850 FLORA. 



Spike dense, or the lower flowers separated, 0.7-2 dm. long; bracts lanceolate, 

 equalling or longer than the flowers; flowers 1-2 cm. long; calyx split both above 

 and below, each of the lateral segments 2-cleft, the teeth lanceolate-subulate; 

 corolla-tube yellowish, scarcely constricted above the ovary, the limb bluish. Para- 

 sitic on the roots of clover, N. J. to Va. Nat. from Europe. May-July. 



3. Orobanche Ludoviciana Nutt. LOUISIANA BROOM-RAPE. (I. F. f. 

 3362.) Stems stout, simple, viscid-puberulent, 1-3 dm. high, scaly. Flowers 

 I2-l6 mm. long, numerous in dense terminal spikes, i-2-bracted under the calyx; 

 calyx-lobes somewhat unequal, linear-lanceolate, acuminate; corolla 2-lipped, pur- 

 plish, its tube narrow, about twice as long as the limb; anthers woolly; capsule 

 ovoid-oblong, shorter than the calyx. In sandy soil, 111. to the N. W. Terr., 

 Tex., Ariz, and Cal. June- Aug. 



3. CONOPHOLIS Wallr. 



An erect stout simple glabrous, densely scaly, light-brown herb, parasitic on the 

 roots of trees, with yellowish flowers 2-bracteolate under the calyx, in a thick 

 dense bracted spike, the bracts similar to the scales of the stem. Corolla strongly 

 2-lipped, the tube slightly curved, the upper lip concave, nearly erect, emarginate, 

 the lower spreading, 3-lobed. Stamens exserted; anther-sacs bristly pubescent. 

 Placentae about equidistant; stigma capitate, obscurely 2-lamellate. Capsule 

 ovoid-globose. [Greek, signifying a scaly cone.] Two known species, one of 

 eastern N. Am., the other Mexican. 



i. Conopholis Americana (L. f.) Wallr. SQUAW-ROOT. (I. F. f. 3363). 

 Plants 7-25 cm. high from a thickened base, light brown, usually clustered, covered 

 with stiff imbricated scales. Upper scales lanceolate or ovate, acute, 1-2 cm. long, 

 the lowest much shorter; flowers about 12 mm. long, exceedingly numerous in the 

 dense spike which is 1-2 cm. thick; corolla pale yellow, somewhat exceeding the 

 calyx; anthers sagittate; capsule ovoid-globose, 8-10 mm. high. In rich woods at 

 bases of trees, Canada?; Me. to Mich, and Fla. April-Aug. 



4. LEPTAMNIUM Raf. 



An erect slender glabrous, purplish or yellowish, rather stiff branching herb, 

 parasitic on the roots of the beech, with few small scattered scales, and sessile 

 dimorphous flowers, distantly spicate on the branches, the lower cleistogamous, 

 abundantly fertile, the upper complete but mostly sterile. Calyx short, 5 -toothed. 

 Corolla of the upper flowers cylindric, slightly flattened laterally, the tube much 

 longer than the 4-lobed limb, the upper lobe concave, larger than the three lower 

 ones; stamens not exserted; anther-sacs mucronulate at the base; style filiform, 

 2-lobed; ovary with an adnate gland on the upper side near the base. Corolla of 

 the lower flowers minute, not unfolding, borne like a hood on the summit of the 

 ovary; style very short; placentae contiguous in pairs; capsule at length 2-valved 

 at the summit. [Greek, referring to the small calyx.] A monotypic genus. 



i. Leptamnium Virginianum (L.) Raf. BEECH-DROPS. (I. F. f. 3364.) 

 Plant 1.5-6 dm. high from a thick scaly base, the roots brittle, fibrous. Branches 

 straight, ascending; corolla of the upper flowers 8-10 mm. long, striped with 

 purple and white, the limb not spreading; stamens about as long as the corolla; 

 style slightly exserted; lower flowers 3 mm. long, the corolla resembling the 

 calyptra of a moss; capsule 6 mm. high, somewhat oblique and compressed, many- 

 seeded. In beech woods, N. B. to Fla., Ont., Mich., Mo. and La. Aug-Oct. 



Family 12. BIGNONIACEAE Pers. 

 Trumpet-creeper Family. 



Trees, shrubs or woody vines, a few exotic species herbs, with oppo- 

 site (rarely alternate) leaves, and mostly large and showy, clustered, 

 more or less irregular flowers. Calyx inferior, gamosepalous. Corolla 

 gamopetalous, 5-lobed, somewhat 2-lipped, at least in the bud. Anther- 

 bearing stamens 2 or 4, inserted on the tube of the corolla and alternate 

 with its lobes ; anthers 2-celled, the sacs longitudinally dehiscent. Disk 



