236 
The Ohio Naturalist. 
[Vol. XIV, No. 3, 
all equal and perfect in the following genera except Petunia. 
Gvnecium of 2 united carpels, rarely 3 or 5; ovules and seeds 
numerous; fruit a berry or capsule. 
Key to the Genera. 
1. Corolla funnelform, fruit a capsule. 2. 
1. Corolla campanulate to rotate, fruit a berry, sometimes nearly dry. 4. 
2. Flowers in large terminal racemes or panicles, viscid-pubescent; 
calyx tubular-campanulate or ovoid. Nicotiana. 
2. Flowers axillary or in simple, leafy racemes. 3. 
3. Calyx tube \i inch long and with long, leaf-like lobes. Petunia. 
3. Calyx tube an inch or more long. Datura. 
4. Stems woody, often with thorns, leaves lanceolate, fruit a nearly dry 
berry. Lycium. , 
4. Stems herbaceous, or if woody then the leaves lobed or compound, 
and fruit a fleshy berry. 5. 
5. Anthers unconnected, corolla broadly campanulate, fruiting calyx 
enlarged. 6. 
5. Anthers connivent or slightly connate, corolla rotate, fruiting calyx 
not enlarged. 7. 
6. Ovulary 3-5-locular, fruiting calyx deeply o-parted, corolla pale blue. 
Physalodes. 
6. Ovulary bi-locular, calyx 5-lobed, not parted, corolla yellow or whit¬ 
ish, often with a dark centre. Physalis. 
7. Anthers opening by terminal pores or short slits, leaves entire, lobed 
or pinnately compound. Solatium. 
7. Anthers longitudinally dehiscent, leaves usually bi-pinnatifid, 
or bi-pinnate. Lycopersicon. 
Petunia Juss. 
Viscid-pubescent herbs with entire leaves. Flowers white, 
violet, or purple, having funnelform corollas with plicate, spreading 
or slightly irregular limbs; stamens 5, united with the corolla, 4 
of them didynamous, perfect, the fifth smaller or obsolete; filaments 
slender; ovulary bilocular. 
1. Petunia violacea Lindl. Common Petunia. Very viscid, 
from 8 to 25 inches high. Leaves ovate or obovate, all but the 
uppermost petioled, mostly obtuse; corolla commonly violet- 
purple with a campanulate tube, the limb plicate; sepals linear. 
Monroe, Franklin. Native of South America. 
Nicotiana L. 
Viscid-pubescent narcotic herbs or shrubs. Leaves entire or 
slightly undulate; flowers white, yellow, greenish or purplish; in 
terminal racemes or panicles; calyx tubular-campanulate or 
ovoid, 5-cleft; corolla-tube usually longer than the limb, 5-lobed, 
spreading; stamens 5, united with the corolla; ovulary bilocular, 
rarely 4-loeular; style slender; stigma capitate. 
1. Nicotiana tabacum L. Common Tobacco. Large, showy 
herbs about 30 or mere inches high. Leaves lance-ovate, dccur- 
rent, or the upper ones lanceolate; flowers rose-purple, in panicles 
with funnelform corolla, with somewhat inflated throat and short 
lobes. Huron, Adams. Escaped from cultivation. 
