278 



oblong, 5-nerved, lateral ones dimidiate-cordate-oyate, 6-nerved : 

 ipetioles slightly -villous, petiolets rusty-hirsute : male spites axillary, 

 Bolitaiy, simply composite, villous tomentose : inner segments of tie 

 perianth, round ovate, aoutish, outer ones 4 times shorter^ 



Malabar.. 



(4) H. TOMENTOBA. ( Ekvith.)' 



t. Kunth 1.. 0. p. 439. 



Syn.. Dioscorea tomjentosa, Roxb.fior. Ind. IIL 805. 



Bngram. "Wight's Icon. t. 815. 



Spec. Chae. HerT)aeeou8 : tubers irregularly oblong : steraa 

 twining, tomentose, slightly armed : leaves alternate, tematey 

 tomentose: male racemes axOlaiy, composite: flowers, tomentose,. 

 3-braoteate at the base. 



Circar mountains. Travaocore. 



OEDER CLIX. ALISMACEiE. 



Flowers hermaplirodite or monoecious: calyx fi-sepalled, 

 regular, much spreading : sepals distinct, outer ones calyeine> 

 persistent, inner ones larger, petaloid, withering, deciduous : 

 stamens 6 — 9 — 12 or indefinite, hypogynous, free : filaments, 

 filiform : anthers 2-celled, more or less extrorse, cells parallel,, 

 dehiscing lengthways : ovaries numerous, 1 -celled, 1-, seldom 

 2-ovuled, arranged in a circle or heaped together in heads, 

 distinct, seldom eonnate- at the base, ovules campylotropal : 

 styles as many as the ovaries, eontinuous, distinct, persistent : 

 stigma& simple; carpels as many as the ervaries, 1-celled, 

 l-seeded, indehiscent : seeds uncinately reflexed : testa simple, 

 thim, membranaceous : embryo exalbuminous : radicle inferior, 

 next the hilum. — Marshy or aquatic herbs, gl_abrous, generally 

 stemless : root fasciculately fibrous : leaves petioled, nerved, 

 primary ones sometimes grassy and sessile (phyllodia): petiole 

 sheathing at the base : flowers long-pedicelled, verticillately 

 racemose or panicled, bracteate, white,, seldom reddish. 



