ORDER 32. OROBANCHACE^E. 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 tho bladders ; scapo 1 to 3- 

 flowerc-d; lower lip of the calyx bijid or '2-parted; cor. lips entire, the lower twice 

 as long as the obtuse spur. J) Ditches, Ga., Fla., in sort, muddy places (Elliott), 

 floating (Lo Conte). Scapo 2 to 3' high. Oct. 



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

 short, utriculate ; scapo 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 N. States to Wis. Plant about half the size of No. 1 1 . 

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



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

 st. or rhizoma very long, floating; scape simple, 5 11-lloweredl spur conical, 

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

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

 length. Utricles furnished with a fringed, valvato 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; scipcs numerous, simple, 1 -flowered, with a minute 



clasping bract near tho top; spur obtuse, cylindric, ascending, shorter than the 

 elongated tube of the purplo cor. Muddy shores of ponds, Towksbury (Green), 

 Plymouth and Uxbridge, Mass. (Robbins). Leaves generally numerous, G 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. Minule; st. fibrillous, rooting, creeping, urticulatc; Ivs. few 

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

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

 eels 4 to 5 times longer than tho ovate, obtuse, veined sepals ; cor. upper lip ovate, 

 entire, lower 3-lobed ; spur acute appressed to and nearly equaling tho lower lip. 

 A minute species in springy places, Can. to Fla. and La. Scapo 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 subscssilo fls. ; 

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

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

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

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

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

 Bonata 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 tho withered corolla, 1-celled, 2-valved. Seeds very 

 numerous and minute, with albumen. 



Genera 12, specie* 11C, mostly natives of the northern temperate zone. Properties astringent 

 and bitter. 



GENERA. 



* Flowers polygamous, on spicato branches ; sterile above, fertile below KPIPHFCUS. 1 



* Flowers perfect, in a dense, thick spike. Calyx '2-linicted CONOHIIOLIS. 2 



on naked, terminal peduncles. Calyx bractless AI-IIYLLOX. 3 



1. EPIPHE'GUS, Xutt. BEECHDROPS. (Gr. t~/, upon, ^yog, the 

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



