250 CXLIIL CYPERACEA. 
Hypogynous bristles small and not thickened under 
22. ''RICOSTULARIA, 
ae: "scales. often at ‘first minute thickened and 
acuminate under the nut . 23, LEPIDOSPERMA. 
No hypogynous bristles or cales 
Spikes mE when E-Réwdrod the lowest eem 
s long as the outer empty 
Sta: . 24, CLADIUM. 
Spikelets p "when 2-fowen ed the lo west 
T ring glumes obtuse and peer 
dite empty ones. Stam — 3t . 25. GAHNIA- 
Spikelets dekitairy or clustered in teoriler ly 
nched inflorescence, when over the 
lowest a and often unisex 
t Nut crowned by the sore or r oblong base 
of the style . . 26. CAUSTIS. 
Spikelets in a small terminal head. Stamens or 
8 . 27, ARTHROSTYLES. 
per numi cylindrical spike enclosed 
inl S baty d x "Stam mens 6 . 28, REEDIA. 
Spikelets p t or ony p ` Stamens 
indefinite (12 or more) . . . 29. EvANDRA. 
Tre IV. Seleries. — Flowers strictly uniserual, in unisezual or androg ynos 
spikelets. No utricle jen the females. Ovary and nut seated on a di sk. 
- Single Australian genus < o eoe 5. ewe ee 90. ScLERIA. 
| Tree V. Cari — Flowers strictly ew in unisexual or androgynous spik- 
lsti, the pitis viret à in an utricle or perigynt 
ignes solitary, androgynous.  Bristle within 
tricle probing beyond it and hooked at the an 31. UwcIN1A. 
Spikelets aiea spicate or paniculate; unisexual or 
gynous. Bristle within the utricle not ex- 
ere nor hooked and often deficient  . . 99. CAREX. 
Trise I. Sctrpex.—Spikelets golitaty clustered capitate or umber 
late, with several often numerous h maphrodite SONGS. rarely up 
in Kyllinga reduced to 2 or 1. dip ty glumes at the base us y 
lor 2. Hypogynous bristles or eta when present filiform or flat. 
1. KYLLINGA, Rottb. 
Need with a single apparently terminal hermaphrodite flower oF 
halle’ nan aby vnde or imperfect flower immediate] 
2s it. unes 3 or 4, distichous, concave or navicular and d at 
of which the upper 2 closely enclosing the flower and fruit 47 e 
length falling off with it, the short stipes or rhachis of the spike'e 
being articulate at or above a base, the lowest glume small and emp?" 
No ales or bristles. Stam 3 or fewer. Style c? 
tinuous with the ovary, not thickened at tlie Tus usually deciduous ; 
stigmatic branches, 2, es orm. „Nut sessile, flat, without ay BYE 
nous disk. —Pere anaia rarely ann — with simple stems le à 
— Pone Smal very n s, densely crowded in 5 i 
more terminal globular or x oblong-cylindrical heads, 
