Senna occidentalis (L.) Link, Fabaceae

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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Other Latin names:  Cassia occidentalis L.

Common name(s): [more details]

Chamorro: amot tumagá, amot-tumaga, amot-tumaga karabao, karabao, mumutong sapble, mumutun-sable

Chinese: wang jiang nan

Chuukese: afanafan

English: antbush, arsenic bean, coffee senna, coffee weed

Fijian: kau mothe, kavmoce, pini

French: bentamaré, café bâtard, café nège, casse-café, casse-puante, dartrier, gros indigo sauvage, quinquiliba, souveraine

Hawaiian: ‘au‘auko‘i, ‘auko‘i, mikipalaoa, pī hohono

I-Kiribati: te katia

Maori (Cook Islands): parenga

Mokilese: apschoh

Nauruan: tan braua

Palauan: kerieu, korriu, kurriu

Samoan: lau matui, lau matui

Spanish: aya-porotillo, aya-poroto, bataban, bricho, brusca, cafe de bonpland, cafecillo, frijolillo, guanina, hedionda, mezquitillo

Tongan: pi, te‘epulu, tengafefeka

Habit:  shrub

Description:  "The species varies from a semi-woody annual herb in warm temperate areas to a woody annual shrub or sometimes a short-lived perennial shrub in frost-free areas (Haselwood and Motter 1966, Henty and Pritchard 1975, Holm and others 1997). It usually matures at from 0.5 to 2.0 m in height. In Brazil it is reported to reach 5 to 8 m in height (Raintree 2002). Coffee senna produces a hard, woody tap root with relatively few laterals. It usually has a single purplish stem and sparse branching. Young stems are four-angled, becoming rounded with age. The crushed foliage has an unpleasant odor. Compound alternate leaves have four to six pairs of glabrous leaflets and a gland near the base of the petiole. Leaflets are ovate to ovate-lanceolate, pointed at the tip and rounded at the base. Inflorescences are few-flowered axillary racemes with yellow-petaled flowers about 2 cm across. The legumes (pods) are brown, flat, slightly curved and 5 to 12 cm long. They contain 40 or more brown to dark-olive, ovoid seeds about 4 mm long (Henty and Pritchard 1975, Liogier 1988, Long and Lakela 1976, Stevens and others 2001)"  (Wildland shrubs of the United States and its territories).

"Small annual shrub, to 1.2 m tall; stems ribbed, glabrous; petiole with gland at base; leaves to 15 cm long, with usually 4-6 pairs of elliptic or lanceolate acuminate glabrous leaflets each 3-7.5 cm long, the terminal pair largest; flowers in racemes, yellow, nearly 1 cm broad; 3 of the stamens infertile; pod linear, glabrous, 10-15 cm long, about 6 mm wide, the margins somewhat thickened, with about 20-30 flat, ovate, brown seeds each 3 mm long"  (Stone, 1970; p. 311).

Habitat/ecology:  In Guam, "an agricultural pest, a roadside weed, a back-yard volunteer, and a school-field immigrant"  (Stone, 1970; p. 311).  In Hawai‘i, "naturalized primarily in dry, disturbed habitats such as pastures, pineapple or cane fields, 0-1,310 m" (Wagner et al., 1999; pp. 700-701).  In Fiji, "often locally abundant as a weed at elevations from near sea level to 850 m along roadsides, in canefields, coconut plantations, pastures, and open fields, and sometimes on river banks or sand dunes" (Smith, 1985; pp. 112-113).  "Occasional to common in waste places and croplands" (Whistler, 1988; p. 27). In the Galápagos Islands, "in waste places, in meadows, along roadsides, and in crevices in lava flows, from near sea level to 250 m" (Wiggins & Porter, 1971; pp. 603-605). In New Guinea, "sometimes a weed of gardens, but particularly an invader of heavily-grazed pastures. From near sea level to 700 m, sporadic in occurrence" (Henty & Pritchard, 1975; p. 114). In New Caledonia, "commun dans des lieux incultes; parfois cultivé comme plante médicinale" (MacKee, 1994; p. 74).

Propagation:  "Seed is dispersed in mud adhering to vehicles, machinery, animal hooves and fur or as a contaminant of hay, fodder and pasture seed.  Seeds may be eaten by stock with mature seed germinating in the dung." (Smith, 2002; pp. 38-39).

