Thyrsostachys Gamble

Genus

Angiosperms > Poales > Poaceae

Characteristics

Arborescent bamboos, moderately sized; clumps very dense. Rhizomes short necked, pachymorph. Culms unicaespitose, erect; internodes terete. Branches several to many, 1 dominant. Culm sheaths persistent, thickly papery; ligule short; auricles absent or small without bristles; blade recurved or erect, triangular. Leaf sheath blade small to moderate-sized; ligule short; auricles absent. Inflorescence iterauctant, fully bracteate, comprising a cluster of 1–3 fertile pseudospikelets and 1 or 2 sterile ones subtended by a spathiform 2-keeled prophyll, sessile upon a branch node. Pseudospikelets with prophyll, 1–3 florets plus a fertile terminal one and a rachilla extension, falling together, not disarticulating; rachilla hairy. Glumes 2–4; lemma papery; palea 2-cleft for ca. 1/3 of its length; lodicules absent to 3, ciliate. Stamens 6, long exserted; anthers apiculate. Ovary turbinate, stalked; style long; stigmas 1–3, feathery. Caryopsis terete, smooth, glabrous, with persistent style base. 2n = 76*.
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Hardiness (USDA) 8-12

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Images

Thyrsostachys unspecified picture

Distribution

Thyrsostachys world distribution map, present in Bangladesh, China, Lao People's Democratic Republic, Myanmar, Thailand, and Viet Nam

Identifiers

LSID urn:lsid:ipni.org:names:19142-1
WFO ID wfo-4000038360
COL ID 8W47H
BDTFX ID -
INPN ID 446346
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Thyrsostachys

Lower taxons

Thyrsostachys siamensis Thyrsostachys oliveri