Thysanolaena latifolia (Roxb. ex Hornem.) Honda

bamboo grass, tiger grass, Nepalese broom grass


Info

Subfamily: Panicoideae
Genus etymology: Thysanolaena = "brush cloak" [Greek] refering to the hairy second lemma
Species etymology: latifolia = "broad leaved" [Latin] with broad leaves
Photosynthetic type: C3 (cool season)
Nativity: naturalized - intentional
First recorded in Hawaiʻi: 2000

Map

 Distribution of Thysanolaena latifolia in Hawaiʻi.

Inflorescence

Thysanolaena latifolia Inflorescenceimage credit: Apichart_Songsangchun
Thysanolaena latifolia Inflorescence
Thysanolaena latifolia Inflorescence

Plant

Thysanolaena latifolia Plant
Thysanolaena latifolia Plant
Thysanolaena latifolia Plant
Thysanolaena latifolia Plant
Thysanolaena latifolia Plant
Thysanolaena latifolia Plant
Thysanolaena latifolia Plant
Thysanolaena latifolia Plant
Thysanolaena latifolia Plant

Spikelets

Thysanolaena latifolia Spikelets
Thysanolaena latifolia Spikelets
Thysanolaena latifolia Spikelets
Thysanolaena latifolia Spikelets
Thysanolaena latifolia Spikelets

Collar

Thysanolaena latifolia Collar
Thysanolaena latifolia Collar
Thysanolaena latifolia Collar
Thysanolaena latifolia Collar
Thysanolaena latifolia Collar

Description

Sheaths mostly glabrous, margins often ciliate distally; collars pubescent; blades 20-65 cm long, 2-7(10) cm wide, flat, usually glabrous or mostly so on both surfaces, occasionally sparsely pubescent abaxially, adaxial surfaces often pubescent immediately distal to the collar and ligule. Panicles 17-140 cm; branches to 75 cm, often drooping, pulvini pubescent. Spikelets 1.2-2.8 mm, frequently abortive. Lower glumes 0.5-0.9 mm, broadly ovate; upper glumes 0.5-1 mm, broadly elliptic; lower lemmas 1.3-2.4 mm, elliptic lanceolate, acute to acuminate; upper lemmas 1.2-2.8 mm, lanceolate, acute to acuminate; anthers 0.6-1 mm, yellow; stigmas purple. Caryopses 0.4-0.5 mm. 2n = 24.
(Description source: Barkworth, M.E., Capels, K.M., Long, S. & Piep, M.B. (eds.) 2003. Flora of North America, north of Mexico. Volume 25. Magnoliophyta: Commelinidae (in part): Poaceae, Part 2. Oxford University Press, New York. 783 pp http://floranorthamerica.org/Thysanolaena_latifolia )