SOLANACEAE 167 



Leaves not hairy. 5. P. subglabrata. 



Leaves more or less hairy. 

 Leaves entire. 



Pubescence sparse, not branching. 6. P. lanceolata. 



Pubescence heavy, branching. 7. P. pumila. 



Leaves sinuate-dentate. 



Pubescence sparse. 8. P. Virginiana. 



Pubescence strong and dense. 9. P. heterophylla. 



1. P. pubescens L. Stems slender, ascending, villous-pubescent, 

 branching from the base, 6M8' high : leaves ovate, oblique at base, 

 nearly entire : fruiting calyx acuminate, sharply 5-angled. In low sandy 

 woods along the Missouri River. Uncommon. July-September. 



2. P. pruinosa L. Stems stout, the branches prostrate and widely 

 spreading, strongly pubescent: leaves ovate: fruiting calyx resembling 

 the last. In waste places, usually in hog- lots, Martin City, Sibley, Grain 

 Valley, Sheffield, Independence. June-October. 



3. P. Barbadensis Jacq. Resembles No. 1 but is stouter : stems erect, 

 branching above : leaves repand-dentate : fruiting calyx long acuminate. 

 In sandy woods along the Missouri River. Uncommon. July-Sep- 

 tember. 



4. P. Missouriensis Mackenzie & Bush, n. sp. Stems G'-IS' high, 

 viscid-pubescent : leaves ovate, sinuate-dentate, strongly oblique at base : 

 flowers 3"-4" broad : calyx lobes triangular : anthers purplish : fruiting 

 calyx ovoid, indistinctly angled, sunken at base : berry very glutinous. 

 Rather common on rocky hillsides. June-September. This is P. Laga- 

 scae Rydb., Vol. III., Britton and Brown, 111. Flora, 125, not P. Lagascae 

 R. &S. 



5. P. subglabrata Mackenzie & Bush, n. sp. l-2 high, nearly gla- 

 brous throughout : leaves ovate-lanceolate, slightly sinuate-dentate : 

 corolla 10" broad, yellow with a dark center : anthers purplish : fruiting 

 calyx 10-angled, sunken at base, acuminate. Common in waste places. 

 May-September. (Has been referred to P. Philadelphica Lam. ) 



6. P. lanceolata Michx. 6 / -12 / high, spreading : leaves oblanceolate 

 to spatulate : corolla 8 // wide, with a dark center : fruiting calyx scarcely 

 angled, not sunken at the base. Sparingly adventized at Sheffield. 

 May-June. 



7. P. pumila Nutt. l-2 high, erect : leaves ovate to oblong-lanceo- 

 late : corolla 8" wide, with a dark center : fruiting calyx angled, sunken 

 at base. Common on prairies and barrens in the southern part. May- 

 July. 



8. P. Virginiana Mill. l-2 high, more or less hairy : leaves ovate- 

 lanceolate, from strongly toothed to nearly entire : corolla 10 // wide, 

 with a dark center: fruiting calyx sunken at base, 5-angled. Frequent 

 in barrens throughout, especially in the southern part. May-June. 



9. P. heterophylla Nees. 6 x -3 high: leaves large, ovate, cordate, 

 more or less sinuately toothed : corolla about 10" wide, with a dark cen- 



