The genera of South African plants : arranged according to the natural system / by William Henry Harvey.

  • William H. Harvey
Date:
1868
Catalogue details

Licence: Public Domain Mark

Credit: The genera of South African plants : arranged according to the natural system / by William Henry Harvey. Source: Wellcome Collection.

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    Lowest flowering glume neuter or male. Flowering glume and palea (the latter generally flattened) hardening in fruit. The 2 lowest glumes generally not very dissimilar and almost exactly opposite. Infloi’escenco almost every form of panicle. (In the subgenus Digitaria the lowest glume is generally very small, and the spikelets are arranged mostly in pairs on one side of digitate or clustered rachis. In subgenus Orlhopogon the 3 lowest glumes are generally long pointed and strongly nerved) 3. Panicom. Sjiikolets on very short, few-flowered ra- cemes, which are more or less deeply immersed in alternate hollows on one side of the thiekened rachis of the solitary, termiiTal spike.—Leaves flat. Otherwise ns in Paniemn 4. STENOTAPHRtiM. Anomalous Qemts.—ilxis of the spikelet pro- longed into a delicate filament (rudimen- tary glume). All the glumes and pnlero mucronate, the flowering ones not harden- ing consjjicuously in fruit. Both flowers contain scales. Palete remarkably cared on each side towards the base.—Spikelets arranged in digitate racemes. Leaves generally hairy 5. Bluffia. +t Spikelets involucrated at their base.—The involucre is extremely short, little more than a beard in TrieholcBna. Involucre of uniform bristles, persistent, principally placed on one side of the spikelet. Flowering glume and palea much hardened in fruit, and the glume generally wrinkled on its outer surface. —Spikelet generally gibbous G. Setaeia. Involucre persistent, of 2 forms, some of the bristles being feathered and some simply scabrous, completely surrounding the s])ikelet. 2 lowest glumes very small. Anthers penicillate. Grain obovate . . 7. Penicillaeia. Involucre extremely short, beard-like, fulling oir with the spikelet, which is silkily hairy, terminal and solitary on a long, slen- . der pedicel. Glumes distant and alter- nate, the 2 lowest extremely dissimilar. Flowering glumes very small 8. Teiohol^na. Involucre (falling off with solitary spikelet) composed of scabrous bristles, uniform in structure, unequal in length, 1 bristle extremely long.—Inflorescence densely spicate. Styles united at base .... 9. Gtmnotheix. Involucre embracing 2-3 spikelets, composed of 2 kinds of bristles, some long featliered