Obdeb 82.— OROBANOHACB^. 511 



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

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

 cles. Jl. 



9 TJ'. bipdrtita Ell. Lvs. fibrillous-multifid, bearing the bladders ; scape 1 to 3- 

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

 as long as the obtuse spur. — 3 Ditches, Ga., Fla., in soft, muddy places (Elliott), 

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



10 XT. minor L. Lvs. submersed, several times forked, segm. linear-sefaceous, 

 sliort, 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 N. States to Wis. Plant about half the size of No. 11. 

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



11 U. vulgaris L. Los. capiUMeous, muliifld, fibriUtMS ; vesicles numerous, small ; 

 st, or rhizoma very long, floating; scape simple, 5 — 11-floweredl spur conical, 

 obtuse, shorter than the closed cor. lips. — 2f In stagnant pools, TJ. S. and Can. 

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

 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 — 6" long, lower lip larger, with a projecting palate, striped with brown. 

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



12 XT. resupinata Green. Sts. creeping, fibrillous, rooting; lvs. 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 TJxbridge, 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 TT. subulata L. Minute; st. fibrillous, rooting, creeping, urticulate; lvs. 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 ; spwr 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 IT. cornuta Mx. Scape rooting, tall, erect, scaly, with 2 to 5 subsessile fls. ; 

 lvs. 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. (XJ. per- 

 sonata Le Conte.) 



Order LXXXII. 0E0BANCHACE.^E. Beoomrapbs. 



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

 4 to 5-toothed, inferior, persistent. GoroUa irregular, persistent, imbricate in sesti- 

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

 bearded, at base. Ova/ry 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 IIG, mostly natives of the northern temperate zone. Properties astringent 

 and bitter. 



GENERA. 



* Flowers polyi.'.imous, on spicate branches ; sterile above, fertile below Epipkegus. 1 



* Flowers perfect, — in a dense, thick spike. C.ilyx 2-bracted Cowopuolib. 2 



— on naked, terminal jieduncles. Calyx bractless ApnyLLON. 3 



1. EPIPHE^GUS, Nutt. Bebchdrops. (Gr. mi, upon, (prjyog, the 

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



