Trisetum antarcticum (G.Forst.) Trin.
Details
Trisetum antarcticum (G.Forst.) Trin. (1831)
Nomenclature
Classification
Subordinates
Descriptions
Trisetum antarcticum (G.Forst.) Trin.
2n = 28
Trisetum antarcticum (G.Forst.) Trin.
Tufts usually dense, to 40 cm, with dull green rather rigid leaves usually reaching or sometimes overtopping the dense, spike-like panicles; branching extravaginal at plant base, sometimes intravaginal above. Leaf-sheath to 4 cm, very minutely pubescent or with extremely minute appressed hairs between ribs. Ligule 0.2-0.6 mm, truncate, erose, often sparsely minutely ciliate, abaxially sometimes minutely prickle-toothed. Leaf-blade 3.5-22 cm × 1.5-3-(4) mm, flat or inrolled, abaxially smooth but scabrid near long-narrowed tip, adaxially ribbed with sparse to dense minute hairs and prickle-teeth on ribs, hairs slightly longer near ligule; margins minutely prickle-toothed. Culm 4-30 cm, internodes glabrous, occasionally a few minute prickle-teeth below panicle. Panicle (2)-4-10-(15) × 0.6-2.5 cm, compact, oblong, very dense, or with some lower branches more obvious and slightly spreading; rachis glabrous, branches and pedicels smooth or with sparse minute prickle-teeth or sometimes minute hairs. Spikelets 4.5-7 mm, greyish green or brownish amber. Glumes unequal, hyaline, keel thickened with sparse long prickle-teeth on upper ½; lower ⅔-⅘ length of upper, linear-lanceolate, upper slightly < spikelet, elliptic; margins with prickle-teeth near acuminate to almost mucronate tip. Lemma 4-6.2 mm, bidentate to shortly bicuspid, papillose, prickle-toothed above and on keel; awn 3.5-6 mm, straight to later recurved, insertion in upper ¼ of lemma. Palea with minute prickle-teeth on keels and usually on margins. Callus hairs to 0.5 mm. Rachilla hairs to 2.5 mm. Lodicules c. 1 mm, glabrous. Anthers 1-1.7 mm. Gynoecium: ovary c. 0.8 mm; stigma-styles to 1.3 mm. Caryopsis 2.5-3 ×c. 0.6 mm.
Taxonomic concepts
Trisetum antarcticum (G.Forst.) Trin.
Trisetum antarcticum (G.Forst.) Trin.
Trisetum antarcticum (G.Forst.) Trin.
Trisetum antarcticum (G.Forst.) Trin.
Trisetum antarcticum (G.Forst.) Trin.
Trisetum antarcticum (G.Forst.) Trin.
Trisetum antarcticum (G.Forst.) Trin.
Trisetum antarcticum (G.Forst.) Trin.
Trisetum antarcticum (G.Forst.) Trin.
Trisetum antarcticum (G.Forst.) Trin.
Trisetum antarcticum (G.Forst.) Trin.
Trisetum antarcticum (G.Forst.) Trin.
Trisetum antarcticum (G.Forst.) Trin.
Trisetum antarcticum (G.Forst.) Trin.
Trisetum antarcticum (G.Forst.) Trin.
Trisetum antarcticum (G.Forst.) Trin.
Trisetum antarcticum (G.Forst.) Trin.
Trisetum antarcticum (G.Forst.) Trin.
Trisetum antarcticum (G.Forst.) Trin.
Collections
Metadata
ef58db68-90e7-4e51-8409-a435f7169012
scientific name
Names_Plants
1 January 2000
10 March 2024