Cyperus. | . CYPERACEZ. 1139 
Glumes more or less mucronate; stems slender 
Mucro of glume erect; nut less than half as ‘gina as pee of 
glume; stamen 1; stems slender ilis 
: Mucro of glume recurved ; nut half as long as body a erm 
stamens 2-1 cuspidatus 
Glumes not mucronate 
ut marble- Bray ae very obtuse; annual, stems 
slender ; inflorescence always umbellate; stamen 1, rarely 2 
Jlavidus. 
Nut nares trigonous, rounded at top: 
as long as obovate-truncate glume ; annual, stems 
‘ Sa a “unt sometimes reduced to a single head ; 
stamen 1, ifformis 
Nut consideraby shorter than glum 
lumes subtriangular at tip; an ae stems slender ; 
sa Smeets or reduced to a single head; stamen 1, 
Ly 2 silletensis 
rare 
ste obtuse; stems medium or slender; flowering in 
first season, but often biennial or perennial, with a short or 
long rhizome; inflorescence always umbellate; stamens 
Haspan. 
#Peronninls with a woody rootstock ; stamens usually 3:—[p. 1158] 
orescence of one head :— 
Rhizome very aide ; rootlets wiry; stems slender, close-set, 
at b 
nodose 
Stems close rei l-seriate; spikelets 3-12 in a lax ape nut 
black ; style nearly as long as nUt.......cccseceeeeceoeoreees 
iveus. 
Stems caxspitose, with one dense, shdtvoda, white a nut 
with white reticulations; style much shorter than nut; 
stamen 1 ‘eliclenttiie 8. 
Rhizome pti ; rootlets thick; stems rather stout, sles 
distant, subterete renarius 
Inflorescence deusncassctie eae — 
— = fruit rather dist: 
n fruit tightly pac say -+-pr 
Skt aie. rarely mubvasemesilly (Aippchaedls “sauces usu 
—Lp. 1138] 
}Rachilla of spikelets not ip ag or at all winged :—[p. 1140] 
SAnnuals with tufted stems :—{p. 1140 
umes with midrib Facto into a distinct mucro or bristle ; 
nut about one-third the length of the glume :—[p. 1140 
Glumes boat-shaped, keel acute, excurrent as a hardly 
diffusus 
ibisquama. 
’ 
