Cyperus. | CLXXIL CYPERAOEX. (C. B. Clarke.) 605 
heads (otherwise as C. diffusus). Scirpus trialatus, Boeck. in Linnea, 
mxvi. 721.—Isolepis, Wall. Cat. 3473. 
From Preu to PENANG and MALACCA, frequent, Helfer (Kew Distrib. 6164), 
&.—DisrRIB. S. China. 
Stems 12-20 in. Umbels 3-4 in. in diam. Spikelets usually about 6-fld. 
20. C. radians, Nees & Meyen ex Nees in Linnea, ix. 285 (name) 
and in Nov. Act. Nat. Cur. xix. Suppl. 1, 63; umbel simple or compound 
rays longer than stem, spikelets 1-30 clustered compressed or nearly 
ete, glumes broad striate mucronate, nut broad ovoid 4 length of glume. 
Benth. Fl. Hongk. 386; Boeck. in Linnea, xxxv. 515; C. B. Clarke in 
Journ. Linn, Soc. xxi. 100. C. radicans, Kunth Enum. ii. 95. C. Griffithii, 
Steud. Syn. Oyp. 316 ; C. B. Clarke, l. c. 101. C. macropus, Mig. Fl. Ind. 
Bat. Suppl. 260, 599 (not of Boeck.). C. sinensis, Debeaux in Act. Linn. 
Boc. Bordeauz, xxxi. 14, t. 2, and. xxxviii. 30.—Cyperus, Wall. Cat. 3371, 
B. (partly). Rynchospora, Wall. Cat. 3427. 
Maray PENINSULA. TENASSERIM, Helfer (Kew Distrib. 6209); SINGAPORE, 
allich.— DISTRIB. China, Malaya. 
Glabrous. Rhizome very short ; stolons 0. Stems frequently less than 1 in. Leaves 
much exceeding stem, 4 in. broad, rigid, not 3-nerved, often becoming brown. Rays 
of umbel always remarkably long (13 in. in Maingay, n. 1721). Spikes 3-2 in. 
m diam., sometimes globose, dense with 10-30 spikelets, sometimes in clusters 
of 2-5 spikelets, or occasionally spikelets mostly solitary pedicelled. Spikelets 4 by 
m., 6-12-fld.; rhachilla not winged. GZlumes closely imbricate, green usually 
marked with red, muticous. Wut and style much as in C. diffusus.—Ridley has 
Proved C, Grifithii to be only a form of C. radians. This unmistakable species is 
hot very closely allied to C. diffusus ; but, unless a section is made for it alone, it is 
Mot clear where it can be better arranged than at the tail of the Diffusi. 
Subgen. III. CHORISTACHYS. Infi. umbellate, spikes often more or less 
Torymbed ; spikelets (sometimes very shortly) spicate. Style-branches 
far. (Sp. 27-61.) [N.B.—There is no line of separation between this 
Subgenus and II. Pycnostachys. } 
b Series A. Rhachilla of spikelets not much winged. Leaves and bracts 
hg (except in C. malaccensis). (Sp. 27-39.) 
Sect. 1, Compressi. Annuals, or sometimes flowering the second year. 
(Sp. 27-31. 
27. C. compressus, Linn. Sp. Pl. 68; green, leaves and bracts long, 
Ze simple, spikes of 3-10 spikelets very shortly spicate, glumes boat- 
“taped keel acute excurrent, rhachilla of spikelets not winged, nut obovoid 
puse black acutely triquetrous with concave faces. Burm. Fl. Ind. 21; 
Me’ Fi. Ind. i. 194; Nees in Wight Contrib. 76; Kunth Enum. ii. 23; 
ml Fl. Ind. Bat. iii. 263 and Suppl. 260, 599; Dalz. & Gibs. Bomb. FI. 
Li ; Thw. Enum. 349; King in E. T. Atkinson Gaz. x. 320; Boeck. in 
se "ën, xxxv. 517; ©. B. Clarke in Journ. Linn. Soc. xx. 284 and xxi. 
ke Boiss, Fl. Orient. v. 372 (not of Jacq.). C. pectiniformis, Nees 
D Wight Contrib. 77 (excl. syn. Rowb.). C. Meyenii, Nees et Meyen im 
308 ct. Nat. Cur. xix. Suppl. i. 57.—C. viridis, Herb. Rowb.; Wall. Cat. 
DigaTorghout INDIA; from the Punjab and Assam to Ceylon and Singapore.— 
+ All warm countries (except Australia). 