Native range:  Tropical America, now pan-tropical (Stone, 1970; p. 311).  "Possibly native to the Old World" (Wagner et al., 1999; pp. 700-701).  Probably paleotropical (Smith, 1985; pp. 112-113).

Presence:

Pacific
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
American Samoa American Samoa Islands	American Samoa Islands		Waterhouse, D. F. (1997) (p. 65)
American Samoa Manu‘a Islands	Manu‘a Islands	introduced invasive	Whistler, W. A. (1990) (pp. 17-18)
Commonwealth of the Northern Mariana Islands (US) Northern Mariana Islands	Agrigan (Agrihan) Island	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 98)
Commonwealth of the Northern Mariana Islands (US) Northern Mariana Islands	Agrigan (Agrihan) Island	introduced invasive	Fosberg, F. R./Falanruw, M. V. C./Sachet, M.-H. (1975) (p. 26) Voucher cited: Falanruw 2152 (US)
Commonwealth of the Northern Mariana Islands (US) Northern Mariana Islands	Aguijan (Agiguan, Aguihan) Island	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 98)
Commonwealth of the Northern Mariana Islands (US) Northern Mariana Islands	Alamagan Island	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 98)
Commonwealth of the Northern Mariana Islands (US) Northern Mariana Islands	Alamagan Island	introduced invasive	Fosberg, F. R./Falanruw, M. V. C./Sachet, M.-H. (1975) (p. 26) Voucher cited: Anderson 410 (US)
Commonwealth of the Northern Mariana Islands (US) Northern Mariana Islands	Pagan Island	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 98)
Commonwealth of the Northern Mariana Islands (US) Northern Mariana Islands	Pagan Island	introduced invasive	Fosberg, F. R./Falanruw, M. V. C./Sachet, M.-H. (1975) (p. 26) Vouchers cited: Anderson 526 (US, BISH, Fo, NY, L), Fosberg 31352 (US), Moore 348 (US)
Commonwealth of the Northern Mariana Islands (US) Northern Mariana Islands	Pagan Island	introduced	Ohba, T. (1994) (p. 58) Voucher cited: CBM-BS-58989
Commonwealth of the Northern Mariana Islands (US) Northern Mariana Islands	Rota Island	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 98)
Commonwealth of the Northern Mariana Islands (US) Northern Mariana Islands	Saipan Island	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 98)
Commonwealth of the Northern Mariana Islands (US) Northern Mariana Islands	Sarigan Island	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 98)
Commonwealth of the Northern Mariana Islands (US) Northern Mariana Islands	Sarigan Island	introduced invasive	Fosberg, F. R./Falanruw, M. V. C./Sachet, M.-H. (1975) (p. 26) Voucher cited: Evans 2441 (US, BISH, Fo, NY)
Commonwealth of the Northern Mariana Islands (US) Northern Mariana Islands	Tinian Island	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 98)
Cook Islands Southern Cook Islands	Ma‘uke Island		McCormack, Gerald (2011)
Ecuador (Galápagos Islands) Isabela Group	Volcán Alcedo, Isabela Island	native	Charles Darwin Research Station (2005)
Ecuador (Galápagos Islands) Isabela Group	Volcán Cerro Azul, Isabela Island	native	Charles Darwin Research Station (2005)
Ecuador (Galápagos Islands) Isabela Group	Volcán Sierra Negra, Isabela Island	native	Charles Darwin Research Station (2005)
Ecuador (Galápagos Islands) San Cristóbal Group	San Cristóbal Island	native	Charles Darwin Research Station (2005)
Ecuador (Galápagos Islands) Santa Cruz Group	Santa Cruz Island	native	Charles Darwin Research Station (2005)
Ecuador (Galápagos Islands) Santiago Group	Santiago Island	native	Charles Darwin Research Station (2005)
Federated States of Micronesia Chuuk Islands	Dublon (Tonowas) Island	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 98)
Federated States of Micronesia Chuuk Islands	Satawan Atoll	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 98)
Federated States of Micronesia Chuuk Islands	Weno (Moen) Island	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 98)
