238 SOLANACEAE. 



1. P. Physalodes (L.) Britton. Plants nearly glabrous, 3-9' dm. tall: leaf- 

 blades ovate, oval, or oblong, 5-15 cm. long, angulate-lobed or sinuate: calyx 

 1.5 cm. long, becoming 3.5 cm. long; lobes broadly ovate: corolla blue or 

 violet, about 2.5 cm. wide: berries 1.5-2 cm. in diameter. — Bather common, 

 in cultivated and waste grounds and on roadsides. Nat. of Peru. — Sum. — 

 Apple-of-Peru. 



2. PHYSALIS L. Annual or perennial herbs. Leaf-blades entire or 

 sinuate. Flowers axillary, nodding, mostly solitary. Calyx bladder-like at 

 maturity: lobes short and converging. Corolla mainly yellow or whitish, often 

 dark in the center. Ovary 2-celled. — Sum. — Ground-cherry. 



Plants annual, with fibrous roots. 



Foliage manifestly pubescent even in age : berry yellow or green. 



1. P. priiinosa. 

 Foliage glabrous, at least in age : berry red or purple. 2. P. subglabrata. 

 Plants perennial by rootstocks and roots. 



Leaves glabrous. 2. P. subglabrata. 



Leaves pubescent. 



Stem strigose with flat hairs : berry reddish. 3. P. virginiana. 



Stem clammy-pubescent with spreading hairs : berry 



yellow. 4. P. lieteropliylla. 



1. P. pruinosa L. Sterns stout, generally erect or often ascending and obtusely 

 angled, finely villous or viscid: leaf -blades firm, 3-10 cm. long, finely pubes- 

 cent, ovate-cordate, generally very oblique at the base, and deeply sinuate- 

 toothed, the teeth broad and often obtuse: peduncles 2-4 mm., at maturity 

 about 1 cm. long: calyx villous or viscid; lobes as long as the tube, narrow, 

 but without subulate tips : corolla 3-8 mm. in diameter : anthers yellow or 

 tinged with purple: fruiting calyx firm, pubescent, reticulate, 2-3 cm. long, 

 ovoid-cordate : berry yellow or green. — Bare, in rich soil. 



2. P. subglabrata Mack. & Bush. Stems 0.5-1.5 m. tall, dichotomously 

 branched, glabrous or sometimes slightly pubescent with sparse and short hairs 

 on the upper parts: leaf -blades ovate to ovate-lanceolate, often very oblique 

 at the base and more or less acuminate, entire or reisand-denticulate, 6-10 cm. 

 long: peduncles slender, often in pairs, 1-2 cm. long, generally longer than the 

 flower: calyx glabrous, or minutely ciliolate; lobes ovate-lanceolate or tri- 

 angular, sometimes broadly ovate and unequal, generally equalling the tube: 

 corolla yellow or greenish-yellow with a purplish throat, 1.5-2.5 cm. in diam- 

 eter: anthers tinged with purple: fruiting calyx at first somewhat 10-augled 

 and sunken at the base, at maturity, often filled with or even burst by the large 

 red or purple berry. — Common, in fields and on roadsides. 



3. P. virginiana Mill. Kootstock fleshy: stems 0.5-1 m. tall, dichotomously 

 branched, somewhat angular, pubescent with appressed hairs, sometimes some- 

 what glandular, or in some forms nearly glabrous: leaf -blades ovate-lanceolate, 

 tapering to both ends, 3-6 cm. long, generally sinuately dentate, often yellowish- 

 green : calyx strigose-hirsute, or at least puberulent ; lobes triangular or 

 broadly lanceolate, nearly equalling the tube in length : corolla sulphur-yellow 

 with purplish spots, 1.5-2.5 cm. in diameter: fruiting calyx pyramidal-ovoid, 

 5-angled and sunken at the base : berry reddish. — Occasional, in rich, often 

 dry soil. 



4. P. heterophylla Nees. Eootstock slender: stems 0.5-1 m. tall, erect, or 

 later generally decumbent and spreading, viscid and glandular-villous with 

 moderately long jointed flat hairs: leaf -blades generally over 5 cm. long, 

 usually broadly cordate, often acute and very rarely with an acumination, 

 thick, sinuately toothed, or sometimes subentire: calyx long-villous ; lobes tri- 

 angular, generally shorter than the tube: corolla 1-1.5 cm. in diameter: berry 

 yellow. — Occasional, in rich soil, especially in fields. 



