Thyrsostachys oliveri Gamble

Culms to 20 m, to 7.5 cm in diam.; internodes initially bright green, becoming dull green, 30–50 cm; wall rather thick; nodes slightly prominent. Branches several, main mid-culm ones to 1.5 cm in diam. Culm sheaths orange to brown, ca. 3/4 as long as internodes, papery, margins ciliate, apex rounded; auricles and oral setae absent; ligule ca. 2.5 mm, serrulate; blade reflexed, narrow, to 20 cm, base ca. 1/3 width of sheath apex. Leaf sheaths hairy; ligule short, pubescent; blade linear-lanceolate, 17–20 × 1.2–2 cm. Pseudospikelets 1.5–2.5 cm; prophylls to 1 cm; gemmiferous bracts 2 or 3; empty glumes 1 or 2; fertile florets 2 or 3; fertile lemma 1.2–1.6 cm; palea 1.4–1.8 cm, narrow, bifid for 1/4–1/3 of its length; lodicules 2 or 3. Anthers yellow, apiculate. Ovary turbinate; style 1, ca. 1.5 cm; stigmas 3. Caryopsis ca. 1 cm.

S Yunnan [Myanmar].

Forests on low hills, open areas; 500–700 m.