392 LXXXVII. OROBANCHACE^E. OROBANCHE. 



lateral lobes appressed, lower lip entire ; spur incurved, conical, obtuse, appressed 

 to the" lower lip. Stagnant waters, N. Y. to Ohio, Clark! S. toGa. The plant 

 appears to be leafless, unless the hair-like lateral branches be considered leaves. 

 Utricles very small. Scapes 3 5' high, filiform, dividing near the top, with a 

 very minute bracteole at the ibrk. Flowers yellow. 



7. U. PURPUREA. Walt. Purple-floivered Bladdcrwort. 



St. long, floating, branched; Ivs. submersed, fibrillose, verticillate, pin- 

 nately dissected, segments capillary, utriculate ; scape assurgent, 2 3-flowered ; 

 upper lip roundish-truncate, lower lip larger, its lateral lobes cucullate, smaller 

 than the central; spur conical, flattened, appressed to and shorter than the upper 

 lip. Pools, Mass. ! to Flor. W. to Wis. Readily known by the large, bright 

 purple flowers. Stem 1 3f long. Leaves about 1J' long. Utricles small. 

 Scape 3 5' high. Corolla 8" broad, the spur 3", greenish. Aug. 

 Roots fixed in the mud or earth. Leaves simple, linear, with few utricles. 



8. U. RESUPINATA. Green. (U. Greenii. Oakes.) 



Sts. creeping, fibrillose, rooting; Ivs. linear-capillary, erect, undivided and 

 entire ; scapes numerous, simple, 1-flowered, with a minute clasping bract near 

 the top ; spur obtuse, cylindric, ascending, shorter than the elongated tube of the 

 corolla. Muddy shores of ponds, Tewksbury, (Green,) Plymouth and Uxbridge, 

 Mass., Bobbins! Leaves generally numerous, 6 15'' high, the bract 1' below 

 the flower. Corolla light purple, 4" long, lips roundish, entire, remote from 

 the spur. Jl. 



9. U. SUBTJLATA. (U. setacea. Michx.) 



St. fibril] ose, creeping, rooting, utriculate; Ivs. few and minute, among 

 the fibrillose roots, entire, linear, petiolate, glandular-obtuse, sometimes 1 

 scapes few, filiform, 1 5-flowered; bracts ovate, clasping; pedicels 4 5 times 

 longer than the ovate, obtuse, veined sepals ; cor. upper lip ovate, entire, lower 

 3-lobed; spur acute, appressed to and nearly equaling the lower lip. A minute 

 species, in swamps and ditches, Can., Mass. ! to Flor. and La. Scapes 2 4' 

 high. Leaves 23" by i". Flowers yellow, 34" broad. Jn. 



10. U. CORNUTA. Michx. Horned Bladderwort. 



Scape rooting, rigidly erect, scaly, with about 2 sessile flowers ; spur subu- 

 late, acute, longer than the corolla. % Native of damp, boggy soils, but never 

 floating, growing abundant in its localities, Can. to Mass, and Mich. Scape 

 8 12' high, leafless, but furnished with a few small, distant, pale, ovate scales, 

 and bearing at the top 2 3 large, yellow flowers issuing from between bracts. 

 The calyx consists of 2, ovate, colored leaves. Lower lip of the corolla much 

 larger than the upper, broad, deflexed, emarginate ; spur rigid, 'acute twice the 

 length of the calyx. Jl. Aug. 



11. U. PRSONATA. Le Conte. Snap-dragon Bladderwort. 



St. strict, simple : roots few ; Ivs. ; fls. ^2 10 ; pedicels shorter than the 

 acute lobes of the calyx; cor. uppet lip oblong, obovate, emarginate ; palate very 

 large; spur, linear-subulate, subacute, dependent, as long as the rest of the 

 corolla. Bogs, N. Eng. to Flor. Resembles the last, but distinguishable by its 

 more numerous and smaller flowers, acute sepals, emarginate upper lip, and the 

 more slender and acute spur of the yellow corolla. Stem or scape 10 18' high. 



ORDER LXXXVII. OROBANCHACEJ3. BROOMRAPES. 



Plants herbacepus, leafless, growing- parasitically upon the roots of other plants. 

 St. furnished with scales and bearing solitary or spicate flowers. 



Cat. 4 5-toothed, inferior, persistent. Cor. irregular, persistent, imbricate in aestivation. 

 Sta. 4, didynamous. Anth. 2-celled, cells distinct, parallel, often bearded at base. 

 Ova. 1-celled, free from the calyx, with 2 parietal placentae Style \. Stigma 2-lobed. 

 Fr. Capsule enclosed within the withered corolla, 1-celled, 2-valved, each valve bearing one simple or 2- 

 Sds. very numerous and .minute. [lobed placenta in the middle. 



Genera 12, species 116, mostly natives of the northern temperate zone. Properties astringent and bitter. 



OROBANCHE. 



Gr. opo/?off, a vetch, ay%eiv, to choke ; being supposed hurtful to the vetch and other plants. 



Calyx 2 5-cleft, the segments often unequal ; corolla ringent, limb 



