982 



SOLANACEAE 



b. Fruiting calyx obtusely 5-10-angled, scarcely sunken at the base. 



Corolla yellow, the center sometimes a little darker but not brown or 



purple. 

 Peduncles much longer than the fruiting calyx : corolla 5-8 mm. in 



diameter. 8. P. pendula. 



Peduncles scarcely exceeding the fruiting calyx : corolla 8-10 mm. in 



diameter. 9. P. angulata. 



Corolla yellow with a distinctly brown or purple center. 



Peduncles scarcely longer than the flowers : corolla 10-15 mm. in diam- 

 eter. 



Peduncles longer than the flowers : corolla 15-25 mm. in diameter. 

 B. Perennials, mostly with horizontal rootstocks. 

 Pubescence not of stellate hairs. 



Pubescence sparse, seldom, if at all, glandular or viscid. 



Leaves glabrous : upper part of the stem, calyx and veins of the leaves 



with few, if any, short appressed hairs. 

 Fruiting calyx ovoid, nearly filled with the berry, scarcely sunken at 



the base. 

 Plants tall, erect : leaf-blades thin. 



Leaf-blades ovate or ovate-lanceolate. 12. P. subglabrata. 



Leaf-blades lanceolate, linear or oblanceolate. 13. P. longtfolia, 



Plants low, spreading : leaf-blades fleshy, elliptic-oblong, tapering 



into a winged petiole. 14. P. Texana. 



Fruiting calyx pyramidal, very much inflated and deeply sunken at 



the base. 15. P. macrophysa. 



Leaves and stem sparingly hairy with longer, flat, spreading or reflexed, 

 often jointed, and in P. pumila branched, hairs (some of the species 

 are slightly viscid). 

 Fruiting calyx ovoid, scarcely angled and scarcely sunken at the 



base : leaf- blades thick, subentire. 



Leaf-blades obovate or spatulate : hairs all simple. 16. P. lanceolata. 



Leaf-blades broader, inclined to be rhomboid : hairs of the lower 



surface of the leaves branched. 17. P. pumila. 



Fruiting calyx pyramidal, more or less 5-angled and deeply sunken 



at the base : leaf-blades thin. 



Fruiting calyx ovoid-pyramidal : leaf-blades mostly ovate or lan- 

 ceolate, tapering at the base. 



Leaf-blades more or less sinuately dentate. 18. P. Virginiana. 



Leaf-blades subentire or wavy margined. 



Leaf-blades firm : plant not at all viscid. 19. P. rigida. 



Leaf-blades very thin : plant more or less viscid above when 



young. 20. P. intermedia. 



Fruiting calyx oblong-pyramidal or nearly cylindrical : leaf-blades 



broadly ovate, truncate or cordate at the base. 



Leaf-blades coarsely toothed and reticulate. 21. P. arenicola. 



Leaf-blades subentire, the veins not prominent. 22. P. ciliosa. 



Pubescence denser, viscid or glandular, generally consisting of a mixture of 



short fine hairs and long flat jointed ones. 

 Leaf-blades generally over 5 cm. long, more or less cordate. 



Apex, and teeth of the leaves rounded. 23. P. sinuata. 



Apex, and teeth (if any) of the leaves acutish to acuminate. 



Stem densely and leaves more sparingly pubescent with very long 



(2 mm. or more) white hairs. 

 Stem erect : anthers purple : leaf-blades rounded or subcordate 



at the base. 24. P. ambigua. 



Stem spreading : anthers yellow : leaf-blades usually cuneate 



or acute at the base. 25. P. nyctaginca. 



Stem and leaves very densely pubescent with short, very viscid 



hairs : anthers yellow. 26. P. heterophylla. 



Leaf-blades generally 5 cm. long or less. 



Stem with long hairs. 22. P. ciliosa. 



Stem with very short hairs. 



Leaf-blades rounded, ovate or rhombic. 27. P. comata. 



Leaf-blades reniform or cordate. 28. P. hederatfolia. 



Pubescence mainly of stellate hairs. 



Plants densely white-pubescent or grayish pubescent. 

 Hairs all stellate. 



Leaf-blades cordate, reniform or" round, angulately toothed. 29. P. mollis. 



Leaf-blades elliptic, sometimes cordate at the base, to oblanceolate, 



subentire or repand. 30. P. viscosa. 



Hairs partly simple, partly stellate : leaf-blades oblong, subentire. 31. P. fuscomaculata. 



Plants nearly glabrous, except on the margins of the calyx-lobes, rarely stel- 

 late all over when young. 



Leaf-blades oblong, oblanceolate or spatulate, the lateral veins distinct. 32. P. Elliottii. 

 Leaf-blades linear, thick ; midrib prominent, the lateral veins obsolete. S3. P. angustifolia. 



1. Physalis pube"scens L. Annual, more or less villous and viscid. Stems much 

 branched, angled, often a little swollen at the nodes, sometimes nearly glabrous : leaf- 

 blades thin, 2-6 cm. long, ovate, acute or acuminate, at the base oblique, slightly cordate 

 and generally entire, upwardly repand-denticulate, or entire, pubescent, becoming nearly 

 glabrous except along the nerves : peduncles short, 3-5 mm., or at maturity about 1 cm. 

 long : calyx-lobes narrow, not subulate tipped : corolla 5-10 mm. in diameter, yellow, 

 with dark center : anthers usually purplish : fruiting calyx membranous, 2-3 cm. long, 

 pyramidal-ovoid, acuminate and more or less retuse at the base. 



In sandy soil, Pennsylvania ;to California, Florida and Central America. Also found in South 

 America and in India. 