Federated States of Micronesia Kosrae Island	Kosrae Island	introduced invasive	Josekutty, P. C./Wakuk, E. E./Joseph, M. J. (2002) (p. 63)
Federated States of Micronesia Pohnpei Islands	Mokil Atoll	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 98)
Federated States of Micronesia Pohnpei Islands	Pohnpei Island	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 98)
Federated States of Micronesia Pohnpei Islands	Pohnpei Island	introduced	Glassman, S. F. (1952) (p. 75) Voucher cited: Glassman 2414 (US)
Federated States of Micronesia Pohnpei Islands	Pohnpei Island	introduced invasive	Herrera, Katherine/Lorence, David H./Flynn, Timothy/Balick, Michael J. (2010) (p. 96) Vouchers cited: S.F. Glassman 2414 (BISH), N.L.H. Krauss 1880 (BISH), C.Y.C. Wong 65 (BISH) Naturalized
Federated States of Micronesia Yap Islands	Fais Island	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 98)
Federated States of Micronesia Yap Islands	Fais Island	introduced invasive	Fosberg, F. R./Evans, M. (1969) (p. 7) Voucher cited: Fosberg 46677 (US)
Federated States of Micronesia Yap Islands	Faraulep (Faraulap) Atoll	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 98)
Federated States of Micronesia Yap Islands	Ulithi Atoll	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 98)
Federated States of Micronesia Yap Islands	Woleai Atoll	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 98)
Federated States of Micronesia Yap Islands	Yap (Waqab) Island	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 98)
Fiji Fiji Islands	Lakemba Island	introduced invasive	Smith, Albert C. (1985) (pp. 112-113) Voucher cited: Garnock-Jones 894
Fiji Fiji Islands	Ovalau Island	introduced invasive	Smith, Albert C. (1985) (pp. 112-113) Voucher cited: Tothill 134
Fiji Fiji Islands	Taveuni Island	introduced invasive	Smith, Albert C. (1985) (pp. 112-113) Vouchers cited: Gillespie 4664, DA 8905
Fiji Fiji Islands	Vanua Levu Island	introduced invasive	Smith, Albert C. (1985) (pp. 112-113) Vouchers cited: Greenwood 258C, DA 10778
Fiji Fiji Islands	Viti Levu Island	introduced invasive	Smith, Albert C. (1985) (pp. 112-113) Vouchers cited: Tothill 462, DA 10705, Degener 14979, DA 17329, DA 9760, DA 11346, DA 10737, Greenwood 258A, DA 3369, DA 9951, DA 6089
French Polynesia Marquesas Islands	Eiao Island	introduced invasive	Lorence, David H./Wagner, Warren L. (2008)
French Polynesia Marquesas Islands	Eiao Island	introduced invasive	Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2011) Vouchers cited: J.-C. Thibault 1010 (PAP), J.-C. Thibault 1030 (PAP), J. Florence & M. Teikiteetini 9329 (PAP) Adventice
French Polynesia Marquesas Islands	Eiao Island		National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (1988) (voucher ID: PTBG 9227) Taxon name on voucher: Senna occidentalis
French Polynesia Marquesas Islands	Eiao Island		National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (1960) (voucher ID: PTBG 13219) Taxon name on voucher: Senna occidentalis
French Polynesia Marquesas Islands	Fatu Hiva Island	introduced invasive	Lorence, David H./Wagner, Warren L. (2008)
French Polynesia Marquesas Islands	Fatu Hiva Island	introduced invasive	Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2011) Adventice
French Polynesia Marquesas Islands	Fatu Hiva Island		National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (1988) (voucher ID: PTBG 8779) Taxon name on voucher: Senna occidentalis
French Polynesia Marquesas Islands	Fatu Hiva Island		National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (2003) (voucher ID: PTBG 39709) Taxon name on voucher: Senna occidentalis
French Polynesia Marquesas Islands	Hatuta'a (Hatutu) Island	introduced invasive	Lorence, David H./Wagner, Warren L. (2008)
French Polynesia Marquesas Islands	Hatuta'a (Hatutu) Island	introduced invasive	Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2011) Vouchers cited: J.-C. Thibault 1098 (PAP), J. Florence & M. Teikiteetini 9302 (PAP) Adventice
