Trisetum lasiorhachis (Hack.) Edgar
Details
Trisetum lasiorhachis (Hack.) Edgar, New Zealand J. Bot. 36: 549 (1998)
Nomenclature
(Hack.) Edgar
Hack.
Edgar
1998
549
ICN
species
Trisetum lasiorhachis
Classification
Descriptions
Trisetum lasiorhachis (Hack.) Edgar
2n = 28
Trisetum lasiorhachis (Hack.) Edgar
Strong, dense but narrow tufts, (5)-12-60-(85) cm, sometimes rhizomatous, with pale straw-coloured leaf-sheaths and dull green to grey-green leaf-blades usually with scattered long hairs, with pilose culms and often pubescent panicle-rachis and branches; branching extravaginal. Leaf-sheath to 6 cm, pubescent. Collar hairs few, very long, fine. Ligule 0.3-0.5-(0.8) mm, truncate, erose, glabrous or ciliate. Leaf-blade 5-25 cm × 1.3-3 mm, flat, rarely inrolled and narrower, often with scattered long hairs, abaxially prickle-toothed towards tip, adaxially ribbed with ± scattered minute prickle-teeth or short hairs on ribs; margins minutely prickle-toothed, and often with scattered long hairs. Culm 10-50 cm, internodes pilose above and below nodes, densely pilose, pubescent, or sometimes glabrous towards panicle. Panicle (3)-7-14-(21) × 1-3-(5) cm, lanceolate, somewhat open with visible rachis but spikelets clustered and individually inconspicuous; rachis, branches, and pedicels densely pilose to sparsely, minutely hairy. Spikelets 5-8 mm, pale green, often purple-tinged. Glumes unequal, keels often strong, prickle-toothed in upper ½ or almost throughout; lower ⅔-⅘ length of upper, narrow-oblong, tapered to often long-acuminate tip, upper < spikelet, elliptic, acute to shortly acuminate; margins almost entire with very few prickle-teeth near tip. Lemma 5-7.5 mm, bicuspid, minutely prickle-toothed or papillate throughout; awn 5-9.5 mm, straight to later recurved, insertion in upper ½ to upper ⅓ of lemma. Palea minutely prickle-toothed on keels and rarely on margins. Callus hairs to 0.8 mm. Rachilla hairs to 2 mm. Lodicules c. 1.3 mm, glabrous. Anthers 1.8-2.2 mm. Gynoecium: ovary to 1 mm; stigma-styles to 2.4 mm. Caryopsis c. 2.5 × 0.8 mm.
Taxonomic concepts
Trisetum lasiorhachis (Hack.) Edgar
Trisetum lasiorhachis (Hack.) Edgar
Trisetum lasiorhachis (Hack.) Edgar
Trisetum lasiorhachis (Hack.) Edgar
Trisetum lasiorhachis (Hack.) Edgar
Trisetum lasiorhachis (Hack.) Edgar
Trisetum lasiorhachis (Hack.) Edgar
Trisetum lasiorhachis (Hack.) Edgar
Trisetum lasiorhachis (Hack.) Edgar
Trisetum lasiorhachis (Hack.) Edgar
Trisetum lasiorhachis (Hack.) Edgar
Trisetum lasiorhachis (Hack.) Edgar
Collections
Metadata
9e29aa1b-ec12-4f3e-8abb-87cd8d1113c8
scientific name
Names_Plants
1 January 2000
10 March 2024