279 



GENUS I. SAGITTARIA. 

 Monceola Enneandrla. Sexi Sgst^ 



Deriv. Prom Sagitta an arrow, referring to a resemblance in the 

 leaves. 



Gen. Chas; Flowers monoecious: sepals six, outer ones caly- 

 cine, persistent, inner ' ones larger, petaloid, deciduous, sestivation 

 imbricated r stamens bypogypous, free : anthers 2-ceUed, sub- 

 extrorse, eUiptic-oblong, emarginate, 2-lobed at the base and there 

 ifixed ; cells joined together by a narrow conneetivum : ovaries 

 lieaped together in heads above a globose receptacle, distinct, com- 

 pressed at the sides, 1 -celled,- 1-ovuled: oviile affixed to the base of 

 the cell, erect, campylotropal: styles. as maay as the ovaries: 

 stigmas obtuse, papillose, carpels shortly beaked with the persistent 

 ■ style : membranaceous, l-seeded, indehiscent : seed basilar, erect, 

 uncinately plaited, testa membranaceous, very thin : embryo «x- 

 albuminoTis : radicle inferior, — Marshy and aq[uatie herbs, generally 

 stemless: leaves petioled, most usually sagittate or hastate: scapes 

 many flowered, simple, very rarely paniculately branched : flowers 

 pedicelled, verticiliately racemose, white, verticils bracteated, lower 

 ones female, upper ones male. 



(1) S. siQimroLiA. (Linn.) 



Ident ■ Eoxb. flor, Ind. III. p. 645.— Spreng. Syst. II. 632. 



, Engrm). Engl. Boi II. t. 84. 



Spec. Chae. Leaves deeply sagittate, acute, basilar lobes acumi- 

 nate, straight : scape simple, flowers pure white vrith a purplish 

 base. 



f eninsula, flowering &oia February to ApriL 



(2) S. coEDiPoiiiA. fRoxb.j 

 Ident. Eoxb. 1. c. p. 647. 



Spec. Chab. Leaves very long petioled, ovate, deeply cordate, 

 rounded at the apex, finger-nerved, basilar lobes acutish, spreading: 

 ficape simple, very long, racemosely 5 — 8-flowered at the top, flowers 

 verticilled by threes, hermaphrodite, 9 — 12-androus, males inter- 

 mixed, carpels obliquely obovate, girt with a toothed margin, 

 marked on each side with a promiuent arched line : flowers small, 

 white. 



Silhet. Assam. Coromandel. In tanks near Calcutta. Flowering 

 in the rainy season. 



