THE CYPERACE^K OF THE BOMBAY PRESIDENCY. i)87 



-. C. platystylis, l^r. Stolon iferous, floating in tanks. Lealy, 

 stems strong, 2-o ft. Leaves broad, scabrid, cutting the hand. 

 Umbel broader than long, compound. Bracts long, leafy. Spikelets 

 numerous, digitate on the rays, elongate, flattened, linear, 

 parallel-sided, 20 — 40-flo\vered, brown. Nut triquetrous (or trigo- 

 nous) one side much broader than the others, angles whitish. 



V. rare. Tank near the Dovimana ghat, N. Kanara (H. Agr. Coll.), 

 (Indo-Malayau^. 



Sub-(;eniuII (PYCRECS). Nut laterally compressed— Stigmas 'I. 



Key to the subgenus:- — 



A. — Superficial cells of the nut lonyitudinallif elonyate. Ripe nuts usually 

 appearing irrer/ularli/ zonate bij the short sides of the cells runninr/ into v 

 iracy line. 



{Note. — The species of this section are very imperfectly characterized.) 

 1. Nut black, narrowly obo void, subacute, 



not much compressed, the transverse* 



ridges prominent, glistening white ., :5. C. /tavescens. 

 'J. Nut black, broadly obovoid, obtuse, 



rather compressed, the transverse ridges 



distinct, not white , . . . . . 4. C. latespicatw. 



■i. Nut black, quite coucolorous, almost 



completely rotund, very compressed, 



the transverse ridges rather obscure . . o. C Malabaricu.<. 

 B. — Superjicial cells of the 7iut quadrate. Ripe nuts not zonate. 



1. Spikelets short, broad, | in, redish . . 6. C. sanyuinoleni ua . 



2. Spikelets elongate, many-flowered, 

 with parallel sides, ^ in, stem robust, 



1-:^ ft. . . . . . . . . . . 7. C. puncticulatii-1. 



•i. Spikelets gradually attenuated from 



base to tip, glumes lax, yellow, with 



prominent white margin . . . . 6. C albomarginatvx. 



4. Spikelets elongate (as 2) but stems 



slender, tufted, 8-18 inches . . . . 9. C. globosus. 



-■). Spikelets narrow, pale, in contracted 



umbels ; perennial, maritime . . . . 10. C odoratus. 



6. Small and slender; spikelets few- 

 flowered with hump-backed glumes 

 with strong raised, curving nerves on 



the sides .. .. .. .. . . 11. '''. hyalinus. 



7. Small and slender, spikelets many- 

 flowered, elongate, parallel-sided, with 



normal glumes . . . . . . VI. C. pumilus. 



o. C. flavescens, Linn. P. Jlavescens, Nees ; and incl. I\ 

 f-tramiiieus Cke. Annual, slender, 1-12 inches. Umbel simple, small, 

 with few short slender rays and few rather short spikelets ^ x y„ 

 inch, compressed, dark with rather light margins all round the 

 glumes. Nuts as clavis. 



Besides material from Mt. Abu there is one specimen from Maval, Poena 

 Dist. in Herb. St. X. Coll. The plant is liable to be passed over as re- 

 sembling poor forms of C. ylobosus and C Malabaricus. 



I cannot from descriptions in F. B. I. distinguished Clarke's P. strami- 

 neus The colour of the spikelets of the Abu and Maval specimens is darker 



