Panicum bisulcatum Thunb., Poaceae

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Present on Pacific Islands?  no

Primarily a threat at high elevations?  no

Common name(s): [more details]

Chinese: kang ji

English: Japanese panicgrass, blackseed panic, chaff panic

Habit:  grass

Description:  "Annual, semi-aquatic, decumbent, rooting at the nodes, up to ca 80 cm tall; culms often branching, nodes glabrous.  Leaf sheaths glabrous except for few cilia on one margin upwards; ligules membranous, less than 1 mm long; leaf blades linear, narrowed upwards, apex acute or acuminate, margin flat, 2-15 cm x 0.4-1.3 cm, ± scabrous.  Panicles spreading, up to 20 cm long, primary branches up to 10 cm long, pedicels 0.5-5 mm long, spikelets 2.5-3 mm long; lower glume ca 1/2 as long as spikelets, 3-5-nerved, upper glume ca as long as spikelet, 5-nerved; lower floret sterile, lemma ± as long as upper glume, 5-nerved, palea absent; upper floret bisexual, lemma smooth and shining, margins embracing palea, ca 2 mm long, palea ca as long as lemma" (Stanley & Ross, 1989; vol. 1, p. 192).

Description from GrassBase.

Habitat/ecology:  Along edges of streams (Stanley & Ross, 1989; vol. 1, p. 192).

Propagation:  Seed

Native range:  Asia, Australia, Malesia (GRIN)

Presence:

Pacific
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
Philippines Philippine Islands	Philippine Islands	native	U.S. Dept. Agr., Agr. Res. Serv. (2013)

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)	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)	native	U.S. Dept. Agr., Agr. Res. Serv. (2013) Celebes
Japan Japan	Japan	native	U.S. Dept. Agr., Agr. Res. Serv. (2013)
Vietnam Vietnam	Vietnam (Socialist Republic of)		Waterhouse, D. F. (1993) (pp. 67, 78)

Control:  If you know of control methods for Panicum bisulcatum, please let us know.