Dicotyledones. 107 



1. Aphyllon unifldrum, Gray. (L., unus, one; flos, floris, flower.) ONE- 

 FLOWERED BROOMRAPE or CANCER ROOT. Stem hardly appearing above the 

 ground, and sending up i-flowered, scapelike peduncles, 3 to 8 inches high. Calyx 

 less than 5 the length of the corolla, its divisions awl-shaped. Corolla about i 

 inch long, white to violet, its lobes obovate and short, and tube slightly curved. 

 Placentae equidistant. In damp woods, on the roots of various plants. 



2. Aphyllon fasciculatum, Gray. (L., fasciculus, a small bundle.) CLUS- 

 TERED BROOMRAPE or CANCER ROOT. Stems 2 to 4 inches high, glandular- 

 pubescent, bearing 3 to 15 i-flowered peduncles. Corolla purplish yellow, plainly 

 2-lipped. In sandy soil, parasitizing the roots of various plants. 



n. CONOPHOLIS. Squaw Root or Cancer Root. 



(Gr., konos, cone; pholis, scale.) 



Light brown, scaly herb, parasitic on the roots of trees. Flowers 

 in dense, scaly spikes. Calyx irregularly 5-toothed, split down the 

 lower side, subtended by 2 bractlets. Corolla 2-lipped, its tube slightly 

 curved ; upper lip nearly erect, concave, notched at the summit ; lower 

 lip shorter, 3-lobed and spreading. Stamens exserted ; anthers pubes- 

 cent. The 4 placentae about equidistant. 



i. Conopholis Americana, Wallr. SQUAW ROOT. Stems usually clustered, 

 3 to 10 inches high, light brown, covered with overlapping scales, lower scales much 

 shorter than the upper. Flowers about \ inch long; corolla pale yellow. Among 

 fallen leaves in rich woods. 



BIGNONIACE^E. BIGNONIA or TRUMPET CREEPER FAMILY. 



Shrubs or trees or woody vines. Leaves generally opposite. Flowers 

 large, clustered, more or less irregular. Calyx 2-lipped, 5 -cleft, or entire. 

 Corolla gamopetalous, more or less funnel-form, tubular, or campanulate, 

 sometimes 2-lipped. Anther-bearing stamens, 2 or 4 and didynamous, 

 alternate with the lobes of the corolla and inserted on its tube. Ovary 

 superior, often 2-celled by ingrowth of the placentas or projections from 

 them ; many-ovuled. Fruit, a dry capsule. Seeds flat and winged. 



I. BIGNONIA. Cross Vine or Tendriled Trumpet Flower. 



(Named for Abte Bignon.) 



Tall, woody climber, with compound leaves ending in a tendril. 

 Calyx short, somewhat 5-toothed or undulate. Corolla gamopetalous, 

 inflated above the calyx, 5-lobed, somewhat 2-lipped. Perfect stamens 

 4, didynamous, included. Capsule linear, flattened parallel with the 

 partition. Seeds transversely winged. 



