714 



DIOECIA ENNEANDRIA. 



Foeminei. Spatha 

 monophylla, uniflora. 



Qahjx 3-phylIus. Co- 

 rolla 3-petala. Qlan- 

 dulce 6, inter petala. 



Germen infer urn. Sty- 

 li 



, bifid i. Capsula 



6-Iocularis, polysper- 

 ma. 



Fertile Jlorets, 



Spat he 



l-leaved, 



1 



flowered. Calyx 3- 

 leaved. Corolla 3-pe- 

 talled, with 6 glands 



petals. 



Styles 



between 



the 



Qerm inferior. 



, 2-cIeft. Capsule 6- 

 celled, many seeded. 



1. Spongiosa. 



H. 



raonoica; 



Bqgc. 



foliis 



■ 



Monoecious; leaves 



floating, 



5 



round, cor- 



natantibus, roiundato- 



cordatis, subtus retieu- | date, reticulate under 



neath, with vesicles at 



latis, basi vesiculosis. 



base. 



Bosc. Annales du Museum, 9. p. 396. 

 H. Cordifolia, Nutt. 2. p. 241 



/ 



Since I have become acquainted with the different views which have been 

 aken of this plant, I have had no opportunity of examining it in a living 



I shall, therefore, merely insert the notes I took of it many years 



* t 



taken 

 state. 



Root perennial, sarmentose. Leaves from the root, floating, orbicular, 

 cordate, glabrous, 1—2 inches in diameter, with prominent purple veins 

 underneath, and some inflated vesicles near the summit of the stem. Peti- 

 oles 2—4 inches long. Flowers axillary, mqnoecious. Sterile florets: 

 Spathe — leaved, — flowered; leaves membranaceous, hyaline, nerwd. 

 Calyx 3-Ieaved, leaves oval, membranaceous, without nerves, green. Co- 

 rolla white, 3-petall*d, petals as long as the calyx, but narrower, peduncle 

 longer than the sheath, hyaline; filaments generally 12, united at base; the 

 interior ones abortive; anthers attached to the side's of the filaments. Fer- 

 tile florets:— 5^afAe one-leaved, one-flowered, peduncle of the flower very 

 short, of the fruit long deflected. Calyx and corolla like those of the ste- 

 rile floret. Glands 6 very small, setaceous, inserted by pairs between the 

 petals. Germ inferior, ovate, truncate. Styles 6, as long as the corolla, 

 -deeply 2-deft, furrowed on the interior surface. Stigmas srmple, spotted. 

 Capsule striate, 6-celled. Seeds numerous, striate, (hirsute. Nuttall.) 



urows m stagnant watei 

 Flowers July— September. 



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