SOLANACEAE. 8 1? 



3. Datura Metel L. ENTIRE-LEAVED THORN-APPLE, (i. F. f. 3224.) 

 Annual, finely glandular-pubescent, 1-3 m. high. Leaves broadly ovate, acute, 

 inequilateral, rounded or subcordate at the base, 1-2.5 dm. long; flowers white, 

 1.5-1.8 dm. high; calyx about one-half as long as the corolla; capsule globose or 

 ovoid- globose, obtuse, prickly and pubescent, 2.5-4 cm. in diameter. In waste 

 places, R. I. to Fla. Native of trop. Am. July-Sept. 



xi. NICOTIANA L. 



Viscid-pubescent narcotic herbs or shrubs, with large alternate entire or slightly 

 undulate leaves, and white yellow greenish or purplish flowers, in terminal 

 racemes or panicles. Calyx tubular-campanulate or ovoid, 5 -cleft. Corolla-tube 

 usually longer than the limb, 5 lobed, the lobes spreading. Stamens 5, inserted 

 on the tube of the corolla; filaments filiform; anther- sacs longitudinally dehiscent. 

 Ovary 2-celled (rarely 4-celled) ; style slender; stigma capitate. Capsule 2-valved, 

 or sometimes 4-valved at the summit. Seeds numerous, small. [Named for John 

 Nicot, French ambassador to Portugal, who sent some species to Catherine de 

 Medici, about 1560.] About 50 species, mostly natives of America. Besides the 

 following, some 10 others occur in the southern and western U. S. 



Corolla 2.5 cm. long, the tube cylindric; calyx-lobes triangular. i. N. rustica. 



Corolla 10-15 cm. long, the tube very slender; calyx-lobes linear. a. N. longiflora. 



1. Nicotiana rustica L. WILD TOBACCO. (I. F. f. 3225.) Annual, 6-12 dm. 

 high. Leaves broadly ovate, thin, entire, slender petioled, 0.5-2 dm. long; flowers 

 greenish yellow, panicle;!; pedicels 6-12 mm. long; calyx-lobes acute, shorter 

 than the tube; corolla-tube somewhat enlarged above, the lobes short, obtuse; 

 capsule glob >se, glabrous, about I cm. in diameter, 2-valved, longer than the 

 calyx. In fields and waste places, Ont. to Minn., N. Y. and Fla. Cultivated by 

 the Indians. June-Sept. 



2. Nicotiana lo igiflora Cav. LONG-FLOWERED TOBACCO. (I. F. f. 3226.) 

 Annual, minutely rough-puberulent and viscid, 4-9 dm. high. Basal leaves 

 obtuse, 1.5-2.5 dm. long, tapering into slender winged petioles; stem leaves linear 

 or lanceolate, sessile; flowers short -pedicelled; calyx oblong, pubescent, its narrow 

 lobes nearly as long as the tube; corolla white or purplish, viscid, the tube slender, 

 2-3 mm. in diameter, expanding above, the lobes ovate lanceolate, acute; capsule 

 oblong. Near Harrisburg and Easton, Pa. Escaped from gardens. Native of 

 S. Am. Aug. -Oct. 



12. PETUNIA Juss. 



Viscid pubescent herbs, with entire leaves, and white violet or purple flowers 

 (in cultivation sometimes variegated). Calyx deeply 5-cleft or 5 parted. Corolla 

 funnelform or salverform, the limb plicate, spreading, slightly irregular. Stamens 

 5, inserted on the throat of the corolla*; 4 of them didynamous. perfect, the fifth 

 smaller or obsolete; filaments slender; anthers 2-lobed. Disk fleshy. Ovary 2 

 celled; ovules numerous; style filiform; stigma 2 lamellate. Capsule 2-celled, 2- 

 valved, the valves entire. Seeds small, the testa rugose. [Petun, an Indian name 

 of tobacco.] About 12 species, of S. Am. 



Corolla white, its tube cylindric. i. P, axillaris. 



Corolla violet-purple, its tube campanulate. 2. P. violacea. 



1. Petunia axillaris (Lam.) B.S. P. WHITE PETUNIA. (I. F. f. 3227.) Very 

 viscid, about 3 dm. high. Leaves ovate to obovate, obtuse or blunt-pointed, 7-10 

 cm. long, sessile, or the lower narrowed into short margined petioles; peduncles 

 slender, often longer than the leaves; calyx-segments linear-oblong, obtuse; corolla 

 white, its tube slightly enlarged above, 2.5-4 cm. long, 3-4 times as long as the 

 calyx, its limb abruptly spreading, the lobes rounded. In waste places, escaped 

 from gardens, N. Y. and Perm. Native of southern Brazil. July-Sept. 



2. Petunia violacea Lindl. VIOLET PETUNIA. (I. F. f. 3228.) Similar to 

 the preceding, but usually lower, and the stem slender. Leaves ovate or obovate, 

 all but the uppermost petioled, mostly obtuse, 2.5-6 cm. long; peduncles slender; 

 Calyx-segments linear; corolla violet-purple, its tube campanulate, 1.8-3 cm> lon g 



