7% 
Cyperus. | CYPERACE® (Clarke). 163 
Glumes large, bright-coloured, with : 
white points... ms ane (5) Teneriffe. 
Glumes chestnut-brown or dark red ; 
nut 3 the length of the glume (6) rupestris. 
of the glum 
As lat, but leaves setaceous, eplindsie, 
obtu (7) amnicola., 
As C0. rupesri, but spikelets m narrower 
nut v mall .. (8) parvinux. 
Stout pots ids woody rhiz 
Glumes se oa aC. yellow or snes 
rown, densely pack (9) compactus. 
rue Pel awe are, broad, a little 
inflated, les . (10) margaritaceus. 
Sect. 2. Spikes simply belied (1-headed stems 
often occur); spikelets ee or clustered, 
rarely on bs leat-bearin 
U ontracted ; rays ver 
Spikelets dull grey-red ; ioe oborid .. (11) bellus. 
Spik ae dull ; une muticous ; 
oblon ie ee n (12) fuscescens. 
Umbel open 
= spilt Live Reine ee long, with 
(18) semitrifidus. 
Spikelets ue, peor ; “‘style- branches 
long . (14) tenax. 
Sect. 3. Umbel co mpound. or apparently simple, 
of fascicled, ice “ote Sa agglomerated, 
spikelets ; leaf-be 
pikelets very gies meee minute, 
i obtuse . (15) difformis. 
seeks “much com ressed 5 Jumes 
a oir 8 (16) heematocephalus. 
Sect. 4. Uinbel usually compound, os apparently 
simple digitate ri rathe 
arin 
triquetrous ‘at the top; spikelets 
‘oblong, rather thick (17) pulcher. 
qe =~ ous at the tops ‘spikelets 
, compressed . (18) spharospermus. 
Sect. - Lent Bal sic t lar, arge ; pla 
pidge ak 2-4, scarcely overtopping the viailiel 
m triquetrous at the top . (19) denudatus. 
Stem obtusely trigonous or nearly terete 
at the top . (20) marginatus. 
Bracts num on exceeding the “umbel, 
usually 8 or more: 
Stem ronal at the top .. (21) textilis. 
Stem with 6 angles at the top . . (22) sexangularis. 
of umbel equal, usually 40 or more, 
arrienmf th agen : 
riquetrous at t ad, + (23) isocladus. 
te top 
Sect. 6, Solitary spikelets Hpi in the gous 
pound umbel; leaves long, flat; bracts long, 
usually more than 6: 
eaves broad, Lr Sipe 8-nerved, flat .. (24) albostriatus. 
Leaves and bracts narrower, more rigid, 
obscurely , gsi : 
lumes minutely hairy on the edges ... (25) P 
Glumes gleueane on the edge . (26) conor en 
ges 
Spikelets 8-16 together, spicate rather 
hte dligktabescrnce .. (27) subchoristachys. 
M 2 
