Zornia gibbosa Span., Fabaceae

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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Common name(s): [more details]

Chinese: ding gui cao

Habit:  herb

Description:  "Annual, branches prostrate or ascending, glabrous or pubescent. Leaf bifoliolate, petiole 6.0-20 mm long, leaflets 0.7-3.0 cm long, 3.5-10 mm broad, sessile, lanceolate, linear-lanceolate or linear, glandular punctate below, glabrous. Inflorescence a 3-12-flowered raceme, 2.5-10 cm long. Bracts foliaceous, up to 1.3 cm long, black dotted, completely enclosing the flower. Calyx 3.5-4 mm long, 2 upper teeth obtuse, united, ciliate above, 2 lateral teeth smaller, the lowest longest, acute, ciliate. Corolla 7-8 mm long. Fruit 1-6 jointed, joints c. 2.5 mm long, indehiscent, echinate"  (Flora of Pakistan).

Description from Flora of China online.

Habitat/ecology:  In China (native), "sandy places, floodplains; 100-1200 m"  (Flora of China online).

Propagation:  Seed

Native range:  Asia (GRIN).

Presence:

Pacific
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
Guam Guam Island	Guam Island	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (pp. 120-121)
Guam Guam Island	Guam Island	introduced	Raulerson, L. (2006) (p. 39)
Palau Palau (main island group)	Babeldaob Island	introduced cultivated	Space, James C./Lorence, David H./LaRosa, Anne Marie (2009) (p. 6) Voucher: Lorence 9817 (PTBG, BNM, NY, US)
Palau Palau (main island group)	Babeldaob Island		National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (2008) (voucher ID: PTBG 110) Taxon name on voucher: Zornia gibbosa Span.
Papua New Guinea Papua New Guinea (eastern New Guinea Island)	Papua New Guinea (eastern New Guinea Island)	native	ILDIS Co-ordinating Centre (2011)
Philippines Philippine Islands	Philippine Islands	native	ILDIS Co-ordinating Centre (2011)

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	native	ILDIS Co-ordinating Centre (2011)
China China	China (People's Republic of)	native	Zhengyi, Wu/Raven, Peter H./Deyuan, Hong (2011)
China China	Hong Kong	native	Wu, Te-lin (2001) (p. 156)
Japan Japan	Japan (country)	native	U.S. Dept. Agr., Agr. Res. Serv. (2011)
Taiwan Taiwan	Taiwan Island	native	Zhengyi, Wu/Raven, Peter H./Deyuan, Hong (2011)
Thailand Thailand	Thailand (Kingdom of)	native	ILDIS Co-ordinating Centre (2011)
Vietnam Vietnam	Vietnam (Socialist Republic of)	native	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
La Réunion (France) La Réunion Island	La Réunion Island	introduced	ILDIS Co-ordinating Centre (2011)
Mauritius Mautitius Islands (Mauritius and Rodrigues)	Mauritius Island	introduced	ILDIS Co-ordinating Centre (2011)

Additional information:
Additional online information about Zornia gibbosa is available from the Hawaiian Ecosystems at Risk project (HEAR).

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

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

References:

Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce. 1979. A geographical checklist of the Micronesian dicotyledonae. Micronesica 15:1-295.

ILDIS Co-ordinating Centre. 2011. International Legume Database & Information Service. Online searchable database.

National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.). 2008. Voucher specimen #PTBG110(David H. Lorence 9817).

Raulerson, L. 2006. Checklist of Plants of the Mariana Islands. University of Guam Herbarium Contribution 37:1-69. .

Space, James C./Lorence, David H./LaRosa, Anne Marie. 2009. Report to the Republic of Palau: 2008 update on Invasive Plant Species. USDA Forest Service, Hilo, Hawai‘i. 227 pp.

U.S. Dept. Agr., Agr. Res. Serv. 2011. National Genetic Resources Program. Germplasm Resources Information Network (GRIN). Online searchable database.

Wu, Te-lin. 2001. Check List of Hong Kong Plants. Hong Kong Herbarium and the South China Institute of Botany. Agriculture, Fisheries and Conservation Department Bulletin 1 (revised). 384 pp.

Zhengyi, Wu/Raven, Peter H./Deyuan, Hong. 2011. Flora of China (online resource).