French Polynesia Marquesas Islands	Hiva Oa Island	introduced invasive	Lorence, David H./Wagner, Warren L. (2008)
French Polynesia Marquesas Islands	Hiva Oa Island	introduced invasive	Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2011) Adventice
French Polynesia Marquesas Islands	Mohotani (Mohotane, Mohotane) Island	introduced invasive	Lorence, David H./Wagner, Warren L. (2008)
French Polynesia Marquesas Islands	Mohotani (Mohotane, Mohotane) Island	introduced invasive	Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2011) Adventice
French Polynesia Marquesas Islands	Nuku Hiva (Nukahiva) Island	introduced invasive	Lorence, David H./Wagner, Warren L. (2008)
French Polynesia Marquesas Islands	Nuku Hiva (Nukahiva) Island	introduced invasive	Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2011) Vouchers cited: J. Florence 6712 (PAP), J. Florence 8517 (PAP) Adventice
French Polynesia Marquesas Islands	Tahuata (Tuhuata) Island	introduced invasive	Lorence, David H./Wagner, Warren L. (2008)
French Polynesia Marquesas Islands	Tahuata (Tuhuata) Island	introduced invasive	Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2011) Adventice
French Polynesia Marquesas Islands	Ua Huka (Huahuna, Uahuka) Island	introduced invasive	Lorence, David H./Wagner, Warren L. (2008)
French Polynesia Marquesas Islands	Ua Huka (Huahuna, Uahuka) Island	introduced invasive	Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2011) Adventice
French Polynesia Marquesas Islands	Ua Pou (Huapu, Uapou, Uapu) Island	introduced invasive	Lorence, David H./Wagner, Warren L. (2008)
French Polynesia Marquesas Islands	Ua Pou (Huapu, Uapou, Uapu) Island	introduced invasive	Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2011) Voucher cited: J. Florence 4430 (PAP) Adventice
French Polynesia Society Islands	Huahine Island	introduced	Welsh, S. L. (1998) (p. 162) Voucher cited: Grant 5338
French Polynesia Society Islands	Huahine Island	introduced invasive	Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2011) Voucher cited: J. Florence & R. Tahuaitu 11753 (PAP) Adventice
French Polynesia Society Islands	Raiatea (Havai) Island	introduced	Welsh, S. L. (1998) (p. 162) Vouchers cited: Moore 7, Moore 688, BRY 26400, BRY 26627
French Polynesia Society Islands	Tahiti Island	introduced	Welsh, S. L. (1998) (p. 162) Voucher cited: Florence 2561
French Polynesia Society Islands	Tahiti Island	introduced invasive	Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2011) Voucher cited: J. Florence 2561 (PAP) Adventice
French Polynesia Tuamotu Archipelago	Makatea (Ma‘atea) Island	introduced invasive	Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2011) Voucher cited: J. Florence 3012 (PAP) Adventice
French Polynesia Tuamotu Archipelago	Niau Atoll	introduced invasive	Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2011) Voucher cited: J. Florence 10101 (PAP) Adventice
French Polynesia Tuamotu Archipelago	Takapoto Atoll	introduced invasive	Sachet, M-H. (1983) (p. 23) Voucher cited: Sachet 2055 (US)
French Polynesia Austral (Tubuai) Islands	Raivavae (Raevavae) Island	introduced invasive	Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2011) Voucher cited: J. Florence & W.R. Sykes 11317 (PAP) Adventice
French Polynesia Austral (Tubuai) Islands	Rimatara (Rimitara) Island	introduced invasive	Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2011) Adventice
Guam Guam Island	Guam Island	introduced invasive	Stone, Benjamin C. (1970) (p. 311) Vouchers cited: Stone 4158 (GUAM), Stone 4500 (GUAM), Stone 4734 (GUAM), Stone 4869 (GUAM)
Guam Guam Island	Guam Island	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 98)
State of Hawaii Hawaiian Islands	Hawai‘i (Big) Island	introduced invasive	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (pp. 700-701)
State of Hawaii Hawaiian Islands	Kaua‘i Island	introduced invasive	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (pp. 700-701)
