Pennisetum macrourum Trin.
Details
Pennisetum macrourum Trin. (1826)
Nomenclature
Trin.
Trin.
1826
ICN
Pennisetum macrourum Trin.
species
Pennisetum macrourum
Classification
Vernacular names
Descriptions
Pennisetum macrourum Trin.
Large, coarse, erect, perennial clumps with densely crowded leaves from stout, short, or sometimes far-creeping rhizomes; branching intravaginal. Leaf-sheath long, chartaceous, rounded, strongly ribbed, light creamy brown or sometimes pinkish, usually with scattered to dense, stiff, ± appressed hairs, sometimes glabrous. Ligule 1-2 mm, to 4.5 mm on upper leaves, a membranous densely long-ciliate rim. Leaf-blade (25)-40-60-(100) cm × 1-3 mm diam., inrolled or folded, or flat and up to 7 mm wide, linear, very long tapering, abaxially with some scattered hairs, scabrid above, adaxially deeply furrowed, ribs finely scabrid or smooth; margins scabrid above, tip long, fine, flexuous. Culm 75-120 cm, erect, terete, internodes very minutely scabrid below inflorescence. Panicle (16)-20-40 cm, spike-like, erect or ± nodding, straw-coloured, light brown to sometimes purple suffused; rachis densely finely scabrid. Spikelets 4.5-6 mm, densely crowded, almost sessile, lanceolate, acute or acuminate, solitary or rarely paired within an involucre of numerous, fine, minutely scabrid bristles, one bristle much stouter and longer 9-15-(20) mm, remaining bristles usually slightly > spikelet (6-10 mm). Glumes « spikelet, hyaline, glabrous, nerveless or 1-nerved; lower 0.5-0.8 mm or 0, upper 0.8-1.7 mm. Lower floret Ø: lemma 4-6 mm, 5-nerved, hyaline, very minutely scabrid; palea 0. Upper floret ☿: lemma 4.5-5.5 mm, 5-nerved, submembranous, smooth below, often minutely scabrid towards acute apex; palea 4-5 mm, of similar texture to lemma, 2-nerved, faintly scabrid towards apex; lodicules 0.3-0.6 mm; anthers 2.5-4 mm; caryopsis c. 2 mm.
Taxonomic concepts
Pennisetum macrourum Trin.
Pennisetum macrourum Trin.
Pennisetum macrourum Trin.
Pennisetum macrourum Trin.
Pennisetum macrourum Trin.
Pennisetum macrourum Trin.
Pennisetum macrourum Trin.
Collections
Metadata
f1c574c4-840c-45f0-b82e-be74c884553a
scientific name
Names_Plants
1 January 2000
26 October 2024