756 SOL-\XACE-\E 



close-fitting to the berr\-. Corolla rotate, white or ochroleucous. often tinged 

 with purple, plicate. Stamens 5: filaments adnate to the base of the corolla; 

 anther opening by longitudinal slits. Seeds reniform, flattened, rugose-favose. 



Pubescence dense, hirsute as well as puberulent. 1. C. conioides. 



Pubescence sparse, puberulent or steUat-e, hirsute if at all only on the calj x. 



2. C. Coronopus. 



1. C. conioides Moric. Britten. Stems erect, decumbent, or prostrate, 

 viscid; leaf-blades oblanceolate to obovate-rhombic, acute and tapering into 

 short petioles, usually deeply lobed. var\-ing from subentire to pinnatifid: cah-x- 

 lobes triangular, acutish: coroUa about 1 cm. broad, white or ochroleucous. C. 

 sordida (Dunal; A. Grav, Dr\- clavev soil: Kans. — Colo. — Ariz. — Tex.; Mex. 

 Son. My-Jl. 



2. C. Coronopvis (Dunal^ A. Gray. Stem obttisely angled: leaf-blades 

 linear or lanceolate, sinuately lobed to pinnatifid, pruinose : cah-x-lobes triangular, 

 acute; coroUa white or ochroleucous. Dr^" clayey soil: Kans. — Colo. — Ariz. — 

 Tex. Son. — Submont. My-D. 



4. ANDROSERA Xutt. Buffaix) BtrR. 



Annual prickly herbs. Leaves alternate, pinnatifid. Flowers perfect, 

 cymose. Calyx campanulate. prickly, somewhat accrescent and enclosing the 

 berry in fruit, p-lobed. Corolla yellow or purple. 5-lobed. plaited. Stamens 5. 

 dissimilar, declined, adnate to near the throat of the corolla; anthers narrow, 

 opening by terminal pores. Ovar%- 2-ceUed. Fruit a berr>-, enclosed in the 

 prickly calyx. Seeds flattened. 



1. A. rostxata (Dunalj Rydb. Stem yellowish-hirsute and prickly, 2-7 

 dm. high, widely branching: leaf-blades 5-12 cm. long, once or twice pinnatifid: 

 segments oval to oblong, obtuse, entire or tmdulate, yellowish hirsute: cal\-x 

 bristly; corolla yeUow, about 2.-5 cm. broad. Solanum rostratum Dimal. Waste 

 places, prairies, and river valley's: X.D. — Tex. — X.M. — Wyo.; Mex.; adv. east- 

 ward to X.H. and Fla. Plain — SiAmont. ^Ir-S. 



5. SOLANUM (Toum.) L. Xightshade, Bittersweet, Potato, 



Horse Xettle. 



Annual or perennial, often prickly, or most of ours unarmed herbs, rarely 

 vines. Leaves alternate, entire, toothed or pinnatifid. Flowers perfect, regular, 

 in CT-Tnes. racemes, mnbels, or panicles. Cal\-x from campanulate to rotate; 

 lobes 5. Corolla variously colored, rotate, 5-angled or o-lobed, pUcate. Stamens 

 •5, adnate to near the throat of the coroUa. Anthers narrow, converging or 

 united into a cone: sacs opening by terminal pores, rarely lengthwise. Ovan," 

 mostly 2-ceUed. Fruit a berry, seated in the cal>"x. Seeds flattened. 



Annuals. 



L^ves pinnatifid. 1- S. triflorum. 



Leaves sinuately dentate or entire. 



Plant strigose or glabrous: berry black. ^ 



Leaves glabrous or nearly so: sepals very obtuse. 2. S. nigrum. 



Leaves decidedly strigose beneath; sepab abruptly acutish. 



Corolla-lob^ 3-^ mm. long. 3. S. interius. 



CoroUa-lobes 6-8 mm. long. 4. S. Douglasii. 



Plant more or less viscid- villous : berry greenish or yellowish. 5. S. rillosum. 

 Perennials. 



Plant green, glabrotu or pubescent, but not stellate, never prickly. 



Low pljtfits with ruber-bearing rootstocks; leaves pinnately divided into 5—7 divi- 

 sions. 6. S. Jamesii. 

 Tall plants, more or less woodv below, not tuberif erous ; leaves simple or pinnately 

 .3-lobed. 

 Plant climbing: b«Tyellii)soid. 7. S. Dulcamara. 

 Plant not cUmbing; berry giobose. 4. S. Douglasii. 

 Plant with stellate hairs; stem often prickly. 



Leaves silvery-white, oblong to linear. S. S. elaeagnifolium. 



Leaves greenl ovate, sinuately toothed. 9. S. carolinense. 



1. S. triflonim Xutt. Stem branched at the base, spreading, 2-9 dm. 

 long, sparingly hirsute: leaf-blades oblong or ovate in outline, pinnatifid, 3-9 cm. 

 long; lobes acute, entire or toothed; cah"s-lobes oblong or oblong-lanceolate; 



