ORDER 82. OROBANCHAOE^. 511 



Car. Submersed stems dichotomous, short and filiform. Scapes 2 to 3' high, 

 often with but 1 small, yellow flower The Ivs. appear rather like fine radi- 

 cles. Jl. 



9 U. bipartita Ell. Lvs. fibrillous-multifid, bearing the bladders ; scape 1 to 3- 

 flowered; lower lip of the calyx bifid or 2-parted; cor. lips entire, the lower twico 

 as long as the obtuse spur. 3D Ditches, G-a., Fla., in soft, muddy places (Elliott), 

 floating (Le Conte). Scape 2 to 3' high. Oct. 



10 U. minor L. Lvs. submersed, several times forked, segm. linear-setaceous, 

 short, utriculate ; scape 3 to 6- flowered; cor. ringent, upper lip ovate, emarginate, 

 as long as the palate, lower obovate, flat, much longer than the obtuse, deflexed 

 spur. Pools, Can. and KT. States to Wis. Plant about half the size of No. 11. 

 Cor. gaping, pale, yellowish. Fruit nodding. Jl. 



11 U. vulgaris L. Lvs. capiUaceous, multifid, fibrillous; vesicles numerous, small; 

 sfc. or rhizoma very long, floating; scape simple, 5 11-floweredl spur conical, 

 obtuse, shorter than the closed cor. lips. if In stagnant pools, U. S. and Can, 

 Floating stems several feet long, very branching. Leaves very numerous, 1' ia 

 length. Utricles furnished with a fringed, valvate aperture, usually inflated. 

 Scape 5 10' high, stout, arising out of the water. Flowers alternate, showy, 

 yellow, 5 8" long, lower lip larger, with a projecting palate, striped with brown. 

 Jn., Jl. (U. macrorhiza Le Conte.) 



12 U. resupinata Green. Sts. creeping, fibrillous, 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 purple cor. Muddy shores of ponds, Tewksbury (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. 



13 U. subulata L. Minnie; st. fibrillous, rooting, creeping, urticulate; Ivs. few 

 and minute, among the fibrillous roots, entire, linear, petiolate, glandular-obtuse, 

 sometimes ? scapes few, filiform, 1 to 5-flowered ; bracts ovate, clasping ; pedi. 

 eels 4 to 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 springy places, Can. to Fla. and La. Scape 2 to 4' high. 

 Lvs. 2 to 3" by 1". Fls. yellow, 3 to 4" broad. Jn. 



14 U. cornuta MX. Scape rooting, tall, erect, scaly, with 2 to 5 subsessile fls. ; 

 Ivs. fugacious or ; lower lip very broad, 3-lobed, its center (palate) very prominent, 

 sides reflexed, upper lobe much smaller, emarginate; spur subulate, acute, de- 

 curved away from the cor., and of equal length. Can. to Fla. and La., in shallow 

 waters or mud. St. or scape 9 to 12' high. Pedicels scarcely 2" long in flower, 

 3 to 6" in fruit. Spur 4 to 4" long. Fls. large, yellow. Jn. Aug. (U. per- 

 sonata Le Conte.) 



ORDER LXXXII. OROBANCHACE^E. BROOMRAPES. 



Herbs fleshy, leafless, growing parasitically upon the roots of other plants. Calyx 

 4 to 5-toothed, inferior, persistent. Corolla irregular, persistent, imbricate in aesti- 

 vation. Stamens 4, didynamous. Anthers 2-celled, cells distinct, parallel, often 

 bearded, at base. Ovary 1-celled, free from the calyx, with 2 or 4 parietal placen- 

 tae. Capsule enclosed within the withered corolla, 1-celled, 2-valved. Seeds very 

 numerous and minute, with albumen. 



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

 and bitter. 



GENERA. 



* Flowers polygamous, on spicate branches ; sterile above, fertile below ........ EpiPitEors. 1 



* Flowers perfect, in a dense, thick spike. Calyx 2-bracted ................. CONOPHOLIS. 2 



on naked, terminal peduncles. Calyx bractless ............ APIIYLLON. 3 



1. EPIPHE'GUS, Nutt. BEECHDROPS. (Gr. tTn, upon, ^yo?, tho 

 beech ; being parasitic on the roots of that tree.) Monoeciously polyg- 



