Present on Pacific Islands?  no

Primarily a threat at high elevations?  no

Other Latin names:  Buchnera angustifolia D. Don

Common name(s): [more details]

Chinese: xia ye du jiao jin

Habit:  herb

Description:  "Annuals, 15-45 cm tall. Stems erect, subquadrangular, simple, rarely apically branched, hispidulous. Leaves sessile, linear, 1.5-3.5 cm x 1-2 mm, lower ones smaller, scabrous hairy. Spikes 3- to numerous flowered, 3-15 cm; bracts similar to leaves in shape and size. Pedicel less than 2 mm. Bracteoles less that 1 mm, linear. Calyx 9-10 mm, 15-ribbed, hispidulous along ribs; lobes almost as long as tube, subulate. Corolla white, 1.2-1.5 cm; tube ca. 2 cm x 1 mm, apically curved forward; limb 4-6 mm; lower lip lobes 4-6 x 3-4 mm. Capsule obovoid-oblong, ca. 4.5 x 3 mm. Seeds brown, minute"  (Flora of China online).

"Annual herb to 40 cm tall, a root parasite on grasses.  Leaves opposite, becoming spirally arranged upwards, sessile, linear; 1-5 cm - 2-5 mm.  Flowers solitary in leaf axils, forming terminal spikes.  Calyx tubular 4- or 5-lobed, longitudinally ribbed, to 10 mm long.  Corolla tubular, 5-lobed and 2-lipped, white, yellow, pink or red.  Fruit a 2-valved, ovoid capsule c. 4 mm long, containing numerous, tiny oblong, longitudinally-ribbed seeds"  (Waterhouse & Mitchell, 1998; pp. 95-96).

See also Striga asiatica.

Habitat/ecology:  "Grasslands and other open grassy areas" (Waterhouse & Mitchell, 1998; pp. 95-96).

Propagation:  "Large numbers of tiny, dust-like seeds dispersed by wind and water" (Waterhouse & Mitchell, 1998; pp. 95-96).

Native range:  "Probably tropical Asia" (Waterhouse & Mitchell, 1998; pp. 95-96).

Presence:

Pacific Rim
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
China China	China (People's Republic of)	native	Zhengyi, Wu/Raven, Peter H./Deyuan, Hong (2011) Grassy places; low elevations. Hainan (Dongfang Xian).
Indonesia Indonesia	Indonesia (Republic of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2011)
Vietnam Vietnam	Vietnam (Socialist Republic of)	native	U.S. Dept. Agr., Agr. Res. Serv. (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) Cocos (Keeling) Islands	Cocos (Keeling) Islands	introduced	Waterhouse, B. M./Mitchell, A. A. (1998) (p. 96) "A single specimen collected near the Quarantine Station boundary".
Australia (Indian Ocean offshore islands) Cocos (Keeling) Islands	Cocos (Keeling) Islands	introduced invasive	Orchard, Anthony E., ed. (1993) (p. 37)

Comments:  "A serious weed in India. A parasitic weed of rice, sorghum and sugarcane." (Waterhouse & Mitchell, 1998; pp. 95-96).

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

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

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

References:

Orchard, Anthony E., ed. 1993. Flora of Australia. Vol. 50, Oceanic islands 2. Australian Government Publishing Service, Canberra.

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

Waterhouse, B. M./Mitchell, A. A. 1998. Northern Australia Quarantine Strategy: weeds target list. Second edition. Australian Quarantine & Inspection Service, Miscellaneous Publication No. 6/98. 110 pp.

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