Pacific Island Ecosystems at Risk (PIER)

  [   PIER species lists  ]   [   PIER home  ]

Sporobolus diander
(Retz.) P.Beauv., Poaceae
Click on an image for links to BIGGER PICTURES


Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Other Latin names:  Sporobolus diandrus (Retz.) P. Beauv.; Sporobolus indicus (L.) R. Br. var. flaccidus (Roem. & Schult.) Veldkamp

Common name(s): [more details]

Chinese: shuang rui shu wei su

English: Indian dropseed, lesser dropseed, tussock dropseed, two-anthered smutgrass

Habit:  grass

Description:  "Perennials; culms tufted, erect from a geniculate base, slender, 3-7 dm tall, glabrous.  Sheaths glabrous, compressed, sometimes sparsely pilose at throat; ligule membranous, shallow, margins fimbriate; blades linear, flat, involute when dry, 1-2 (-4) mm wide, glabrous or with a few hairs on the upper surface.  Panicles narrow, somewhat diffuse, up to 30 cm long, the branches ascending to spreading, 2-3 cm long near base; spikelets numerous, clustered along the branches, slightly compressed, 1.3-1.5 mm long, glabrous, short-pedicellate; glumes unequal, first glume ca. 0.3 mm long, apex truncate, second glume ovate, ca. 0.5 mm long, apex obtuse; lemma grayish green, ovate, ca. 1.4 mm long, 1-nerved, apex acute; palea ovate, ca. 1.3 mm long, grayish green, nerveless.  Fruit green to brown, cuboid-oblong, 0.6-0.8 mm long" (Wagner et al., 1999; pp. 1596-1597, 1912).

Description from GrassBase.

Habitat/ecology:  In Hawai‘i, "naturalized in disturbed sites, 0-460 m" (Wagner et al., 1999; pp. 1596-1597). In Fiji, "it occurs between sea level and about 150 m in waste places and paddocks and along roadsides" (Smith, 1979; p. 308).

Propagation:  Seed

Native range:  India (Wagner et al., 1999; pp. 1596-1597).

Presence:

