2. Solanum Trifldrum Nutt. Cut-Leaved Nightshade

Fig. 3718

Solatium triflorum Nutt. Gen. 1: 128. 1818.

Annual, sparingly pubescent with simple hairs, or glabrous; stem branched, 1°-3° high. Leaves pinnatifid or some of them pinnately lobed, acute at the apex, petioled, 2'-4' long, the lobes triangular-lanceolate, acute or obtuse, entire or dentate, the sinuses rounded; peduncles lateral, 1-3-flow-ered, 1/2'-1' long; pedicels 3"-7" long, reflexed in fruit; calyx-segments lanceolate, shorter than the corolla, persistent at the base of the berry; corolla white, 4"-5" broad; anthers obtuse; berries green when mature, globose, smooth and glabrous, about 5" in diameter.

On prairies and in waste places, Ontario to Manitoba, Kansas, New Mexico and Arizona. Introduced in Missouri. May-Oct.

2 Solanum Trifldrum Nutt Cut Leaved Nightshade 389

3. Solanum Carolinense L. Horse-Nettle. Sand-Brier

Fig. 3719

Solatium carolinensis L. Sp. Pl. 184. 1753.

Perennial, green, finely stellate-pubescent with 4-8-rayed hairs; stem erect, branched, 1°-4° high, the branches, petioles, midveins and sometimes the lateral veins of the leaves armed with straight subulate yellow prickles. Leaves oblong or ovate, repand, lobed, or pinnatifid, 2'-6' long, the lobes obtuse or acutish; petioles 3"-10" long; flowers cymose-racemose, appearing terminal, but really lateral, as is manifest in fruit; pedicels 3'-7" long, recurved in fruit; calyx-lobes lanceolate, acuminate, about one-half the length of the corolla, persistent at the base of the berry; corolla-lobes ovate-lanceolate, acute; anthers elongated; berries orange-yellow, smooth and glabrous, 8"-10" in diameter.

In dry fields and in waste places, southern Ontario to Vermont, Massachusetts and Florida, west to Illinois, Nebraska and Texas. Adventive in its northeastern range. Apple-of-sodom. Radical-weed. Bull-nettle. Tread-softly. May-Sept.

3 Solanum Carolinense L Horse Nettle Sand Brier 390

4. Solanum Eiaeagnifolium Cav. Silver-Leaved Nightshade

Fig. 3720

S. eiaeagnifolium Cav. Icon. 3: 22. pl. 243. 1794.

Perennial, densely and finely stellate-pubescent, silvery-canescent all over; stem branched, 1°-3° high, armed with very slender sharp prickles, or these wanting. Leaves lanceolate, oblong, or linear, petioled, 1'-4' long, 3"-12" wide, mostly obtuse at the apex, narrowed or rounded at the base, repand-dentate or entire; flowers cymose, 8"-12" broad, violet or blue; peduncles short and stout, appearing terminal, but soon evidently lateral; calyx-lobes lanceolate or linear-lnceolate, acute; anthers linear; ovary white-tomentose; berries globose, yellow or darker, smooth and glabrous, 4"-6" in diameter.

On dry plains and prairies, Missouri and Kansas to Texas and Arizona. Trompillos. May-Sept.

4 Solanum Eiaeagnifolium Cav Silver Leaved Nightsh 3914 Solanum Eiaeagnifolium Cav Silver Leaved Nightsh 392