Vol. III.] 



POTATO FAMILY. 



141 



(Fig. 3226.) 



2. Nicotiana longiflora Cav. Long-flowered Tobacco. 



Aicotiana longiflora Cav. Descr. PI. n6. 1802. 



Annual, minutely rough-puberulent and viscid; 

 stem erect, slender, branched, i/^°-3° liigh. Basal 

 leaves ovate-lanceolate (or broadly oblanceolate), ob- 

 tuse, 6'-io' long, I'-j' wide, tapering into slender 

 winged petioles; stem leaves linear or lanceolate, ses- 

 sile, 2'-4' long; flowers in terminal racemes, short-pedi- 

 celled, 4'-6' long; calyx oblong, pubescent, its narrow 

 lobes nearly as long as the tube; corolla white or pur- 

 plish, viscid, the tube slender, \"-\]2." in diameter, 

 expanding above, the lobes ovate-lanceolate, acute; 

 capsule oblong, about equalling the calyx-lobes. 



Near Harrisburg and Easton, Pa. Escaped from gar- 

 dens. Native of South America. Aug.-Oct. 



12. PETUNIA Juss. Ann. Mus. Paris, 2: 

 215. pi. 47. 1803. 



Viscid-pubescent annual or perennial branching 

 herbs, with entire leaves, and axillary orterniinal soli- 

 tary white violet or purple flowers (in cultivation sometimes variegated"!. Calyx deeply 

 S-cleft or 5 parted, the segments narrow. Corolla funnelform or salverform, the limb 

 plicate, spreading, slightlj' irregular. Stamens 5, inserted on the throat of the corolla, 4 of 

 them didynamous, perfect, the fifth smaller or obsolete; filaments slender; anthers ovoid, 2- 

 lobed. Disk fleshy. Ovary 2-celled; ovules numerous in each cavity; style filiform; stigma 

 2-lamellate. Capsule 2-celled, 2-valved, the valves entire. Seeds small, the testa rugose. 

 [Peiun, an Indian name of tobacco.] 



About 12 species, natives of South America. 

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



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



I. Petunia axillaris (Lam.) B.S. P. White Petunia. (Fig. 3227.) 



Nicotiana axillaris Lam. Encycl. 4: 480. 1797. 

 Petunia yiyctaginiflora Juss. Ann. Mus. Paris, 2: 215. pi. 



47. f. 2. 1803. 

 Petunia axillaris B.S.P. Prel. Cat. N. Y. 38. 1888. 



Very viscid; stem stout, about 1° high. Leaves ovate 

 to obovate, obtuse or blunt-pointed at the apex, sessile, 

 or the lower narrowed into short margined petioles, 3'- 

 4' long, i'-2' wide; peduncles slender, 2'-4'long, often 

 longer than the leaves; calyx-segments linear-oblong, 

 obtuse; corolla white, its tube cylindric, slightly en- 

 larged above, I'-i^' long, 3-4 times as long as the 

 calyx, its limb abruptly spreading, about 2' broad, the 

 lobes rounded. 



In waste places, escaped from gardens, southern New 

 York and Pennsylvania. Native of southern Brazil. July- 

 Sept. 



2. Petunia violacea Lindl. Violet 

 Petunia. (Fig. 3228.) 



Petunia violacea Lindl. Bot. Reg. pi. 1626. 1833. 



Similar to the preceding species, but usually 

 rather lower, and the stem slender. Leaves 

 ovate or obovate, all but the uppermost petioled, 

 mostly obtuse, I'-iy'i' long; peduncles slender, 

 I '-2' long; calyx-segments linear, subacute, or 

 obtuse; corolla violet-purple, its tube campanu- 

 late, g^'-is" long, the limb less abruptly spread- 

 ing, \'-\yz' broad, the lobes subacute. 



In waste places, escaped from gardens, southern 

 New York and Pennsylvania. Native of southern 

 Brazil and Paraguay. June- Sept. 



Petunia parviflora Juss.. a prostrate pubescent an- 

 nual, with small linear to spatulate leaves, and a 

 funnelform corolla 4"-5" long, is abundant on bal- 

 last about the eastern seaports. 



