283 



sharply denticulate, waved and crisp on the margin, membranous, 

 pellucid : frtiit obliquely and broadly ovate, terminated by a slightly 

 recurved, compressed and subulate peak : flowers green. 



Tanks in the Concans. Oudh. Bengal. Flowering in February 

 and March. 



(3) P. PECxrNAiUM. (Linn.) 



Jdent. Linn. sp. 183. — Kunth, 1. c. p. 137. - 



8yn. P. marinum, Zw». — P. flliformis, Pers. syn. — P. VaiUantii, 

 Roem et Shult. — P. tenuifolius, Swrnh. et Kunth. 



?r<w. .Engli Bot.t.. 323.— Flor. Dan. t. 1746. . 



Spec. Chae. Stem round : aU. the leaves submersed, extremely 

 narrow, half-round and channelled, divided into, tubular compart- 

 ments, having sheaths at the base : spikes long-peduncled, inter- 

 rupted : peduncles thread-like. 



Plentiful in the large tank at Gogo. 



(4) P. iNDtCTTM, fRoxh.J 



Idmt. Koxb. fl. Ind. I. p. 452. — Don. prod. xxi. — Dalz. Bomb, 

 flor. p. 248. 



Syn. P. Roxburghianus, SckuU. Mmt. III. p. 367. 



Spec. Chae. Stem branched, creeping, round, smooth, knotty : 

 leaves alternate, floral ones opposite, petioled, narrow-lanceolate or 

 elliptic-oval, shining, smooth, entire: stipules solitary, axillary, 

 sheathing as long as the petioles, divided to the middle : peduncles, 

 solitary, axillary or opposite the leaves, round, thick, smooth, about 

 as long as the cyUndric spike : sepals with long claws, roundish, 

 concave, persistent : flowers small, green. 



Common in tanks and lakes. "Waterholes of the high bill forts of 

 the Western Deccan. Oudh. Flowering. in February and March. 



GEITOS in. SPATHITJM. 

 Hexantlria Vetra^ynla. Sex: Syst: 



Deriv. From Spatha, a spathe, the flowers are enclosed in a 

 spathe. 



Gen. Chak. Flowers densely sessile on an angular peduncled 

 gpadix, surrounded by a 1 -leaved, coloured, caducous involucre, 

 each with twin collateral coloured bracts : perianth none : stamens 

 6, hjrpogynous : filaments free, subulate, patent : anthers with oppo- 

 site cells, contiguous : ovary 3 — 4-ceUed, 3 — 4-beaked, beaks erect, 

 stigmatose within: ovules 2 — 4 ascending fi-om the base of the 



