Pacific Island Ecosystems at Risk (PIER)

  [   PIER species lists  ]   [   PIER home  ]

Senna siamea
(Lam.) H.S.Irwin & Barneby, Fabaceae
Click on an image for links to BIGGER PICTURES


Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Risk assessment results:  Low risk (based on second screen), score: 5 (Go to the risk assessment)

Other Latin names:  Cassia siamea Lam.

Common name(s): [more details]

Chinese: tie dao mu

English: cassod tree, kassod tree, Siamese senna, Thai cassia, Thailand shower

French: bois perdrix

Spanish: flamboyán amarillo

Tongan: kasia

Habit:  tree

Description:  "Tree, to 30 m tall, spreading, pubescent on the leaf undersides and inflorescence, soon glabrescent.  Leaves (10-) 15-20 (-35) cm long including a terete petiole 25-40 mm long; stipules minute, subulate, persistent; leaflets in (4-) 6-8 (-16) pairs spaced 15-30 mm apart, stipules minute, subulate, persistent; leaflets in (4-) 6-8 (-16) pairs spaced 15-30 mm apart, oblong, 30-50 (-75) mm long, (12-) 20-30 mm wide, increasing medially or distally, emarginate and mucronulate; glands absent, replaced by transverse bars between the leaflets.  Inflorescences of 10-20 (-60) flowers, in upper axils, forming a many-flowered panicle to 40 cm long; peduncles 15-25 mm long; pedicels 15-20 (-35) mm long; bracts subpersistent.  Petals (10-) 15-25 mm long.  Fertile stamens 7 or 10 (with 3 large staminodes); filaments unequal, the lateral abaxial ones 7-12 mm long, the others 2.5-5.5 mm long; anthers subequal, weakly beaked, 5-8 mm long, opening by one U-shaped pore.  Pod flat, 15-25 (-30) cm long, 10-15 mm wide, straight but laterally curved, entire.  Seeds lustrous, with a narrowly spathulate areole"  (Randell and Barlow, 1998; pp. 127-128).

Habitat/ecology:  "Prefers fertile, moist soils.  In northern Queensland, it has invaded forests near towns and is spreading along river banks on the lower Cape York Peninsula, particularly on the Laura River on the lower Cape York Peninsula" (Smith, 2002; p. 23).

Propagation:  Scarified seed (Bodkin, 1986, cited in Csurhes & Edwards, 1998). "Seed pods spread by water. Plants spread intentionally for shelter and ornamentation." (Smith, 2002; p. 23).

Native range:  Southeast Asia, cultivated and naturalized throughout the tropics (GRIN).

Presence:

