(D. Don) C. J. Saldanha, Orobanchaceae |
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 (2013)
Grassy places; low elevations. Hainan (Dongfang Xian). |
Indonesia
Indonesia |
Indonesia (Republic 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) |
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).
Control: If you know of control methods for Striga angustifolia, please let us know.