Pycreus. | 
Spikes umbellate, sometimes nearly in a head, 
straw-coloured, yellowish or reddish, not 
chestnut-brown nor black. Roots fibrous 
(or rhizome less than } in, long). 
Spikelets small, delicate ; glumes whitish, 
very thin.—Annuals. 
Spikelets qty i in. broad, c . . 
Spikelets 4 in. broad : : . 
Spikelets yellowish, ferruginous, or brown- 
red ; glumes not scarious. 
Nut symmetric. 
Spikelets Tz in. wide, not bright . . 
Spikelets 4 in. wide, bright ferruginous . 
Spikelets eae in, wide, bright brown- 
red. 
Nut one-sided, the part next the rhachills 
flattened, Spikelets rela 
Spikelets } in. wide. . 
Spikelets ai in, wide . 
Spikes in 1 head (or in a very close umbel), 
white, straw-coloured or yellowish. 
Head 1, more or less yellow. 
Stem and leaves rather easel spikelets 
$ in. wide 5 74 
Stem and leaves capillary ; : spikelets i in. 
wide : op 4 
Umbel very close ; heads white. 
Stems bulbous at the base . . 23 
Stems not thickened at the base, aeean: 
bent . . 24, 
Spikes in a simple umbel (or it inl head), chest- 
nut, black or dusky brown. 
Stolons 0. No woody rhizome. 
Plants very slender ; stems less than 6 in. 
high. 
Spikelets J, in. broad . : . . 
Spikelets ;4, in. broad . . 
Plants medium-sized. Stems 6-28 i in. ‘high. 
Glumes not overlapping in fruit, black- 
chestnut with green keel : : 
Glumes closely overlapping in fruit. 
Spikelets lanceolate, i.e., sides not 
parallel . ° 
Spikelets linear-oblong, sides parallel . 
Rhizome woody or stolons present. 
Head 1 only 
An umbel, or distinctly compound head. 
Spikes chestnut to black or a rich brown, 
Spikelets moderately compressed . 
Spikelets strongly flattened ° 
Spikes a smoky yellow-red_ . : 
Umbels compound, or subsimple, large. Spike- 
lets yellow, straw-coloured or pale brown. 
Umbel subsimple, Margins of glumes crisped 
wavy . * . ° . . 
VOL, VIII. 
CLVI. CYPERACEZ (CLARKE), 
25. 
26. 
27 
15. 
20. 
29. 
28. 
. 31. 
. 30. 
32. 
289 
. P. nitens. 
. P. pumilus. 
. P. polystachyos. 
. P. ferrugineus. 
. P. Hildebrandtii, 
. P. suleinuz. 
. P. pelophilus. 
. BP. propinguus. 
. P. capillifolius. 
. P. smithianus. 
P. cuanzensis. 
P. minimus, 
P. melas. 
P. elegantulus 
P. Athiops. 
P. globosus. 
P. nyasensis. 
P. wmbrosus. 
P. betschuanus. 
P. spissiflorus. 
P. angulatus. 
U 
