POTATO FAMILY 755 



about L5 cm. broad; berry yellow or greenish. Prairies and plains: 111. — S.C. 

 Ariz, — S.D. Plain — Submord. Jl-S. 



7. P. pumila Nutt. Stem 3-10 dm. high, obscurely angled, hirsute; leaf- 

 blades thickj acute at both ends, 5-10 cm. long, entire or sinuate; calyx densely 

 hirsute^ 4-5 cm. long; corolla yellow, ^vith brown center, 1.5-2 cm. broad. Prairies 

 and river valleys: 111. — Ark. — Tex. — Colo. Plairi — SubmonL My-Jl. 



8. P, virginiana Mill. Stem 3-10 dm. high, erect, angular, more or loss 

 hirsute; leaf -blades 3-6 cm. long, hirsutulous; calyx hirsute or puberulent; corolla 

 1.5-2.5 cm. broad, sulphur-yellow, with purplish center; berry reddish. Prairies, 

 river valleys, and cultivated ground: N.Y. — Fla. — Tex. — Muut. Plain — Sub^ 

 monL Ap-0. 



9. P. heterophylla Nees. Stem 3-10 dm. high, erect or decumbent and 

 spreading, puberulent and villous, viscid; leaf-blades 5-10 cm. long, usually 

 broadly cordate, acute or acuminate, thick, more or less sinuately toothed, 

 densely pubescent and very viscid; calyx viscid- villous, in fruit ovoid, somewhat 

 angled and sunken at the base; corolla 1.5-2 cm. wide, yellow, with purple cen- 

 ter; berrj^ yellow. Cultivated ground, sandv or loose soil, etc.: N.B. — Fla. — 

 Tex.— Utah— Sask. Plain— SubmonL My-S. 



10. P, hederaefolia A. Gray. Stem erect, rarely decumbent. 3-5 dm. high, 

 finely viscid-pubescent; leaf -blades 3-5-ribbed, 3-5 cm. broad; calyx finely 

 viscid-pubescent, in fruit ovoid, 5-10-angled, 2-3 cm. long, slightly sunken at 

 the base; corolla about 1.5 cm. wide. Rocky hills and drj^ plains: Tex.^Colo. 

 — Utah — s Calif.; Mex. Son, Ap-Au. 



11. P. comata Rydb. Stem about 5 dm. high, finely short-pubescent and 

 viscid, with a few scattered long hairs on the upper part; leaf-blades 3-5 cm. long, 

 somewhat repand or enthe, finely pubescent; cal3-x finely pubescent and villous, 

 in fruit 3-4 cm. long, rounded-ovoid, scarcely sunken at the base; corolla greenish 

 yellow, with brown center. Hillsides, cliffs, and dry plains: Neb. — Colo. — Tex. 

 Plain — SubmonL Jl-Au. 



12. P. rotundata Rydb. Stem diffuse or spreading, dichotomously zigzag- 

 branched, densely and finely viscid-pubescent; leaf-blades with truncate or sub- 

 cordate base, 2-4 cm. broad, sinuate-dentate; fruit mg c^lyx ovoid, scarcely 

 angled not sunken at the base; corolla 1.5 cm. broad, greenish yellow, with 

 brownish center. Plains: S.D.— Tex.— N.M.— Colo, Plain. Jl-S. 



13 P Fendleri A. Gray. Stem 3-6 dm. high, finely puberulent, somewhat 

 stellate, much branched; leaf-blades small, 1-4 cm long, deltoid, lanceolate 

 ovate or somewhat cordate, sinuately toothed; calyx somewhat steUate and 

 puberulent, in fruit rounded-ovoid, 2-3 cm. thick; corolla >t11ow with bro\ni 

 center; berry yellow. Dry plains and rocky places: N.M.— Colo.— Utah— Ariz.; 

 Mex. ' SubmonL My-Au. 



2, QUINCULA Raf. 



Perennial scurfy-granulifcrous perennials, with diffuse stems. Leaves 

 alternate, sinuately lobed or pinnatifid, somewhat fleshy Peduncles com- 

 monly in pairs from the axils of the leaves. Flo.v'ers perfect, regular erect 

 during anthesis. Calyx campanulate, accrescent and becommg bladd^^^ 

 fruit, 5-angled, reticulate, with 5 convergmg lobes. Corolla flat, rotate pen- 

 tagon^ i^olet or purple. Anthers opening by longitudmal slits. 

 Seeds comparatively few, flattened kidney-shaped, rugose-tuberculate. 



1 Q lobata (Torr.) Raf. Stem low, spreading or prostrate; leaf-blades 

 oblanceolate or spatulate to oblong sinuately l^^ed or more o^^^^^ 

 with rounded lobes; calyx in f^^it sharply 5-angled^^^^^^^ 



coroUa purplish, 2-3 cm. broad. Physalis lobata Torr. High plains and bluns. 

 Kans.— Tex.— Ariz.; Mex. Son.— SubmonL Ap^Au. 



3. CHAMAESARACHA A. Gray. 

 Scurfy nerennial herbs. Leaves alternate, entire or piniiatifid, with winged 

 nPtio^iJ SiSides sohtar>^ or 2 or 3 in the axils of the leaves. Calyx cam- 

 E^l'^ !!' ._^S nnlv lh?ht\v accrescent, not becoming bladder-like m fruit, 