Pacific
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
Cook Islands
Southern Cook Islands
‘Atiu Island cultivated
McCormack, Gerald (2013)
Cook Islands
Southern Cook Islands
‘Atiu Island introduced
cultivated
Space, James C./Flynn, Tim (2002) (p. 83)
Voucher: Flynn 7095 (PTBG, BISH, US)
Cook Islands
Southern Cook Islands
‘Atiu Island   National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (2002) (voucher ID: PTBG 391)
Taxon name on voucher: Senna siamea
Ecuador (Galápagos Islands)
Isabela Group
Isabela Island introduced
cultivated
Charles Darwin Foundation (2008)
Ecuador (Galápagos Islands)
Isabela Group
Volcán Sierra Negra, Isabela Island introduced
cultivated
Charles Darwin Foundation (2008)
Ecuador (Galápagos Islands)
San Cristóbal Group
San Cristóbal Island introduced
cultivated
Charles Darwin Foundation (2008)
Ecuador (Galápagos Islands)
Santa Cruz Group
Santa Cruz Island introduced
cultivated
Charles Darwin Foundation (2008)
Federated States of Micronesia
Pohnpei Islands
Pohnpei Island introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 99)
Federated States of Micronesia
Pohnpei Islands
Pohnpei Island introduced
cultivated
Herrera, Katherine/Lorence, David H./Flynn, Timothy/Balick, Michael J. (2010) (p. 97)
Federated States of Micronesia
Yap Islands
Yap (Waqab) Island introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 99)
Fiji
Fiji Islands
Viti Levu Island introduced
invasive
cultivated
Smith, Albert C. (1985) (p. 109)
Vouchers cited: DF 309, Damanu 32, Tothill 140, DA 16408, DA 12060, DA 12358
Sometimes established on roadsides and in parks.
Fiji
Fiji Islands
Viti Levu Island   Bishop Museum (Honolulu) (1961) (voucher ID: BISH 32829)
Taxon name on voucher: Senna siamea (Lam.) H.S.Irwin & Barneby
Fiji
Fiji Islands
Viti Levu Island   Bishop Museum (Honolulu) (1969) (voucher ID: BISH 32830)
Taxon name on voucher: Senna siamea (Lam.) H.S.Irwin & Barneby
French Polynesia
Marquesas Islands
Ua Huka (Huahuna, Uahuka) Island introduced
cultivated
Lorence, David H./Wagner, Warren L. (2013)
French Polynesia
Marquesas Islands
Ua Huka (Huahuna, Uahuka) Island introduced
cultivated
Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013)
Voucher cited: L. Dunn 366 (PAP)
Cultivated tree growing along the roadside.
French Polynesia
Marquesas Islands
Ua Huka (Huahuna, Uahuka) Island   National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (2003) (voucher ID: PTBG 40922)
Taxon name on voucher: Senna siamea
French Polynesia
Society Islands
Tahiti Island introduced
invasive
Welsh, S. L. (1998) (p. 162)
Voucher cited: Florence 2519, BRY 25971
French Polynesia
Society Islands
Tahiti Island introduced
invasive
Smith, Nicholas M. (2002) (p. 23)
French Polynesia
Society Islands
Tahiti Island introduced
cultivated
Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013)
Voucher cited: J. Florence 2519 (PAP)
Cultivée
French Polynesia
Society Islands
Tahiti Island   Bishop Museum (Honolulu) (1982) (voucher ID: BISH 491496)
Taxon name on voucher: Cassia siamea
French Polynesia
Society Islands
Tahiti Island   Bishop Museum (Honolulu) (1994) (voucher ID: BISH 639447)
Taxon name on voucher: Senna siamea (Lam.) H.S.Irwin & Barneby
French Polynesia
Austral (Tubuai) Islands
Rurutu Island introduced
cultivated
Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013)
Voucher cited: J. Florence 6197 (PAP)
Cultivée
French Polynesia
Austral (Tubuai) Islands
Rurutu Island   Bishop Museum (Honolulu) (1983) (voucher ID: BISH 554189)
Taxon name on voucher: Cassia siamea
Guam
Guam Island
Guam Island introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 99)
State of Hawaii
Hawaiian Islands
Hawaiian Islands introduced
cultivated
Staples, George W./Herbst, Derral/Imada, Clyde T. (2000) (p. 22)
State of Hawaii
Hawaiian Islands
O‘ahu Island introduced
invasive
cultivated
Lau, Alex/Frohlich, Danielle (2012) (p. 16)
Voucher cited: OED 2009090403 (BISH)
Japan (offshore islands)
Ogasawara (Bonin) Islands
Bonin (Ogasawara) Islands introduced
Kato, Hidetoshi (2007)
New Caledonia
New Caledonia Archipelago
Île Grande Terre introduced
cultivated
MacKee, H. S. (1994) (p. 74)
Vouchers cited: Metzger 42, Baumann 9943, Benoit in MacKee 36601
Niue
Niue
Niue Island introduced
cultivated
Space, James C./Waterhouse, Barbara M./Newfield, Melanie/Bull, Cate (2004) (p. 12)
Palau
Palau (Belau ) (main island group)
Babeldaob Island introduced
cultivated
Space, James C./Waterhouse, Barbara/Miles, Joel E./Tiobech, Joseph/Rengulbai, Kashgar (2003) (pp. 14, 86)
Single tree.
Palau
Palau (Belau ) (main island group)
Koror (Oreor) Island introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 99)
Palau
Palau (Belau ) (main island group)
Koror (Oreor) Island   Bishop Museum (Honolulu) (1967) (voucher ID: BISH 428580)
