988 SOLANACEAE 



4. CHAMAESARACHA A. Gray. 



Perennial herbs, with entire or pinnatifid leaf-blades, these decurrent on the petiole. 

 Peduncles solitary, or in clusters of 2-4 from the axils of the leaves. Calyx campanu- 

 late, 5-lobed, somewhat enlarged at maturity, but not bladdery-inflated, close-fitting to the 

 berry, thin, neither angled nor ribbed, and faintly, if at all, veiny, open at the mouth, 

 not exceeding the berry. Corolla rotate, white or ochroleucous, often tinged with purple : 

 limb plicate. Stamens adnate to the base of the corolla. Anthers oblong, opening by 

 longitudinal slits. Style and stigma as in Physcdis. Seeds reniform, flattened, rugose - 

 favose or punctate. The plants flower in the summer. 



Foliage puberulent and hirsute : pubescence dense. 1. C. conioides. 



Foliage puberulent or stellate-pubescent, the calyx only sometimes hirsute : pubescence sparse. 



2. C. Coi'onopus. 



1. Chamaesaracha conioides (Moric. ) Britton. Foliage cinereous-puberulent with 

 short branched somewhat glutinous or viscid hairs, generally also viscidly hirsute or villous 

 with long and branched hairs, especially on the calyx. Stems much branched from the 

 base, at first upright, at length spreading : leaf-blades oblanceolate to obovate-rhombic, 

 generally acutish and tapering into short petioles, generally deeply lobed, but varying 

 from nearly entire to pinnatifid : calyx -lobes triangular, generally acutish : corolla about 

 1 cm. in diameter, white or ochroleucous, sometimes violet purplish : berry from 5-8 cm. 

 in diameter. 



In dry clayey soil, Kansas to California and Mexico. 



2. Chamaesaracha Cordnopus (Dunal) A. Gray. Foliage pruinose or stellate- 

 pubescent or glabrate. Stems branched from the base and diffuse, obtusely angled : leaf- 

 blades linear or lanceolate, tapering at the base, more or less sinuately lobed, occasionally 

 subentire, sometimes pinnatifid : calyx stellate-pubescent or sometimes hirsute ; lobes 

 triangular, acute : corolla white or ochroleucous, the appendages of the throat often pro- 

 tuberant : berry 5-8 mm. in diameter, nearly white. 



In clayey soil, Kansas to Utah, Texas and Mexico. 



5. SOLANUM L. 



Annual or perennial often spiny herbs or shrubs, or sometimes vines. Leaves alter- 

 nate : blades entire, toothed, pinnatifid or variously lobed. Flowers in cymes, racemes, 

 panicles or umbel-like clusters. Calyx varying from campanulate to rotate, sometimes 

 accrescent : lobes usually 5. Corolla white, yellow, blue or purple, rotate : tube very 

 short : limb 5-angled or 5-lobed, plaited. Stamens 5, adnate to near the throat of the 

 corolla-tube. Anthers narrow, converging or united into a cone : sacs opening by terminal 

 pores, slits or sometimes lengthwise. Ovary mostly 2-celled. Berries subglobose or oval, 

 seated in the calyxes or rarely enclosed by them. Seeds flattened. 



A. Plants destitute of prickles. 

 Vines or viue-like shrubs. 



Berries oval. 1. S. Dulcamara. 



Berries globose. 



Middle lobes of the leaf-blades prevailingly lanceolate or ovate : an- 

 thers fully 1 mm. broad. 2. S. triquetrum. 

 Middle lobe of the leaf-blades prevailingly linear : anthers less than 



1 mm. broad. 3: S. Lindheimerianum. 



Herbs or shrubs. 

 Annual herbs. 



Leaf-blades repand or entire : berries black. 



Foliage glabrous or nearly so : corolla 6-8 mm. broad : calyx-lobes 



spreading at maturity. 4. S. nigrum. 



Foliage puberulent or finely pubescent : corolla 8-10 mm. broad : 



calyx-lobes appressed to the berry. 5. S. gracile. 



Leaf-blades deeply pinnatifid : berries green. 6. S. triflorum. 



Perennials, more or less shrubby. 

 Foliage glabrous. 



Corolla 11-14 mm. wide : berries mainly over 1 cm. thick : leaf- 

 blades with pale margins. 7. S. Pseudo- Capsicum. 

 Corolla 25-30 mm. wide : berries mainly less than 1 cm. thick : leaf- 

 blades without distinct margins. 8. S. glaucum. 

 Foliage more or less pubescent. 



Calyx-lobes very narrow, several times longer than broad. 12. S. elaeagnifolinm. 



Calyx-lobes broad, often fully as broad as long. 

 Leaf-blades velvety beneath. 



Corolla-lobes ovate : ovary pubescent. 9. S. verbascifolium. 



Corolla-lobes lanceolate : ovary glabrous. 10. S. Blodgettii. 



Leaf-blades rather harshly pubescent beneath. 11. S. Bahamensc. 



