Obdbr 82.— OEOBANCHACB^ 511 



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

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

 des. Jl 



9 t7. bipdrtita Ell. Lvs. fibrillous-multifid, bearing the bladders; scape 1 to 3- 

 flowered; lower Up of tlie calyx bifid or t-parted; cm: lips entire, the lower twice 

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

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



10 IT. minor L. Lvs. submersed, several times forked, segm. linear-seiar.e<nis, 

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

 as long as the palate, lower obovate, flat, much longer thau 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. Lvs. capiUaceous, mvUifid, fibrinous ; vesicles numerous, email ; 

 St or rhizoma very long, floating; scape simple, 5 — ll-floweredl spur conical, 

 obtuse, shorter tlian the closed cor. lips. — y In stagnant pools, XT. S. and Can. 

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

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

 Scape 6 — 10' high, stout, arising ouf of the water. Flowers alternate, showy, 

 yellow, 5 — 6" long, lower lip larger, with a projecting palate, striped with brown. 

 Jn., JL (U. macrorbiza Le Conte.) 



12 XT. resupin^ta Green. Sts. creeping, fibrinous, 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 pui-ple cor. — ^Muddy shores of ponds, Tewksbury (Green), 

 Plymouth and Uxbridge, Mass. (Robbins). Leaves generally numerous, 6 — 15" 

 high, tlio bract 1' below the flower. CoroUa light purple, 4" long, lips roundish, 

 entire, remote from the spur. Jl. 



13 XT. subulata L. Minute; st. fibrinous, rooting, creeping, urticulate; Iva few 

 and minute, among the fibrinous 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" Fla. yellow, 3 to 4" broad. Jn. 



14 XT. oorniita 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 Jobe much smaller, omarginate; spur subulate, acute, de- 

 cuirved 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 Lo Conte.) 



Order LXXXII. OROBANCHACE^. Broomrapes. 



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

 4 to 6-toothed, inferior, persistent. Corolla irregular, persistent, imbricate in assti- 

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

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

 ta;. Capsule enclosed within the withered corolla, 1-ceIled, 2-valved. Seeds very 

 jiumorous and minute, with albumen. 



Oenera 12, upeciM 116, mostly nntives of the nortbcrn tomiMjratu zone. Properties astringent 

 :ii<i bitter. 



GBKERA. 



* Klowers polygamous, on epicate branches ; Bterile above, fertile below EpipitfiGns. 1 



* Flowers perfect, — in a dense, thick spike. Calyx 2-bracted Conophoi.ib. 2 



— on naked, terminal peduncles. Calyx bractleas Afuyllom. 8 



1. EPIPHE^GUS, Nutt. Bkbchdrops. (Gr. e^/, upon, (pJjyog, iho 

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



