Present on Pacific Islands?  no

Primarily a threat at high elevations?  no

Common name(s): [more details]

Chinese: jian xu nang ying cao

Habit:  grass

Description:  "Erect, perennial grass 50-100 cm tall, growing in shallow swamps or creeping and floating in deep water. Stems hollow, with spongy-swollen purplish rhizomes. Leaf sheaths swollen, 5-6 cm long; hairless, striate and yellow or purple; ligule 1.5-3 mm long, finely hairy behind; leaf blade flat, linear, 13-40 cm x 7-20 mm, blue-green and glabrous. Inflorescence an erect, slender pseudo-spike, 10-40 cm long, with short branches. Spikelets 1-flowered, 3.25-3.75 mm long, two or more together on pedicels 1-4 mm long. Old spikelets falling early giving an interrupted appearance. Caryopsis elliptic, compressed, 2 mm long. Can be confused with Hymenachne acutigluma from which it can be distinguished by its hollow stem, short inflorescence and long upper glume. The two species often occur together" (Waterhouse and Mitchell, 1998; pp. 81-82).

Description from GrassBase.

Habitat/ecology:  In China (native), "swamps, shallow water, rice fields" (Flora of China online).  "Swamps and stagnant water, occurring in dense swards. A weed of drainage channels and dams." (Waterhouse and Mitchell, 1998; pp. 81-82).

Propagation:  "Seed and rhizome fragments dispersed by water" (Waterhouse and Mitchell, 1998; pp. 81-82).

Native range:  "Tropical Asia and possibly Africa" (Waterhouse and Mitchell, 1998; pp. 81-82).

Presence:

Pacific Rim
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
Cambodia Cambodia	Cambodia (Kingdom of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2013)
China China	China (People's Republic of)	native	Zhengyi, Wu/Raven, Peter H./Deyuan, Hong (2013) SW Yunnan
Indonesia Indonesia	Indonesia (Republic of)		Waterhouse, B. M./Mitchell, A. A. (1998) (pp. 81-82)
Malaysia Malaysia	Malaysia (country of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2013)
Thailand Thailand	Thailand (Kingdom of)	native	Zhengyi, Wu/Raven, Peter H./Deyuan, Hong (2013)
Vietnam Vietnam	Vietnam (Socialist Republic of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2013)

Control:  If you know of control methods for Sacciolepis interrupta, please let us know.