Avenastrum. | GRAMINE® (Stapf). 477 
7. A. caffrum (Stapf) ; “isc 2 ft. long, glabrous, 3-4-noded, 
sheathed to the base of the panicle; leaves 4-6 near the base, 3 
higher up; sheaths tight below, loose or open above, glabrous 
ligule oblong, up to % lin, long; blades very narrow sarang She con- 
volute, the lower 5- Ti in. long, ‘those of the barren shoot o 1 ft. lon 
glabrous, strongly and closely few-nerved, margins een pani sks 
sien about 6 in. long, — saditing and subflaccid ; thachis 
with ne elite h tina glumes very thin, lanceolate, acuminate, 
rded; awn 
from above the middle, fine, pallid, column 23-2 lin. long, bristle 
5 lin. long ; pales 3 lin, long, keels minutely ciliolate ; anthers up to 
= in. long ; ovary top hispidul ous. Trisetum longifolium, Nees, 
Fl. Afr. Austr. “348 (partly?). Avena caffra, Stapf in Kew 
Bulletin, 1897, 293. 
Var, (? ) be i viegeaE ; oe exserted, very minutely Lanna 
below the 3 leaves up to2 lin. broad, flat or in nvolute, 5 pe more or les 
hairy taciva ape rr ts rather ncn me than j in the typical "form 
aaa REGION: Aliwal North Div.; Witte Bergen, on rocks, 7500 ft., 
rege ! 
sf REGIon: Var. natalensis, Natal: Riet Vlei, 4000-5000 ft., Buchanan, 
8s also indicates the Stes from the dunes near Capetown and from 
Talbe nf I have not seen Ecklon i sunien from these localities, but it seem 
to a the probable that his Trisetum longifoliwm is a mixture of two different 
Spec 
The riety is wegen seer Avena Rothii, Kew. Bull. 1897, 292, from 
Abyssinia, from which it differ e much smaller number of nodes, and in the 
valve tips being he or very ee aristulate. 
XXXIV. AVENA, Linn. 
Spikelets large or very large, 7-20 lin. long, pendulous in open, 
rem very lax panicles ; thachilla hairy or glabrous, disartieulating 
ve the glumes and between the valves, or “only above the glumes, 
or not at all in cultivated forms, usually terminated by a rudimentary 
valve. Florets 3-5, the lower 1 or 2 (rarely 3) 9, the upper 
reduced, smaller, or barren or quite rudimentary. Glumes 2, 
Persistent, scarious, equal or subequal, acute or acuminate, rounded 
on the b ‘k, 7-11-n Valves distinctly | shorter or just ual- 
acuminate, bifid, with or without bristles from the lobes, 5-9-nerved, 
ralph! ee -awned ; awn dorsal from the middle or slightly above it, 
d and twisted below or (in the upper valves) imperfect; callus 
