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Compilation
Andropogon trichopus

2 Images see all

Isotype of Andropogon trichopus Stapf [family POACEAE]
Holotype of Andropogon trichopus Stapf [family POACEAE]
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Name

Identification
Andropogon trichopus Stapf [family POACEAE ] Sorghastrum stipoides (Kunth) Nash [family POACEAE ] (stored under name); Sorghum trichopus Stapf [family POACEAE ] Verified by Stapf,O.,
Related name
  • Andropogon trichopus
  • Sorghastrum trichopus
  • Sorghum trichopus
  • Sorghastrum stipoides

Flora

Entry for SORGHUM trichopus Stapf [family POACEAE]
Herbarium
Royal Botanic Gardens, Kew (K)
Collection
Flora of Tropical Africa
Resource Type
Reference Sources
Entry From
Flora of Tropical Africa, Vol 9, page 1, (1917) Author: (By O. STAPF.)
Names
SORGHUM trichopus Stapf [family POACEAE]
Andropogon nutans Franch. (forma) [family POACEAE], Contrib. Fl. Congo Franç. 21; not of Linn.
Andropogon trichopus Stapf [family POACEAE], in Kew Bulletin, 1897, 287.
Information
Perennial (Barter), up to 5 ft. high. Culms (only the upper parts known) erect, rather slender, smooth, glabrous. Leaf-sheaths glabrous, smooth, the uppermost very long; ligules short, scarious, pubescent; blades (uppermost) subsetaceously convolute, 1/2 ft. long, smooth, glabrous, closely nerved, 2 primary lateral nerves on each side more prominent below. Panicle linear-oblong, erect or somewhat flaccid, 6–10 in. long; rhachis smooth, glabrous; branches semiverticillate, many fascicled at the nodes, very unequal, the longest up to 4 in. long and up to 6-noded, repeatedly divided, filiform to capillary, hairy towards the tips. Racemes 3–1-noded, each sessile spikelet save the uppermost accompanied by an empty pedicel, the uppermost (or in 1-noded racemes the solitary spikelet) by 2 empty pedicels; joints and pedicels alike, finely filiform, ciliate, cilia up to 1/2 lin. long, joints 2 1/2–3 lin. long, pedicels 1 1/2–2 lin. long. Spikelets lanceolate to lanceolate-oblong, subacuminate, 2–2 1/2 lin. long, pale brown to straw-colour. Glumes equal, chartaceous, thin; lower minutely truncate, loosely hairy on the back, scabrid on the subterminal keels, finely 9-nerved; upper very similar, 5-nerved. Valves equally long; of lower floret broad-lanceolate-oblong, 2 lin. long, hyaline, densely ciliolate upwards, 2-nerved; of upper floret oblong, ciliolate upwards, 3-nerved, lobes adnate to the awn; awn 4 lin. long, very slender, kneed at and twisted below the middle. Lodicules glabrous. Anthers 1 1/4 lin. long. Grain oblong, 1 lin. long, reddish-brown.
Distribution
Nigeria Upper Guinea on open plains at Nupe, Barter, 1375!
Notes
Two specimens collected in French Guinea (Pobéguin, 507 from Kouroussa and 1731 from the Baffing valley) may have to be connected with S. trichopus. They dissect very similarly, but have much longer and perfect awns (5–6 1/2 lin. and up to 12 lin. respectively) and glabrous peduncles. But as neither is accompanied by complete culms and leaves, their status is still doubtful. They and S. trichopus as originally described approach the American S. nutans, Linn., very closely indeed.

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