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 em. long; lobes broadly ovate: corolla blue or 

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

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



APPLE-OF-PEEtJ. 



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. pruinosa. 



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. TieteropTiylla. 



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

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

 cent, ovate- cor date, 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 em. long, 

 ovoid-cordate : berry yellow or green. Eare, 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 repand-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-angled 

 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. Kootstoek 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. 



