754 SOLANACEAE 



10-ribbed. Coro 

 darker. brouTiish 



la yellow or whitishj campanulate or funnelfornij often with a 

 or purplish center, plicate in the bud. Stamens adnate to the 



base of the corolla; anther-sacs opening by longitudinal slits. Stigma minute. 



Seeds numerous, kidnev-shaned. flattenpid. fin^lv niffpH. 



Annuals, with brancliing roots; fruiting calyx cordate-ovoid, aciuninate, strongly 5-angled. 

 Leaves very oblique, cordate, sinuate-dentate; fruiting calyx ovoid. 



1. P. prtiinosa. 

 Leaves orbicular or broadly ovite, sinuately crenate, scarcely cordate and scarcely 

 oblique at the base. 2. P. neomexicana. 



Perennials, with horizontal rootstocks or rarely with woody caudices. 



Pubescence if any not stellate, although in P. purnila with some branched hahs. 

 Leaves and stem glabrous or the veins of the former and the upper part of the 



latter with scattered appressed hairs. 

 Leaves ovate, ovate-lanceoiate, or oval. 3. P. subglabrata. 



Leaves lanceolate, oblanceolate, or linear. 4. P. longifolia. 



Leaves and stem more or less pubescent with spreading hairs. 



Pubescence sparse, consisting of flat, sometimes jointed hairs, scarcely viscid. 

 Fruiting caljTc ovoid, scarcely angled and scarcely sunken at the base; 



leaves thick, oblanceolate or spatulate to rhombic, subentire. 

 Leaves oblanceolate or spatulate; hairs all simple. 



Pubescence very short; leaves narrowly oblanceolate. 



5. P. polypfiylla. 



Pubescence long; leaves spatulate. 6. P. lanceolata. 



Leaves broader, often rhombic; hairs on the lower surface branched. 



7. P. pumila. 

 Fruiting calyx pyramidal-ovoid, obtusely 5-angled and deeply sunken at 



the base; leaves ovate to lanceolate, generally more or less toothed. 



8. P. virginiana. 



Pubescence dense, viscid, partly of fine and short, partly of long flat, jointed 



hairs. 

 Leaves large; blades over 5 cm. long, more or less cordate; long flat Iiairs 

 numerous. 9. P. ficlcrophyUa. 



Leaves smader; blades less than 5 cm. long; long flat hairs few, mostly 



confined to the calyx. 

 Plant erect or ascending. _. 



Leaf-blades reniform or rounded-cordate, coarsel\ -sinuately toothed. 



10. P. hederaefolia. 



Leaf-blades roimded-ovate or rhombic. 11. P. comata. 



Plant prostrate, diffuse ; leaf-blades nearly orbictxlar. 12. P. rotundata. 

 Pubescence flne, grayish, at least in part stellate. 13. P. Fendlen. 



1. P. pruinosa L. Stem stout, finely villous and somewhat viscid, erect or 

 spreading, 3-6 dm. high; leaf-blades 3-10 cm. long, finely pubescent, sinuately 

 toothed; cbIjx viscid, in fruit 2-3 cm. long, sunken at the base; corolla 3-8 mm. 

 in diameter; berry yellow or green. Cultivated ground and waste places: Mass. 

 — Fla.— Tenn. — la.; adv. in Colo. Plain. Jl-S. 



2. P. neomexicana Rydb. Stem stout, obtusely angled, finely pubescent 

 and slightly viscid, 3-6 dm, high, erect; leaf-blades 3-5 cm. long, rounded or 

 truncate, finely pubescent* calyx finely pubescent, sharply angled, deeply sunken 

 at the base; teeth lanceolate, acmninate. Loose soil: N.M. — Colo. — L. Cam. 

 Son. Je-Au. 



3. P. subglabrata Mack. & Bush. Stem 3-9 dm. high; leaf-blades 3-7 cm- 

 lone, entire or undulate, elabrous or verv i 



cm. broad. River valleys, sandy or cultivated ground: 6nt. — Fa. — Ark. — Colo. 

 — Ida. Plain — Submont. Je-S. 



4. P. longifolia Nutt. Stem tall, 5^10 dm. high; leuf-blades entire-margined 

 or somewhat repand; calyx glabrous or nearly so, in fruit ovoid, about 3 cm. long, 

 corolla 1-2 cm. broad, yellow, with brownish center; berry yellow, the lower 

 portion and the stipe glutinous. River valleys and rich soil: la. — Ark. — Ariz. 

 Mont. ; Mex. Plain — SubmonL My-Au. 



6. P. polyphylla Greene. Stem erect, branched, 1.5-2.5 dm. high, angular 



2^ 



greenish yellow, with greenish center. Plains: Colo. Plain— Suhmont Jh 

 6. P. lanceolata Michx. Stem 



hirsute: leaf-blades anutft or nht.ns*: 



3-6 dm. high, erect or spreading 

 entire or rarely wavy, thickish 



hirsute or strieose: corolla dull 



