466 The Ohio Naturalist. [Vol. XII, No. 4, 



1. Leaves with shallow rounded lobes; flowers clustered in the axils. 2. 



1. Leaves deeply 5-7 lobed or pinnatified; flowers only in the upper axils. 4. 



2. Stems procumbent; root perennial; petals 1-2 times the length of the 



calyx. M. rotundifolia. 



2. vStems erect, annual or biennial. 3. 



3. Leaf margins not much crisped; biennial; petals 2-4 times the length of 



the cah^x. M. sylvestris. 



3. Leaf margins very much crisped; annual; petals 1-2 times the length of 



the calyx. M. crispa. 



4. Stem leaves 5-parted; the divisions pinnatified into linear lobes, carpels 



downy, cleft, the divisions broad. M. moschata. 

 4. Stem leaves deeply 5-lobed, carpels smooth. M. alcea. 



1. Malva sylvestris L. High ^Mallow. 



Biennial, erect or ascending, pubescent with spreading hairs; 

 leaves obicular and renifomi, tnnicate or cordate at the base; 

 flowers reddish purple, carpels about 10. In waste places and 

 along roadsides. