392 LXXXVII. OROBANCHACE^. Orobanche. 



lateral lobes appressed, lower Up entire -, spur incurved, conical, obtuse, appressed 

 to the lower lip.— Stagnant waters, N. Y. to Ohio, Clark I S. to Ga. The plant 

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

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

 very minute bracteole at the fork. Flowers yellow. 



7. U. PURPUREA. Walt. Purple-flmvered Bladderwort. 



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

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

 upper Up roundish-truncate, loicer Up larger, its lateral lobes cucullate, smaller 

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

 ljp._(l) Pools, Mass. ! to Flor. W. to Wis. Readily known by the large, bright 

 purple flowers. Stem 1— 3f long. Leaves about li' 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. Grceu. (U. Greenii. Oakes.) 



Sis. creeping, fibrillose, rootmg ; Ivs. linear-capillary, erect, undivided and 

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

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

 corolla.— Muddy shores of ponds, Tewksbui'y, ( Green,) Plymouth and Uxbridge, 

 Mass., Robbins ! 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. suBULATA. (U. setacea. Michx.) 



St. fibrillose, creeping, rooting, utriculate ; Ivs. few and minute, among 

 the fibrillose roots, entire, linear, petiolate, glandular-obtuse, sometimes 0'? 

 scapes lew, filiform, 1— 5-flowered; braxts ovate, clasping; pedicels 4—5 times 

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

 3-lobed ; sp^ir 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 2—3" by i". Flowers yellow, 3—4" broad. Jn. 



10. U. coRNUTA. Michx. Horned Bladderwort. 



Scape rooting, rigidly erect, scaly, m- ith 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. PERSONATA. Le Conte. Snap-dragon Bladderwort. 



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

 acute lobes of the calyx'; cw. uppe? Up 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. OROBANCHACE^.— Broomrapes. 



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

 St. furnished with scales and bearing solitarj' or spicate flowers. 



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

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

 Opa. 1-celled, free from the calyx, with 2 parietal placentae. Style 1. Stig7na 2-lohed. 

 Ft-.— Capsule enclosed within the withered corolla, 1-celled, 2-valved, each valve bearing one simple orS- 

 Sds. veo' numerous and minute. [lobed placenta in the middle. 



Genera 12, species U6, mostly natives of the northern temperate zone. Properties astringent and bitter. 



OROBANCHE. 



Gr. opoffoi, 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 



