CYPERACEZ (Clarke). 151 
I. KYLLINGA, Rottb. partly. 
Spikes ovoid or cylindric, dense, with many small compressed 
spikelets. Spikelets of = 7 disti chous glumes, 1—4-flowered ; lowest 
(or 2 lowest) flower 2- sexual, perfecting a nut; upper 
flowers sterile, male, or uppermost glume empty; 2 est 
glumes smaller, empty (bracts) ; rhachilla (wingless) in fruit 
falling off by coer from a cushion below fa lowest 
fertile flower. Stamens 1- 3, anterior; anthers narrow, oblong, not 
crested. Style slontar: branches 2 linear, in a plane passing through 
the rhachilla. Nu oblong or ellipsoid, compressed laterally, smooth. 
Glabrous (in * Saheesiany and K. alba, var, B, the top of rah ulm is minutely 
es ose 
ce K. . 
base of the stem 3 "ile scence a head of J-3 eefeoere! sbsolately sessile, spikes ; 
Dis iiss ae ss, in all hot and temperate regions, except Europe. A’ 
specially ‘Aftioa genu 
Subgenus I, Bet a Keel of fertile glume winged in fruit. 
Head he white . 
uf a. 
Subgenu Bv-Kvnuivoa. Keel of fertile glume not winged. Spikelets 
perfecting 1 pan ely 2) nu 
oo ome horizontal, ge of 1 (rarely more) spike, Bracts rarely exceed- 
Spike ofa few spikelets... 0. ue eee > creenral 
_ Spike dense, often somewhat gg 
Rhizome, horizontal or oblique, t chic Bra ‘often 4 or isk 
acts ay — long; mil spi ike esl ... (4) elatio: 
ong ; spike as ov we 1 scorn aee 
y an Sie sige 
Mi is a cylindric, straw-coloured ... ... (6) cylindrica. : 
} Subgenus III. Pseupo- ee Keel of fertile glume not winged. Spike- 
as often perfec cting 2 (or more) nu 
Middle spik vm heat brown... ... (7) pulchella. 
Spike globose, somew olden-brown ... ... (8) tetragona. 
Spike large, globose, erect white fj (9) Lehmanni. 
Spike esc straw-colou ae - (10) Buchanani. 
a hes 3 di; aaa 0-5 (usually 3), spreading, lowest 
~ «in. long, similar to the leaves; spike 1, $in long, r 
