360 CYPERACEZ. [ ScrrPus. 
Perennial. roots fibrous, rhizome short, horizontal. Stems 8-30 in. 
high, tufted, sharply triquetrous, 34-3} in. thick, sheaths loose, mem- 
branous, mouth oblique. Spikelets 4-2 in. long in a single lateral 
cluster of 1-12 close below the top of the stem. Glumes 3 in. long, 
broadly ovate, acute, keeled, finely multistriate. Bristles 5-6, retror- 
sely scabrid. Style 3-fid. Nut ~ in. long, broadly obovate in 
outline, apiculate, unequally trigonous or biconvex, dark brown, 
shining, nearly smooth. 
Dehra Dun (Parker), Saharanpur (Royle), Agra (Jameson), Pilibhit, 
Kheri (Inayat), Génda (Harsukh), Gorakhpur (Harsukh). Distr. 
Northern India, Europe, Australia, Madagascar. 
8. S. articulatus, Linn. Sp. Pl. (1753), 47; F. B. I. vi, 656; 
Prain, Beng. Pl. 1160; Cooke, Fl. Bomb. “i, 891. 
Roots fibrous, Stems 6-24 in. high, terete, tufted, when dried and 
pressed flat ;4-3 in. wide, septate, sheaths loose, membranous, very 
oblique at the mouth, the apex sometimes free from the stem for 
about 1 in. but with no blade. Spikelets 3-4 in. long, brown, in a 
single dense lateral head situated below the middle of the stem and 
often close to the base. Glumes 3-2 in. long, ovate, acute, mem- 
branous, not or obscurely keeled. SBristles 0. Style 3-fid. Nut 
7; in. long, obovoid, acutely triquetrous, apiculate, faces trans- 
versely undulate-rugose, black. 
Margins of ponds. Kheri (Inayat), Dholpur (Jameson), Bundelkhand 
(Duthie), Ajmer (Lowrie). Distris. Warm regions of the old 
world. 
4, S. supinus, Linn. Sp. Pl. (1753), 49; F. B. I. vi, 655 ; Prain, 
Beng. Pl. 1160; Cooke, Fl. Bomb. ti, 892. , 
Roots fibrous. Stems 4-15 in. high, terete, tufted, sheaths with an 
obligue mouth sometimes produced in a short erect blade. Spike- 
lets 1-8, usually about 3-4 in a single lateral cluster or occasionally 
a cluster on a ray in addition, situated a little below the apex of 
the stem, }-} in. long. Glumes =, in. long, ovate, keeled, the keel 
produced as a suberect mucro. SGrisiles 0. Style 3-fid. Nut >; in. 
long, globosely obovoid, trigonous, one face larger than the other 
two, minutely apiculate, faces transversely undulate-rugose, black. 
Dehra Dun (Gamble, Parker), Saharanpur (Royle), Shahjahanpur, 
(Duthie), Jhansi (Duthie), Bundelkhand (Duthie). A common weed 
in rice fields. Distris. Most parts of the world. 