State of Hawaii Hawaiian Islands	Maui Island	introduced invasive	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (pp. 700-701)
State of Hawaii Hawaiian Islands	Maui Island	introduced invasive	Oppenheimer, Hank L./Meidell, J. Scott/Bartlett, R. T. (1999) (p. 8) West Maui. Vouchers cited: Oppenheimer H79805 (BISH), Oppenheimer H89803 (BISH)
State of Hawaii Hawaiian Islands	Moloka‘i Island	introduced invasive	Oppenheimer, Hank L. (2003) (p. 14) Voucher cited: Oppenheimer H110130 (BISH, PTBG)
State of Hawaii Hawaiian Islands	Ni‘ihau Island	introduced invasive	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (pp. 700-701)
State of Hawaii Hawaiian Islands	O‘ahu Island	introduced invasive	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (pp. 700-701) Voucher cited: Mann & Brigham 756 (BISH)
Japan (offshore islands) Bonin (Ogasawara) Islands	Bonin (Ogasawara) Islands	introduced	Kato, Hidetoshi (2007)
Kiribati Line Islands	Tabuaeran (Fanning) Atoll	introduced invasive	Wester, Lyndon (1985) (p. 24)
Kiribati Line Islands	Tabuaeran (Fanning) Atoll	introduced invasive	Christophersen, Erling (1927) (p. 42) A weed in open places among coconut trees.
Kiribati Tungaru (Gilbert) Islands	Butaritari Atoll	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 98)
Kiribati Tungaru (Gilbert) Islands	Butaritari Atoll	introduced invasive	Space, James C./Imada, Clyde T. (2004) (p. 78)
Kiribati Tungaru (Gilbert) Islands	Maiana Atoll	introduced invasive	Space, James C./Imada, Clyde T. (2004) (p. 79) Voucher: Imada 2003-114 (BISH 697725)
Kiribati Tungaru (Gilbert) Islands	Tarawa Atoll	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 98)
Kiribati Tungaru (Gilbert) Islands	Tarawa Atoll	introduced invasive	Space, James C./Imada, Clyde T. (2004) (p. 75) Voucher: Imada 2003-52 (BISH 697667)
Marshall Islands Ralik Chain	Jaluit (Jãlwõj) Atoll	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 98)
Marshall Islands Ralik Chain	Kwajalein (Kuwajleen) Atoll	introduced invasive	Whistler, W. A./Steele, O. (1999) (p. 55) Vouchers cited: Herbst 8947, Whistler 11174
Marshall Islands Ralik Chain	Ujelang Atoll	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 98)
Marshall Islands Ralik Chain	Ujelang Atoll	introduced invasive cultivated	Fosberg, F. R. (1955) (p. 11) Voucher cited: Fosberg 34184 (US) Persisting after cultivation.
Marshall Islands Ratak Chain	Majuro (Mãjro) Atoll	introduced invasive	Vander Velde, Nancy (2003) (p. 80)
Marshall Islands Ratak Chain	Maloelap Atoll		Imada, Clyde (2006)
Marshall Islands Ratak Chain	Wotje (Wõjjã) Atoll	introduced	Vander Velde, Nancy/Vander Velde, Brian (2009) (p. 2) Voucher cited: Vander Velde 0515200901
Nauru Nauru Island	Nauru Island	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 98)
Nauru Nauru Island	Nauru Island	introduced invasive	Thaman, R. R./Fosberg, F. R./Manner, H. I./Hassall, D. C. (1994) (pp. 141-142) Vouchers cited: Fosberg 58529 (US), Scully 128N (US), Thaman & Manner 13 (SUVA), Swarbrick 9547 (BRIU)
New Caledonia Îles Loyauté (Loyalte Islands)	Îles Loyauté (Loyalty Islands)	introduced invasive	Tassin, Jacques (2005)
New Caledonia Îles Loyauté (Loyalte Islands)	Île Tiga	introduced invasive	MacKee, H. S. (1994) (pp. 73-74) Voucher cited: MacKee 45849 spontané
New Caledonia New Caledonia	New Caledonia Islands		Swarbrick, John T. (1997) (p. 89)
New Caledonia New Caledonia Archipelago	Île Grande Terre	introduced invasive	Tassin, Jacques (2005)
New Caledonia New Caledonia Archipelago	Île Grande Terre	introduced invasive cultivated	MacKee, H. S. (1994) (pp. 73-74) Vouchers cited: Pancher s.n., Balansa 303, Däniker 23a (Z), MacKee 25508, MacKee 28513, MacKee 36507 spontané; "naturalisé à Nouméa"
Niue Niue	Niue Island	introduced invasive	Sykes, W. R. (1970) (p. 56) Not common. Voucher cited: CHR 169774
Niue Niue	Niue Island	introduced invasive	Whistler, W. A. (1988) (p. 27)
