Cypefrus."] clxxu. ctpbbaob^. (0. B. Clarke.) 605 



heads (otherwise as 0. diffusus). Scirpus trialatus, Boech. in Linnsea, 

 xxxvi. 721.— Isolepis, Wall. Gat. 3473. 



From PiGTT to Penanq- and Malacca, frequent, Heifer (Xew Distrib. 6164), 

 &c. — DiSTKiB. S. China. 



Stems 12-20 in. Umbels 3-4 in, in diam. Spikdets usually about 6-fld. 



26. C. radians, Nees & Meyen ex Nees in Linnsea, ix. 286 (name) 

 and in Nov. Act. Nat. Our. xix. Bwppl. 1, 63 ; umbel simple or compound 

 rays longer than stem, spikelets 1-30 clustered compressed or nearly- 

 terete, glumes broad striate mucronate, nut broad ovoid | length of glume. 

 Benth. Fl. Hongh. 386 ; Boech. in Linnsea, xxxv. 515 ; C. B. Olarhe in 

 Journ. Linn. Soc. xxi. 100. C. radicans, Kunth JEnum. ii. 95. C. Grrifl&thii, 

 Steud. 8yn. Gyp. 316 ; C. B. Clarice, I. c. 101. 0. macropus, Mig. Fl. Ind. 

 Bat. Swppl. 260, 699 (not of Boech.). 0. sinensis, Debeaux. in Act. Linn. 

 Soc. Bordeaux, xxxi. 14, t. 2, and sacxviii. 30. — Cyperus, Wall. Cat. 3371, 

 B. (partly). Eynchospora, Wall. Gat. 3427. 



Malay Peninsula. Tenassbkim, Heifer (Kew Distrib. 6209); Sinoapoee, 

 Wallich. — DisTEiB. China, Malaya. 



Glabrous. Mhizonie very short ; stolons 0. Stems frequently less than 1 in. Leaves 

 much exceeding stem, J in. broad, rigid, not 3-nerved, often becoming brown. Rays 

 of wmbel always remarkably long (13 in. in Maingay, n. 1721). Spikes %-^ in. 

 in diam., sometimes globose, dense with 10-30 spikelets, sometimes in clusters 

 of 2-5 spikelets, or occasionally spikelets mostly solitary pedicelled. Spikelets J by 

 A in., 6-12-fld. ; rbachilla not winged. Glumes closely imbricate, green usually 

 marked with red, muticous. Nut and style much as in C. diffusus.^RiS\ej has 

 proved 0. Griffithii to be only a form of 0. radians. This unmistakable species is 

 not very closely allied to 0. diffusus ; but, unless a section is made for it alone, it is 

 not clear where it can be better arranged than at the tail of the Diffusi. 



Subgen. III. Chokistachys. Lift, umbellate, spikes often more or less 

 corymbed; spikelets (sometimes very_ shortly) spioate. Style-branches 

 linear. (Sp. 27-61.) [N.B. — There is no line of separation between this 

 subgenus and .II. Pycnostachys.'] 



Series A. Ehaohilla of spikelets not much winged. Leaves and bracts 

 long (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. PI. 68 ; green, leaves and bracts long, 

 umbel simple, spikes of 3-10 spikelets very shortly spicate, glumes boat- 

 shaped keel acute excurrent, rhachilla of spikelets not winged, nut obovoid 

 obtuse black acutely triquetrous with concave faces. Burm. Fl. hid. 21 ; 

 Boxh. Fl. Ind. i. 194 ; Nees in Wight Gontrib. 76 ; Kimth Fnum. ii. 23 ; 

 Mig. Fl. Ind. Bat. iii. 263 and Swppl. 260, 599 ; Balz. & Oils. Bomb. Fl. 

 282 ; Thu). Fnum. 342 ; King in E. T. Atkinson Gaz. x. 320 ; Boeek. in 

 Linnsea, xxxv. 617 ; 0. B. ClarTee in Jov/rn. Lirm. Soc. xx. 284 and xxi. 

 97; Boiss. Fl. Orient, v. 372 (not of Jacq.). 0. pectiniformis, Nees 

 in Wight Gontrib. 77 (excl. syn. Boxb.). C. Meyenii, Nees et Meyenin 

 Nov. Act. Nat. Cur. xix. Suppl. i. 57. — C. viridis, Serb. Boxh. ; Wall. Cat. 

 3308. 



Throughout India; from the Punjab and Assam to Ceylon and Singapore. — 

 DisiBlB. All warm countries (except Australia). 



