$26 POLYANDRIA.— POLYGYNIA. 



HAB. Borders of lakes, &c. July. V. Stem 2— 

 3 ft. high, succul. ; fl. large, yellow. 



3. R. Flammula : leaves smooth, linear-lanceolate, or 



subovate, nearly entire, the lower oues petiolate ; 

 stem more or less decumbent, rooting ; peduncles 

 opposite to the leaves. 

 HAB. Swamps. June— July. Ifi. Stem 12—18 

 in. high, succul. ; fl. smaller than No. 2. 



4. R. pusillus : leaves all on long petioles ; the inferior 



ones ovate, subdentate ; superior linear-lanceolate ; 

 stems numerous, erect ; petals mostly 3, as long as 

 the calyx. 

 HAB. Wet places. July. H. A span high; rad, 

 leav. cord. ; fl. minute. 



5. R. Cymbalaria : radical leaves petiolate, smooth; 



somewhat fleshy, cordate-reniform, coarsely cre- 

 nate ; scapes naked, elongated, 1 — 4-flowered ; pe- 

 tals linear, as long as the calyx. 

 HAB. Salt marshes. July — Aug. If. Scapes 2 — 

 6 in. high, often stolonif. ; fl. sm. ; fr. oblong. 



6. R. reptans : /3. flliformis : leaves linear-subulate ; 



stems filiform,, creeping, geniculate ; joints 1» 

 flowered. 

 HAB. River banks. July — Aug. If.. Stems 6— * 

 10 in. long ; fl. small ; fr. very smooth. 



It- Leaves divided. 



7. R. abortivus : leaves smooth ; radical ones petiolate, 

 cordate-orbicular, crenate ; stem leaves ternate 

 and 3-cleft, with linear segments ; calyx smooth, a 

 little longer than the petals. 

 HAB. Rocky woods. April — June. If. A foot 

 high ; fl. small ; fr. ovate, compress. 



3. R. sceleratus : leaves smooth ; radical ones petio- 

 late, 3-parted ; divisions 3-lobed, obtuse, subin- 

 cised ; superior 3-parted, with oblong-linear entire 

 lobes ; calyx pubescent ; fruit linear-oblong. 

 HAB. Ditches, &c. May— Aug. If.. Afoot high., 

 much branch. ; stem succul. ; fl. small. 



