436 SOLANACEA'E (POTATO FAMILY) 



1^ Solanum' Jimesii Torr. Ann. Lye. N. Y. 2: 227. 1828. Perennial from 

 small tubers, 2-S dm. high: leaves pinnate; the leaflets 7-9, lanceolate to 

 oyate-oblong, smoothish, tbe lowest often smaller but with no small ones 

 interposed: peduncles cymosely few-several-flowered: corolla white, deeply 

 5-(ileft : fruit not iilclosed in the somewhat enlarged calyx. A relative of the 

 potato (S. tuberosum), which is natiVe in South America. — Moimtains of 

 Colorado to New Mexico and Arizona. ' " ' 



2. Solanum triflorum Njitt. Gen. 1: 128. 1818. Green, slightly hairy or 

 nearly glabrous, low and much spreading: leaves oblong, deeply pinnatifid, 

 wfth wide-rounded sinuses; the lobes 7-9, lanceolate, entire or dentate: pe- 

 duncles 1-3-flowered: corolla Small,' white, a little longer than the, 5-pirted 

 persistent calyx: berries green, 10^12 mm. in diameter, on nodding pedicels. 

 Wild Tomato. — Abundant' and prolific; throughout our range on the plains, 

 hiostly in waste and cultivated ground. ' 



3. Solanum nigrum L. Sp. PI. 186. 1753. Low annual, much branched 

 and often spreading, nearly glabrpus, rough on the angles: leaves ovate, 

 repand-dentate: flowers white, in small imibel-like lateral clusters, drooping: 

 calyx spreading, shorter than the corolla:, filaments hairy: berries black when 

 ripe, 7-8 mm. in diameter. (S. inierius Rydb. Bull. Tprr. Bot. Club 31: 641. 

 1904.) Common NiGHTSHADE.^-T'In our range an iniiroduced weed in waste 

 ground. •■ • , ,,-,. . . !_m,, , , 



3a. Solanum nigrum villosum Mill. . Low, somewhat viscid-pubescent: 

 leaves angulate-dentate: berries varying from yellow to black. [S. villosum 

 (Mill.) Lam.] — Adventive aud mfrequent.^ 



4. Solanum rostratum 'tJunal, Sol. '234. pi: 24. 1813. Densely hoary or 

 yellowish with stellate pubescence and armed with yellow prickles: leayes 

 ovate or oyal in outline, deeply and irregularly pinhately lobed or often 

 1-2-pijQrLatifid: corolla yellow, about 25 mm! broad, the lobes ovate: stamens 

 ar^d style declined, the, lowest stamen larger and longer and with an incurved 

 beak: friiit inclosed by the closerfitting and horridly prickly calyx. Buffalo 

 BcR, — Indigenous in our range on sandy plains; eastward becoming a weed. 



5. Splanum heterodoxum Dunal, Sol.' 235. pi.' 25. 1813. Pubescent with 

 gland-tipped simple hairs, with a few 5-rayed ones on the upper face of the 

 irregularly or interruptedly bipinhatifid leaves, which are armed with yellow 

 subulate, prickles; stems branched, 3-8 dm. high: corolla violet, 3-4 cm. broad, 

 5-ol^ft and some's^(hat irregdlar; the lobes ov4te-acuminate: stamens unequal, 

 the larger one violet, the others yelloW: fruit as in the preceding. — From 

 Colorado tp Texas. ., : , ; < 



6. Solanum elaeagnifolium Cav. Icon. 3: 22." 1794. Silvery-canescent with 

 de^se, spurfTljiie stellate pubescence; stein branched/armed with sharp prickles 

 wit^cli are rarely panting: leaves oblong-lanceolate to linear, 4-10 6m. long: 

 flowers on short sijout, peduncles: the cProUa angulate, 5-lol3ed: calyx-lobes 

 slender: berry at first green, then yellow, finally black, on refleied pedicels, 

 about 10 mm. in diameter. — ^Frequent in Colorado; extending to Kansas and 

 Texas. .■■,•,! ? . „- , i , 



6. DATURA L. Thorn Apple 



Rank narcotic-poisonous weeds, .with ovate leaves and large showy flowers 

 on short peduncles in the forks of the branching stem. Calyx prismatic or 

 tubular, 5'toothed, separating transversely above the base in fruit. Corolla 

 f unnelforrn with a large and spreading 5 or 10-toothed plaited border. Fruit 

 a globular or ovate prickly capsule, 4-valved, 2-celled,^ with 2 thick placentae 

 projected frpm the axis into the middle of the cells. Seeds large and flat. 



Stem purple; flowers violet or lavender , . •;'•'• .1, D. Tatula. 

 Stem greea; flowers white. ' 



Le4vie3 irreguy,rly sinuate-lobed . . . ' . , • . .2 D. Stramonium. 



Leaves unequally ovate, repand-entite ' . . ' - . . . 3. D. meteloides. 



1. Datura Tatula L. Sp. PI. Ed. 2. 256. 1762. Sparingly pubescent, 

 moderately stout, 3-12 dm. high; stem purple: leaves sinuate-Tobed, 1-2 dm. 

 long; the lobes dcute: flowers about 1 dm. long, violets or lavender: calyx 



