Cyperus. | CYPFRACEH (Clarke). 185 
yg The neue of the ng plant collected by Forbes are either 
C. madagascariensis or C. p ER gene ., Which hardly differs but by the oe 
bracts to the sagondary umbels. 
. MARISCUS, Gaertn. 
Spikelet of few, or many distichous eae 2 lowest empty, 
ew or man succeeding glumes 2-sexu al perfecting nuts ; upper- 
most male or sterile ; rhachilla disarkioaliting below the lowest fertile 
glume from a cushion; falling off in one piece. Stamens 3-2, 
anterior. Style with 3 linear branches. Nut triangular (or plano- 
convex from the flattening of the anticous angle), narrowly oblong, 
elliptie, or AP chtheg in longitudinal section, smooth; superficial cells 
nea Sh 
aig ano ous; leaves all near the base of the stem; inflorescence of 
all ma forms occurrin ng in Cyperus, 
DistR1B. Species 170, in all tropical and warm-temperate regions ; species 
psec to Europe; in the New World a few reach Canada and a few taal 
Sect. I. Bulbocaules. — sized. No stolons. Stems thickened at ne 
aye by the conspicuous scarious or brown leaf-sheaths. Umbel simple, small, o 
often ofl head. Spikelets sos pe iing 1 or few nuts (in M, vestitus 4-8 ei) 
Pabinsenience in Sec 
iat ee 1 not (rarely as in MM. albo- 
marg svar. 2nu 8) 
Ind ace of 1 bead of 1-3 sessile or 
sessile spikes ; spikelets fetfoue nut lipid 
Dense cylindric spikes ed, i 
cri Spe umbel ; cpikelete Insioostkes: saat narrow- 
(1) capensis. 
oblor (2) albomarginatus. 
Spike ee -eylindric, peduncled, in a a simple 
soid... op 
mbel; spikelets obtuse ; pretest (3) Marlothii. 
= 
=] 
fe nuts : 
in one dense eee ‘ee coloured .. (4) dregeanus. 
lair Bas dunetea wait in a “simple umbel, 4 
red ne (5) vestitus, 
Sect. II, Eu-Marisci. Medium-sized. No stolons. Basal Jeaf-sheaths not 
como inflated. Umbel simple or nearly so. Spikelets ripening 1 or few 
nuts (in M. luguliformis 4-8 nuts), green or yellowish, not red. 
Leaves and bracts lee spikelets prt 1-2 
(rarel 8-4) nu These are all o species > 
1 es wnbellatus ee ‘u. flavus), Vahl, in the opinion 
Spikelets linear-lanceolate; rays as long as the 
i 3 sis . ... (6) sieberianus. 
Spikelets oblong ; spikes: large, "Jong, | dense, ‘ : 
‘ cylindrie (7) nossibeensis. 
Spikelets linear lance lat ee ikes shorter 
“on cola e sma sp (8) ambellates, 
Spikelets gonads 2-1. flowered, 1- ‘nutted ; > a ys : 
n long... ... (9) radiatus. 
Scactcce oblong, 1; flowered ; mays aca any .. (10) macer. 
Leay Pikelets oblong, 2-3-nutted - (Ql “i 
ves and bracts pris spik elets m ring ‘3-5 n (12) luzuliformis. 
€s und bracts s 
ets minute 