Taxon name on voucher: Senna siamea (Lam.) H.S.Irwin & Barneby
Palau
Palau (Belau ) (main island group)
Koror (Oreor) Island   Bishop Museum (Honolulu) (1950) (voucher ID: BISH 652580)
Taxon name on voucher: Cassia siamea
Palau
Palau (Belau ) (main island group)
Koror (Oreor) Island   Bishop Museum (Honolulu) (1950) (voucher ID: BISH 652581)
Taxon name on voucher: Cassia siamea
Palau
Palau (Belau ) (main island group)
Koror (Oreor) Island   Beleu National Museum (Republic of Palau. Koror.) (1970) (voucher ID: BNM 436)
Taxon name on voucher: Senna siamea Lam.
Palau
Palau (Belau ) (main island group)
Koror (Oreor) Island   National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (1950) (voucher ID: PTBG 22457)
Taxon name on voucher: Senna siamea
Palau
Palau (Belau ) (main island group)
Ngerkebesang Island   Wagner, W. L./ Herbst, D. R./Weitzman, A./Lorence, D.H. (2013)
Palau
Palau (Belau ) (main island group)
Ngerkebesang Island   Beleu National Museum (Republic of Palau. Koror.) (1967) (voucher ID: BNM 439)
Taxon name on voucher: Senna siamea Lam.
Papua New Guinea
Bismarck Archipelago
Bismarck Archipelago cultivated
Peekel, P. G. [translated by E. E. Henty] (1984) (p. 221)
Ornamental and shade tree.
Papua New Guinea
Papua New Guinea (eastern New Guinea Island)
Papua New Guinea (eastern New Guinea Island) introduced
ILDIS Co-ordinating Centre (2013)
Philippines
Philippine Islands
Philippine Islands introduced
ILDIS Co-ordinating Centre (2013)
Philippines
Philippine Islands
Philippine Islands introduced
cultivated
Merrill, Elmer D. (1923) (p. 264)
A commonly cultivated shade tree in the larger towns.
Solomon Islands
Solomon Islands
Solomon Islands introduced
cultivated
Hancock, I. R./Henderson, C. P. (1988) (p. 56)
United States (other Pacific offshore islands)
Midway Atoll
Sand Island introduced
cultivated
Starr, Forest/Starr, Kim/Loope, Lloyd (2008) (pp. B-13)
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
Csurhes, S./Edwards, R. (1998) (p. 98)
Australia
Australia (continental)
Northern Territory introduced
invasive
cultivated
Australian Biological Resources Study (2013)
Australia
Australia (continental)
Queensland introduced
invasive
Csurhes, S./Edwards, R. (1998) (p. 98)
Australia
Australia (continental)
Queensland introduced
invasive
cultivated
Australian Biological Resources Study (2013)
Cambodia
Cambodia
Cambodia (Kingdom of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Cambodia
Cambodia
Cambodia (Kingdom of) introduced
ILDIS Co-ordinating Centre (2013)
China
China
China (People's Republic of) introduced
cultivated
Zhengyi, Wu/Raven, Peter H./Deyuan, Hong (2013)
"Cultivated in S. China".
China
China
Hong Kong introduced
cultivated
Wu, Te-lin (2001) (p. 136)
As Cassia siamea Lam.
Colombia
Colombia
Colombia (Republic of) introduced
ILDIS Co-ordinating Centre (2013)
El Salvador
El Salvador
El Salvador (Republic of) introduced
ILDIS Co-ordinating Centre (2013)
Indonesia
Indonesia
Indonesia (Republic of) uncertain if native
ILDIS Co-ordinating Centre (2013)
Japan
Ryukyu Islands
Ryukyu Islands introduced
ILDIS Co-ordinating Centre (2013)
Malaysia
Malaysia
Malaysia (country of) uncertain if native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Malaysia
Malaysia
Malaysia (country of) native
ILDIS Co-ordinating Centre (2013)
Mexico
Mexico
Mexico (United Mexican States) introduced
ILDIS Co-ordinating Centre (2013)
Panama
Panama
Panama (Republic of) introduced
ILDIS Co-ordinating Centre (2013)
Singapore
Singapore
Singapore (Republic of) introduced
cultivated
Chong, Kwek Yan/Tan, Hugh T. W./Corlett, Richard T. (2009) (p. 79)
Cultivated only
Taiwan
Taiwan Island
Taiwan Island introduced
ILDIS Co-ordinating Centre (2013)
Thailand
Thailand
Thailand (Kingdom of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Vietnam
Vietnam
Vietnam (Socialist Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Vietnam
Vietnam
Vietnam (Socialist Republic of) introduced
ILDIS Co-ordinating Centre (2013)
Indian Ocean
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
La Réunion (France)
La Réunion Island
La Réunion Island introduced
ILDIS Co-ordinating Centre (2013)
Mauritius
Mautitius Islands (Mauritius and Rodrigues)
Mauritius Island introduced
ILDIS Co-ordinating Centre (2013)
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) introduced
ILDIS Co-ordinating Centre (2013)

Comments:  Invasive on the Cape York Peninsula, Australia (Csurhes, S. and R. Edwards, 1998; p. 98). Weedy on Tahiti (Welsh, 1998; p. 162).


Need more info? Have questions? Comments? Information to contribute? Contact PIER! (pier@hear.org)

  [   PIER species lists  ]   [   PIER home  ]

This page was created on 1 JAN 1999 and was last updated on 2 NOV 2011.