MONOPETALOUS EXOGENOUS PLANTS. 383 



sparingly branched, naked above ; leaves spatulate-obovate ; 

 pedicels bractless; racemes few-flowered; capsule ^\\ovtQX 

 than the calyx ; flotvers conspicuous. Saline marshes. 



81. BLADDERWORT FAMILY. Order, LENTiBULACEyE. 



Aquatic or marsh herbs, with showy bilabiate /oz^er^ on 

 scapes; corolla irregular, bilabiate, personate spurred; 

 cali/x 2-lipped, inferior; starnens 2, inserted on the upper 

 lip of corolla; anther 1-celled; ovary 1-ceIled; style 1; 

 mjt?S2<7e many-seeded ; seeds minute; embryo straight and 

 thick; albumen none. 



UTRICULARIA, L. Bladderw6rt. 



Lips of the calyx entire; throat of the corolla nearly 

 closed by the projecting palate ; the lips entire or slightly 

 lobed, the lower one with an appressed or depending spur 

 at the base. — Herbs, floating in still water by means of 

 small air-bladders attached to the finely dissected leaves 

 (or roots), or rooting in damp earth, with entire leaves, and 

 few or no air-bladders ; scapes or peduncles 1-many-flow- 

 ered. 



* stem floating; upper leaves whorled, on inflated petioles, the others scattered and 

 finely dissected ; flowers yellow. 



U. INFLATA, Walt. Scape 5-10-flowered ; corolla large 

 (}' wide) ; the lower lip 3-lobed, twice as long as the ap- 

 pressed conical notched spur, the upper concave, neai'ly 

 entire ;/nnY nodding. — Var., minor. Every way smaller; 

 scape 2-flowered. Ponds and ditches. Stem 2° long; scape 

 6'-12' high. 



♦* stems floating ; leaves all scattei'ed and finely dissected ; fimoers yeUow. 



IT. VULGARIS, L. Leaves decompound ; scape scaly, 5-12- 

 flowered; throat of the corolla closed by the prominent 

 palate ; the lobes nearly entire, with reflexed margins, longer 

 than the conical obtuse somewhat spreading spur ; fruit 

 nodding. Ponds and still water. Stem 2°-3° long ; scapes 

 6-12' high ; corolla ^' wide. 



