340 CYPERACEE. [ JUNCELLUS. 
Species about 15 in most hot and temperate regions. 
I have followed C. B. Clarke in retaining this genus although 
{ do not consider it a phylogenetic unit but rather an agglomera- 
tion of species related to different groups of species in the genus 
Cyperus. Its characters, however, are definite and even if they 
are artificial accepting them as generic helps to make the large 
genus Cyperus less unwieldy. 
Leaf-blades flat, with well developed, long, 
broad blades; inflorescence of numerous 
spikelets arranged in spikes which in turn 
form a compound umbel . : - L. J. alopectroides 
Leaf-blades narrow, flat or more or less trigon- 
ous ; inflorescence a head of spikelets (rarely 
reduced to a solitary one). 
Leaf-blades trigonous or subcylindrical often 
much reduced; inflorescence a one-sided 
head of spikelets or sometimes a solitary 
one ‘ ; : ; : . 2. J. levigatus. 
Leaf-blades flat and narrow, well developed ; 
inflorescence a dense head of small spike- 
lets surrounded by leaf-like bracts. . . 3 J. pygmeus. 
1. J. alopecuroides, C. B. Cl. in F. B. I. vi, 595; Cyperus 
alopecuroides, Rottb. Descrip. et Icon. (1773) 38. 
An erect-growing, glabrous, marsh plant, about 25 ins. high. Roots 
forming a dense fibrous mass. Stems covered at the base with 
broad, brown leaf-sheaths. Leaves linear, gradually acuminate, up 
to } in. broad, with 3 prominent and many secondary parallel nerves, 
smooth ; leaf-sheaths usually split down one side by the growing 
stem. Spikelets pale brown, ultimately in compact spikes 1-14 ins. 
long which are arranged in a compound inflorescence, primary and 
often secondary branches arranged in an umbellate manner, primary 
rays up to 5 ins. long; primary bracts 3, leaf-like and over-topping 
the inflorescence, more or less unequal in length; secondary bracts 
,narrowly linear, sometimes much reduced. First glume empty, 
linear-lanceolate, acuminate. Second glume suborbicular, with a 
rounded apex. Flowering glumes boat-shaped with a rounded keel, 
suborbicular in outline when spread open, acute or slightly apicu- 
late, +, in. long and broad. Stamens 2. Style including the 2 long 
arms 7g in. long. Nut broadly obovate, ~; in. long, and go in. 
broad, flat on the adaxial side and slightly rounded on the abaxial. 