Pacific
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands
Anatahan Island introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1987) (p. 60)
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands
Anatahan Island introduced
Fosberg, F. R./Falanruw, M. V. C./Sachet, M.-H. (1975) (p. 14)
Voucher cited: Falanruw 1644 (US)
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands
Pagan Island introduced
Raulerson, L. (2006) (p. 12)
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands
Rota Island introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1987) (p. 60)
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands
Saipan Island introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1987) (p. 60)
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands
Tinian Island introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1987) (p. 60)
Federated States of Micronesia
Chuuk Islands
Puluwat (Pwonowót) Atoll introduced
invasive
Manner, H. I./Mallon, E. (1989) (p. 36)
Voucher cited: Manner & Mallon 163 (GUAM)
Federated States of Micronesia
Chuuk Islands
Weno (Moen) Island introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1987) (p. 60)
Federated States of Micronesia
Kosrae Island
Kosrae Island introduced
invasive
Lorence, David H./Flynn, Timothy (2010) (p. 10)
Naturalized
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
Pohnpei Island introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1987) (p. 60)
Federated States of Micronesia
Pohnpei Islands
Pohnpei Island introduced
invasive
Herrera, Katherine/Lorence, David H./Flynn, Timothy/Balick, Michael J. (2010) (p. 61)
Naturalized
Federated States of Micronesia
Pohnpei Islands
Pohnpei Island   National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (1997) (voucher ID: PTBG 24406)
Taxon name on voucher: Sporobolus diandrus (Retz.) P. Beauv.
Fiji
Fiji Islands
Koro Island introduced
invasive
Smith, Albert C. (1979) (pp. 307-308)
Fiji
Fiji Islands
Mango Island introduced
invasive
Smith, Albert C. (1979) (pp. 307-308)
Fiji
Fiji Islands
Matuku Island introduced
invasive
Smith, Albert C. (1979) (pp. 307-308)
Fiji
Fiji Islands
Ngau Island introduced
invasive
Smith, Albert C. (1979) (pp. 307-308)
Fiji
Fiji Islands
Vanua Mbalavu Island introduced
invasive
Smith, Albert C. (1979) (pp. 307-308)
Fiji
Fiji Islands
Viti Levu Island introduced
invasive
Smith, Albert C. (1979) (p. 308)
Vouchers cited: Greenwood s. n., Gillespie s. n., DA 8058, DA 9118, DA 9123, DA 17343
French Polynesia
Marquesas Islands
Hiva Oa Island introduced
invasive
Lorence, David H./Wagner, Warren L. (2013)
Voucher cited: B.G. Decker 1258 (US)
French Polynesia
Marquesas Islands
Ua Huka (Huahuna, Uahuka) Island introduced
invasive
Lorence, David H./Wagner, Warren L. (2013)
Voucher cited: K. R. Wood 10786 (BISH, P, PAP, PTBG, US)
French Polynesia
Society Islands
Raiatea (Havai) Island introduced
invasive
Welsh, S. L. (1998) (p. 346)
Vouchers cited: BRY 25734, Florence 3696
French Polynesia
Society Islands
Taha‘a Island introduced
invasive
Welsh, S. L. (1998) (p. 346)
Voucher cited: BRY 26391
French Polynesia
Society Islands
Tahiti Island introduced
invasive
Welsh, S. L. (1998) (p. 346)
Vouchers cited: Fosberg 61264, Florence 2515, Florence 2518, Florence 10602
French Polynesia
Society Islands
Tahiti Island   National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (1981) (voucher ID: PTBG 38244)
Taxon name on voucher: Sporobolus diander (Retz.) P. Beauv.
Guam
Guam Island
Guam Island introduced
invasive
Stone, Benjamin C. (1970) (p. 193)
Guam
Guam Island
Guam Island introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1987) (p. 60)
State of Hawaii
Hawaiian Islands
Hawai‘i (Big) Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 1597)
State of Hawaii
Hawaiian Islands
Kaua‘i Island introduced
invasive
Lorence, David H./Flynn, Tim (1997) (p. 11)
Voucher cited: Flynn 5833 (PTBG)
State of Hawaii
Hawaiian Islands
Lāna‘i Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 1597)
State of Hawaii
Hawaiian Islands
O‘ahu Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 1597)
Japan (offshore islands)
Ogasawara (Bonin) Islands
Bonin (Ogasawara) Islands   Kato, Hidetoshi (2007)
Kiribati
Tungaru (Gilbert) Islands
Tarawa Atoll introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1987) (p. 60)
Nauru
Nauru Island
Nauru Island introduced
invasive
Thaman, R. R./Fosberg, F. R./Manner, H. I./Hassall, D. C. (1994) (p. 73)
Voucher cited: Hassall 154 (SUVA)
Niue
Niue
Niue Island introduced
invasive
Whistler, W. A./Atherton, J. (1997) (p. 56)
Palau
Palau (Belau ) (main island group)
Babeldaob Island introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1987) (p. 60)
Palau
Palau (Belau ) (main island group)
Koror (Oreor) Island introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1987) (p. 60)
Palau
Palau (Belau ) (main island group)
Koror (Oreor) Island   Beleu National Museum (Republic of Palau. Koror.) (1976) (voucher ID: BNM 10037)
Taxon name on voucher: Sporobolus diander Beauv.
Palau
Rock Islands (Chelbacheb)
Ngerchong Island introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1987) (p. 60)
Palau
Rock Islands (Chelbacheb)
Ngerchong Island introduced
invasive
Space, James C./Lorence, David H./LaRosa, Anne Marie (2009) (p. 61)
Papua New Guinea
Papua New Guinea (eastern New Guinea Island)
Papua New Guinea (eastern New Guinea Island) native
Henty, E. E. (1969) (p. 180)
Throughout New Guinea, mainly as a weed of roadsides, waste places and abandoned cultivation, from low altitudes to over 6,000 ft.
Papua New Guinea
Papua New Guinea (eastern New Guinea Island)
Papua New Guinea (eastern New Guinea Island) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Philippines
Philippine Islands
Philippine Islands native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Solomon Islands
Solomon Islands
Solomon Islands   Swarbrick, John T. (1997) (p. 97)
Solomon Islands
Solomon Islands
Solomon Islands native
Hancock, I. R./Henderson, C. P. (1988) (p. 110)
Tonga
Tongatapu Group
Tongatapu Island   Whistler, W. A. (1992) (p. 101)
Vouchers cited: Ilolahia 77, Soakai 324
Vanuatu
New Hebrides Islands
Vanuatu (Republic of)   Swarbrick, John T. (1997) (p. 97)
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)
Australia (continental)   Hafliger, Ernst/Scholz, Hildemar (1980) (p. 126)
Cambodia
Cambodia
Cambodia (Kingdom of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
China
China
China (People's Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Indonesia
Indonesia
Indonesia (Republic of)   Waterhouse, D. F. (1993) (p. 69)
Indonesia
Indonesia
Indonesia (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Japan
Ryukyu Islands
Ryukyu Islands native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Malaysia
Malaysia
Malaysia (country of)   Waterhouse, D. F. (1993) (p. 69)
Malaysia
Malaysia
Malaysia (country of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Singapore
Singapore
Singapore (Republic of) native
Chong, Kwek Yan/Tan, Hugh T. W./Corlett, Richard T. (2009) (p. 81)
As Sporobolus indicus (L.) R. Br. var. flaccidus (Roem. & Schult.) Veldk., common
Taiwan
Taiwan Island
Taiwan Island native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Thailand
Thailand
Thailand (Kingdom of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Vietnam
Vietnam
Vietnam (Socialist Republic of)   Waterhouse, D. F. (1993) (p. 69)
Vietnam
Vietnam
Vietnam (Socialist Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Indian Ocean
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
British Indian Ocean Territory
Chagos Archipelago
Diego Garcia Island introduced
invasive
Whistler, W. Arthur (1996) (p. 25)
Mauritius
Mautitius Islands (Mauritius and Rodrigues)
Mauritius Island native
U.S. Dept. Agr., Agr. Res. Serv. (2013)


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

  [   PIER species lists  ]   [   PIER home  ]

This page was created on 16 JUN 2005 and was last updated on 30 NOV 2008.