Tristachya. | GRAMINEZ (Stapf). 453 
1. T. Rehmanni (Hack. in Bull. Herb. Boiss. iii. 8384); eompactly 
cespitose ; culms 3-3 ft., glabrous, rough, l-noded at the middle 
or above; leaves mainly ‘basal, sheathing the culm for 4-6 in., 
lowest sheaths very firm, rigid, persistent, “densely tomentose below, 
glabrescent above, upper sparsely hirsute or glabrous, nodes villous 
or glabrescent ; blades linear, tapering to a sharp point, 4~6 in. by 
spikelets 1-12 in —9 in erect contracted racemes; rhachi 
villous at the lowermost node ; peduncles 2—3-nate, up to 12 in. long, 
straight glabrous; pedicels 0; lower glume lanceolate, acute, 
7-10 lin, long, din, brown, glabrous, smooth, strongly 3-nerved; upper 
glume lanceolate, long subulate- a oe = lin. long, glabrous, 
smooth; lower flovet 3 : valve lanceolate, subulate-acuminate, 10-12 
lin. long, 5-nerved or 7-nerved above, me i smooth ; pale linear- 
oblong, 2-toothed, 9-10 lin. long, keels narrowly winged ; anthers 
lin 
2 ong ; oret valve linear-lanceolate, pubescent, 5- 
netved, submarginal nerves rather strong, lobes 1-nerved, produced 
into fine bristles 10 lin. long; callus pungent, 12 lin. long, villous ; 
—— 7. attri 21-3 in. long; pale oblo ng-linear , tip truncate 
spoon-shaped ; top ‘of ovary and styles pubescent. T. glabra, Stapf 
im Kew Bulletin, 1897, 294. 
1e Mooi River, near Potchefstroom, 
RI Reeton: Transvaal; by tl 
at Stryd Poort, 
KALawa 
Nelson, 31*! Thane esburg, Ba eet Wien apans Range, 
Kehmann, 5383! (5884 according to Hackel). 
A more glabrous form in the Shire Highlands. 
in ate: eae erect, 1-14 in. long, gla labrous 
glume lanceola ate, acuminate, about 10 lin. long, rather firm, jellowial 
0. g; 
Op of ovary and seyleaeyi 
Katanant Region: pone Leribe, Buchanan, 220! 
3. T. leucothrix (Trin. ex Nees, Agrost. Bras. 460) ; culms 1-2 ft. 
4 
2 
