B.IANDRIA. MONOGYNIA. 13 



20. PINGUICULx\. L, (Butter-wort.) 



Calix bilabiate, upper lip trifid, lower bifid. 

 Corolla irregular, calcarate at the base, limb 



cies; described by Mr. E. as producing- a scape 6-8 inches long", 

 beaming 2 to 3 large yellow flowers. The upper lip large, 

 rounded, and obscure ly'S-lobed, the lower lip smaller, about 

 tiie length of the spur,'which is said to be subulate (or as some 

 would perhaps say conic) and emarginate. From all which we 

 may, I think, here perceive a plant not very widely distinct 

 from the U. vulgaris of Pursh and others, considered as equally 

 indigenous, like many otlier aquatics, to the two centinents of 

 Europe and North America. 



3. Longirostrisi of Mr. Le Conte. Floating; scapes 1, 2 (or 

 3) flowered, the spur a little longer than the lower lip, (some- 

 what compressed) ascending and emarglnate. Flowers yellow, 

 labiae obscurely 3-lobed, scape 3 to 4 inches long. This species 

 also approaches to the U. vulgaris, but is a much smaller plant, 

 with the flowers rather large. 



4. purpurea. Walter, U. saccafa of Le Conte. 



Scapes 1, 2, or 3 flowered; lower lip of the corolla 3-lobed, 

 lateral lobes cucullate on the under side; palate large and pro- 

 minent; nectary compressed, a little acuminated, clojrely appres- 

 sod to the resupinate corolla and entirely covered by its reflected 

 margins; upper hp nea; ly round. 



Floating stem 2 or 3 feet long, utricuhte leaves digitate, ses- 

 sile, segments pinnatifidand setaceous; scapes axillary, 1 or 2 to- 

 gether. Flower about ilie size of U. vulgaris, violet-purple; calix 

 persistent. Grows in tlie ponds upontiie Blue-ridge, in the state 

 of New-York, and on the Broad mountain, Pensylvania In 1809 

 I collected it in a pond near to Lewistown, Sussex county, 

 Delaware, from whence it appears to extend as far south as Ca- 

 rolina and Georgia. 



5. Gibba floating. 



6. Bipartita. Elliott. Taking root on the margins of ponds. Co- 

 rolla nearly entire; spur short, scarcely half as long as the corolla, 

 very obtuse. Lower di\ision of the calix biJU. 



7. bijlora- La Marck. Floatmg; scape about 2-flo\veped, corolla 

 entire, spur subulate, obtuse, as long as the lower lip. Le Conte. 



(Jbs. TflA/ (iesrribes the nectary as straight, nearly equalling 

 the upper lip, and with setaceous leaves. South Carolina. 



8. Personata. Le Conte. 



Flowers sinall, m a long setaceous raceme (1 to 2 feet high, 

 4—10 flowered) furnished With small scaly bractes; upper Up of 

 C 



