Viper Grass is a loosely clustered annual grass with
stems 50 cm or taller, slender, usually straggling and rising up from a
prostrate base, often rooting at the lower nodes. Leaves are glandular
especially on the sheaths; leaf-blades 4.5-28 cm long, 4-8 mm wide,
finely pointed. Inflorescence is 8-34 cm long, linear or
elliptic-oblong to pyramidal; spikes 0.6-5 cm long, stiff, rising up at
first, reflexing and deciduous at maturity. Spikelets are 1-3-flowered,
narrowly wedge-shaped, 5.7-9 mm long, closely over-lapping on the
flattened, narrowly green-winged rhachis; glumes narrowly elliptic with
with a tail curving tips, 6.1-8.2 mm long, leathery, asymmetric,
usually over-lapping on the lower side and obscuring the florets,
glandular along the keel. Viper Grass is is found throughout the
Tropical world. Flowering: May-October.