



OCTANDRIA. TRIGYNIA. Polygonum. 



* Leaves of a pleasant green, oblong-spear-shaped, glossy, sur* 

 rounded at the very edge with a reddish line; the younger very 



~ * * " Flowers red. 



373 



minutely serrated. 



Perennial JVM 



'weed. Pools, lakes, marshes, and ditches. 



Narrow-leaved Pond 



J 



Var. 2. terrestre. Leers. Stem upright : leases somewhat 

 pointed, rough : stamens about as long as the blossom. 



Curt. 223-Pet. 3. 12. a. 



* 



Leaves darker green. 



Amphibious Snakeweed. In cultivated ground, but very sel- 

 dom flowering, except in spots where water has settled. [On the 

 side of a piece of water, the flowering stem growing on the 

 land, and other branches from the same root floating in the 



water. 



] 





P. Sept 





(2) Flowers with 6 stamens: capsule of 



P. Flowers with cloven pistils : stipuke somewhat fringed : Hydropi'per 



leaves spear-shaped. 



Curt. -Black™. l\9~Fuchu 843-?. B. iii. 7$0-Pa. 3.5- 



Matth. 5 S3. 



■ * 



The leaf-scale sheaths tight round the stem, lopped, ripped, 

 the ribs terminating in bristles forming a fringe. Leaves very 

 thin, smooth on each side, edge very entire, but serrated as it 

 were with bristles laid to the edge, and scarcely perceptible. 



Linn. 





Leaves spear-shaped, waved, not spotted, 

 slender, nodding. Curt. 



Mr. Woodward. 



Spikes very 



Spikes drooping, even before flower- 

 ing. Mr. Woodward. Whole plant sprinkled with minute 

 glandular dots, but even with the surface, and more obvious with 

 a moderate than a higher magnifying lens, probably the seat of 

 its very acrid property: Spikes long, slender, pendent. Flowers 

 green, red towards the end. St. 



Water Pepper. Arsmart. Lakeweed. Biting Snakeweed. 



Watery places, on the sides of rivulets, lakes, and ditches. 



A. July — Sept. 



P. Flowers with slightly cloven pistils: leaves strap-spear 



shaped : stem creeping at the base. 



- mi'nus. 



* The whole plant has an acrid, burning taste. It cures little apthous 

 Ulcers in the mouth. It dyes wool yellow. The ashes of this plant, 

 ftiixed with soft soap, is a nostrum in a few hands, for dissolving the btone 

 *n the bladder : but it may be reasonably questioned whether it has any 

 advantage over other semi-caustic preparations of the vegetable Aicati. 

 * ts acrimony rises in distillation, and the distilled water drank to the 

 amount of 2 or 3 half pints daily, has been found very effectual in some 

 Nephritic cases. Horses, cows, goats, sheep and swine refuse it. 



