282 LENTIBULACEJL (liLADDERWORT FAMILY.) 



1. S. floribundus, Kunth. Stem at length much branched ; leaves obo- 

 rate, the lowest tufted, spreading, the others scattered ; racemes many-flowered; 



pedicels long, filiform, minutely braeted in the middle; capsule globose, longer 

 than the calyx ; Mowers minute. — Brackish marshes, Florida to Mississippi, 



and northward. May- July. (2) — Plant 6'- 12' high, pale green. 



2. S. ebracteatUS, Kunth. Stem simple or sparingly branched, naked 

 above ; leaves spatulate-ohovate ; racemes few-flowered ; pedicels brnctless ; 

 capsule shorter than the calyx ; flowers conspicuous. — Saline marshes, Florida, 

 and westward. May and June. — Stein l°-2° high. 



Order 88. LENTIBULACE;!:. (Bladderwort Family.) 



Aquatic or marsh herbs, with entire or dissected leaves, and irregular 

 flowers. — Calyx 2-lipped. Corolla 2-lipped, personate, spurred at the 

 base. Stamens *2, short, included : anthers 1 -celled. Ovary free, ovoid, 

 1-celled. Ovules numerous, anatropous, inserted on the tree central 

 globose placenta. Style short : stigma 2-lipped, the lower lip larger and 

 covering the anthers. Capsule globose, many-seeded, opening irregularly. 

 Embryo straight and thick. Albumen none. 



1. UTRICULARIA, L. Blaodtcuwout. 



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 ap- 

 praised or depending spur at the base. — Herbs, floating jn still water by means 

 of small air-bladders attached to the finely dissected leaves (or roots), or rooting 

 in dam]) earth, with entire leaves, and few or no air-bladders. Scapes or pe- 

 duncles 1 -many-flowered. 



* Stem floating: upper haves whorled, on inflated petioles; the others scattered and 

 finely dissected : flowers yellow. 



1. U. inflata, Walt. Scape 5-10-flowered; corolla large (| r wide); the 

 lower lip 3-lobed, twice as long as the appressed conical notched spur, the upper 

 concave, nearly entire; fruit nodding. — Var. minor. Every way smaller; 

 scape 2-flowered. — Ponds and ditches, Florida to North Carolina, and west- 

 ward. April and May. — Stem 2° long. Scape 6'- 12' bigh. 



* * Stem floating : leave* all scattered and finely dissected: flowers yellow. 



2. U. Vulgaris, L. Leaves decompound ; scape scaly, 5 - 12-flowcred ; 



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, Mississippi to North Carolina, 

 and northward. May-July. — Stem 2°-8° long. Scapes 6'- 12' high. Co- 

 rolla V wide. 



8. U. striata, Leconte. Leaves decompound ; scape slender, sparingly 

 braeted, 5 - G-tlowered ; lips of the long-pedieelled corjlla nearly equal, ,'Mobcd ; 