Niue Niue	Niue Island	introduced invasive	Space, James C./Flynn, Tim (2000) (p. Voucher) Voucher: Flynn 6693 (PTBG, US, NIUE)
Niue Niue	Niue Island	introduced invasive cultivated	Whistler, W. A./Atherton, J. (1997) (p. 36)
Niue Niue	Niue Island	introduced invasive	Yuncker, T. G. (1943) (p. 60) Infrequent. Voucher cited: Yuncker 9728 (BISH) "Infrequent on rocky ckiffs near the sea".
Niue Niue	Niue Island	introduced invasive	Space, James C./Waterhouse, Barbara M./Newfield, Melanie/Bull, Cate (2004) (p. 46)
Niue Niue	Niue Island		National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (2000) (voucher ID: PTBG 30193) Taxon name on voucher: Senna occidentalis (L.) Link
Palau Palau (main island group)	Angaur Island	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 98)
Palau Palau (main island group)	Babeldaob Island	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 98)
Palau Palau (main island group)	Babeldaob Island	introduced invasive	Space, James C./Waterhouse, Barbara/Miles, Joel E./Tiobech, Joseph/Rengulbai, Kashgar (2003) (p. 102)
Palau Palau (main island group)	Babeldaob Island	introduced cultivated	Space, James C./Lorence, David H./LaRosa, Anne Marie (2009) (p. 21)
Palau Palau (main island group)	Koror Island	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 98)
Palau Palau (main island group)	Koror Island		Beleu National Museum (Republic of Palau. Koror.) (1970) (voucher ID: BNM 434) Taxon name on voucher: Senna occidentalis L.
Palau Palau (main island group)	Malakal Island	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 98)
Palau Palau (main island group)	Malakal Island		Beleu National Museum (Republic of Palau. Koror.) (1967) (voucher ID: BNM 433) Taxon name on voucher: Senna occidentalis L.
Papua New Guinea Bismarck Archipelago	Bismarck Archipelago	introduced	ILDIS Co-ordinating Centre (2011)
Papua New Guinea Bismarck Archipelago	Bismarck Archipelago		Peekel, P. G. [translated by E. E. Henty] (1984) (p. 218) Common, widespread.
Papua New Guinea Papua New Guinea (eastern New Guinea Island)	Papua New Guinea (eastern New Guinea Island)	introduced invasive	Henty, E. E./Pritchard, G. H. (1975) (p. 114) From near sea level to 700 m, sporadic in occurrence.
Papua New Guinea Papua New Guinea (eastern New Guinea Island)	Papua New Guinea (eastern New Guinea Island)		Waterhouse, D. F. (1997) (p. 65)
Philippines Philippine Islands	Philippine Islands		Holm, Leroy/Pancho, Juan V./Herberger, James P./Plucknett, Donald L. (1979) (p. 69)
Philippines Philippine Islands	Philippine Islands	introduced invasive	Merrill, Elmer D. (1923) (p. 264) At low and medium altitudes, a weed in waste places in and about towns.
Pitcairn Islands Pitcairn Islands	Pitcairn Island	introduced invasive	Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2011) Adventice
Samoa Western Samoa Islands	Western Samoa Islands		Whistler, W. A. (1988) (p. 27)
Solomon Islands Solomon Islands	Solomon Islands	introduced	ILDIS Co-ordinating Centre (2011)
Solomon Islands Solomon Islands	Solomon Islands	native	Hancock, I. R./Henderson, C. P. (1988) (p. 56)
Tonga Ha‘apai Group	Ha‘apai Islands		Whistler, W. A. (1992) (p. 32) Voucher cited: Soakai 299
Tonga Ha‘apai Group	Lifuka Island	introduced invasive	Yuncker, T. G. (1959) (p. 135) Voucher cited: Yuncker 15708
Tonga Tongatapu Group	‘Eua Island	introduced invasive	Yuncker, T. G. (1959) (p. 135) Cited: Lister.
Tonga Tongatapu Group	Tongatapu Island		Whistler, W. A. (1992) (p. 32) Vouchers cited: Lawrence 63, Ilolahia 110, Soakai 464, Soakai 488
Tuvalu Tuvalu (Ellis) Islands	Tuvalu Islands		Swarbrick, John T. (1997) (p. 89)
Vanuatu New Hebrides Islands	Vanuatu (Republic of)		Swarbrick, John T. (1997) (p. 89)
Wallis and Futuna Wallis and Futuna (Horne) Islands	Wallis (‘Uvea) Island	introduced invasive	Meyer, Jean-Yves (2007) (p. 35)
Wallis and Futuna Wallis and Futuna (Horne) Islands	Wallis and Futuna Islands		Whistler, W. A. (1988) (p. 27)

Pacific Rim
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
Australia Australia (continental)	Northern Territory	introduced invasive	Smith, Nicholas M. (2002) (pp. 38-39)
Australia Australia (continental)	Northern Territory	introduced invasive	Australian Biological Resources Study (2011)
Australia Australia (continental)	Queensland	introduced invasive	Smith, Nicholas M. (2002) (pp. 38-39)
Australia Australia (continental)	Queensland	introduced invasive	Australian Biological Resources Study (2011)
Cambodia Cambodia	Cambodia (Kingdom of)	introduced	ILDIS Co-ordinating Centre (2011)
China China	China (People's Republic of)	introduced invasive	Zhengyi, Wu/Raven, Peter H./Deyuan, Hong (2011) "Among shrubs on riverbanks, wilderness tracts, hills, sparse forests, wastelands near villages. S. regions of China".
China China	Hong Kong	native	Wu, Te-lin (2001) (p. 136) As Cassia occidentalis L.
Colombia Colombia	Colombia (Republic of)	native	ILDIS Co-ordinating Centre (2011)
Costa Rica Costa Rica	Costa Rica (Republic of)		Holm, Leroy/Pancho, Juan V./Herberger, James P./Plucknett, Donald L. (1979) (p. 69)
Ecuador (Mainland) Ecuador	Ecuador (Republic of) (continental)		Holm, Leroy/Doll, Jerry/Holm, Eric/Pancho, Jaun/Herberger, James (1997) (p. 162)
El Salvador El Salvador	El Salvador (Republic of)	native	ILDIS Co-ordinating Centre (2011)
Honduras Honduras	Honduras (Republic of)		Holm, Leroy/Doll, Jerry/Holm, Eric/Pancho, Jaun/Herberger, James (1997) (p. 168)
Indonesia Indonesia	Indonesia (Republic of)	introduced	ILDIS Co-ordinating Centre (2011)
Indonesia Indonesia	West Papua Province (Indonesia) (western New Guinea Island) (formerly Irian Jaya)	introduced	ILDIS Co-ordinating Centre (2011)
Japan Japan	Japan (country)		Holm, Leroy/Doll, Jerry/Holm, Eric/Pancho, Jaun/Herberger, James (1997) (p. 162)
Japan Japan	Japan (country)	introduced	Mito, Toshikazu/Uesugi, Tetsuro (2004) (p. 184)
Japan Ryukyu Islands	Ryukyu Islands	introduced	ILDIS Co-ordinating Centre (2011)
South Korea South Korea	South Korea (Republic of)		Holm, Leroy/Doll, Jerry/Holm, Eric/Pancho, Jaun/Herberger, James (1997) (p. 168)
Malaysia Malaysia	Malaysia (country of)	introduced	ILDIS Co-ordinating Centre (2011)
Mexico Mexico	Mexico (United Mexican States)	native	ILDIS Co-ordinating Centre (2011)
Nicaragua Nicaragua	Nicaragua (Republic of)		Holm, Leroy/Pancho, Juan V./Herberger, James P./Plucknett, Donald L. (1979) (p. 69)
Perú Perú	Perú (Republic of)	native	ILDIS Co-ordinating Centre (2011)
Singapore Singapore	Singapore (Republic of)	introduced invasive	Chong, Kwek Yan/Tan, Hugh T. W./Corlett, Richard T. (2009) (p. 79) Naturalised
Taiwan Taiwan	Taiwan Island	introduced	ILDIS Co-ordinating Centre (2011)
Thailand Thailand	Thailand (Kingdom of)	introduced	ILDIS Co-ordinating Centre (2011)
Vietnam Vietnam	Vietnam (Socialist Republic of)	introduced	ILDIS Co-ordinating Centre (2011)

Indian Ocean
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
Australia (Indian Ocean offshore islands) Christmas Island Group	Christmas Island	introduced invasive	Swarbrick, J. T. (1997) (p. 127)
Australia (Indian Ocean offshore islands) Cocos (Keeling) Islands	Cocos (Keeling) Islands	introduced invasive	Orchard, Anthony E., ed. (1993) (p. 37)
British Indian Ocean Territory Chagos Archipelago	Chagos Archipelago	uncertain if native	ILDIS Co-ordinating Centre (2011)
British Indian Ocean Territory Chagos Archipelago	Diego Garcia Island	introduced	Stoddart, D. R./Taylor, J. D., eds. (1971) (p. 151) Vouchers cited: Stoddart 844 (K, US), Soddart 824 (K), Rhyne 749 (US)
British Indian Ocean Territory Chagos Archipelago	Diego Garcia Island	introduced invasive	Whistler, W. Arthur (1996) (p. 28)
British Indian Ocean Territory Chagos Archipelago	Diego Garcia Island		National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (1995) (voucher ID: PTBG 37927) Taxon name on voucher: Senna occidentalis (L.) Link
Comoros Comoro Islands	Comoro Islands	uncertain if native	ILDIS Co-ordinating Centre (2011)
La Réunion (France) La Réunion Island	La Réunion Island	introduced cultivated	Lavergne, Christophe (2006) "Cultivé/naturalisé"
Maldives Maldive Islands	Addu Atoll		Spicer, R. A./Newberry, D. MacC. (1979) (p. 11)
Maldives Maldive Islands	Maldive Islands	uncertain if native	ILDIS Co-ordinating Centre (2011)
Maldives Maldive Islands	Malè Atoll		Fosberg, F. R. (1957) (p. 20)
Mauritius Mautitius Islands (Mauritius and Rodrigues)	Mauritius Island	introduced	ILDIS Co-ordinating Centre (2011)
Mauritius Mautitius Islands (Mauritius and Rodrigues)	Rodrigues Island	introduced	ILDIS Co-ordinating Centre (2011)
French Territory of Mayotte Mayotte Islands	Mayotte Island	introduced invasive	Comité français de l'Union Internationale pour la Conservation de la Nature en France (2010)
Seychelles Seychelles Islands	Agalega Island	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Stoddart, D. R. (1983) (p. 123)
Seychelles Seychelles Islands	Alphonse Island		Robertson, I. A. D./Robertson, S. A./Fosberg, F. R. (1983) (p. 181) Voucher cited: Robertson 2828 (K)
Seychelles Seychelles Islands	Coetivy Island		Robertson, S. A./Fosberg, F. R. (1983) (p. 150) Voucher cited: Robertson 3144 (K)
Seychelles Seychelles Islands	Cousin Island	introduced invasive	Fosberg, F. R. (1983) (p. 26) Voucher cited: Fosberg 52069 (US)
Seychelles Seychelles Islands	Frégate Island		Robertson, S. A./Todd, D. M. (1983) (p. 51) Voucher cited: Robertson 2692
Seychelles Seychelles Islands	Groupe d'Aldabra	uncertain if native	ILDIS Co-ordinating Centre (2011)
Seychelles Seychelles Islands	Marie-Louise Island		Wilson, J. R. (1983) (p. 192)
Seychelles Seychelles Islands	Platte Island		Robertson, S. A./Fosberg, F. R. (1983) (p. 161) Voucher cited: Robertson 3008 (K)
Seychelles Seychelles Islands	Poivre Island		Robertson, S. A./Fosberg, F. R. (1983) (p. 170) Voucher cited: Robertson 2366 (K)
Seychelles Seychelles Islands	Seychelles Islands	introduced	ILDIS Co-ordinating Centre (2011)

Also reported from
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
United States (continental except west coast) United States (other states)	United States (other states)	uncertain if native	ILDIS Co-ordinating Centre (2011)

Comments:  The seeds may be used as a substitute for coffee.

A declared noxious weed in the Northern Territory, Australia (Smith, 2002; pp. 38-39).

Control: 

Chemical:  "The species can be controlled with broadleaf herbicides (Henty and Prichard 1975)"  (Wildland shrubs of the United States and its territories).

Additional information:
Fact sheet from "Wildland shrubs of the United States and its territories: thamnic descriptions" (PDF format).

Additional online information about Senna occidentalis is available from the Hawaiian Ecosystems at Risk project (HEAR).

Information about Senna occidentalis as a weed (worldwide references) may be available from the Global Compendium of Weeds (GCW).

Taxonomic information about Senna occidentalis may be available from the Germplasm Resources Information Network (GRIN).

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