LENTIBULACE^E. (BLADDERWORT FAMILY.) 283 



the upper one concave, striate in the middle, the lower with rcflcxed margins, 

 as long as the linear nearly appressed notched spur ; palate dotted with brown ; 

 fruit erect. (U. fibrosa, Ell.) Still water, Florida, and northward. Sept. - 

 Scapes 10' high. Corolla ' wide. 



4. U. fibrosa, Walt. Small; leaves short, sparingly divided, root-like; 

 scape 1-3- (mostly 2-) flowered, almost bractless ; lips of the small (4" -5") 

 corolla equal, roundish ; the upper one slightly 3-lobed ; the lower entire, rather 

 shorter than the subulate appressed spur ; palate globose, 2-lobed ; fruit erect>. 

 on stout pedicels. (U. longirostris, Leconte. U. biflora, Lam.l) Ponds, 

 Florida to South Carolina. May and June. Stem 4' 6' long, with clus- 

 tered branches. Scape 2' - 4' high. 



5. U. gibba, L. Stem short, with clustered branches; leaves sparingly 

 divided ; scape 1 - 2-flowered ; lips of the corolla nearly equal, longer than the 

 gibbous obtuse appressed spur; fruit erect. (U. fornicata, Leconte.) Shallow 

 ponds, South Carolina, Elliott, and northward. June. Stem 2' - 3' long. 

 Scape l'-3' high. 



* * * Stem floating : leaves whorled, finely dissected : flowers purple. 



6. U. purpurea, Walt. Stem long, filiform ; scape mostly 1 -flowered ; 

 npper lip of the corolla truncated; the lower 3-lobed, with the lateral lobes 

 sac-like, longer than the subulate spur. Shallow ponds, Florida to Missis- 

 sippi, and northward. June. Stem l-2 long. Scape 2' -3' high. Co- 

 rolla 4" wide. 



* * * # Stemless : scape rooting, scaly : leaves linear and entire, or none : air- 

 bladders few or none : flowers yellow. 



7. U. COmuta, Michx. Scape 2 - 4-flowered ; pedicels short, as long as the 

 calyx ; lips of the large (|' wide) corolla obovate, unequal ; the lower one larger, 

 abruptly pointed, entire, as long as the horn-shaped acute depending spur, the 

 margins strongly reflexed. (U. personata, Leconte, the more numerous (4-12) 

 and scattered flowers much smaller.) Swamps, Florida, and northward. July - 

 Sept. Scape 1 high. 



8. U. SUbulata, L. Scape setaceous, 3 - 9-flowered ; pedicels much longer 

 than the calyx ; lower lip of the small (3" -4") corolla 3-lobed, longer than the 

 appressed conical green-pointed spur; leaves, when present, linear, fugacious. 

 (U. setacea, Michx.) Wet sandy pine barrens, Florida to North Carolina, and 

 westward. Feb. - May. Scape 2' - 8' high. 



9. U. bipartita, Ell.? Scape filiform, 1-3-flowered; pedicels long and 

 slender ; upper lip of the corolla slightly 3-lobed ; the lower entire, as long as 

 the conical obtuse spur ; lower lip of the calyx sometimes 2-cleft ; fruit erect. 

 Miry margins of ponds near Tallahassee, Florida, to South Carolina. Sept. 

 Scape 4' - 6' high. Corolla 6" - 8" wide. 



2. PINGUICULA, Tourn. BUTTERWORT. 



Upper lip of the calyx 3-lobed, the lower 2-lobed. Corolla somewhat 

 2-lipped ; the upper lip 2-lobed ; the lower 3-lobed. spurred at the base : 



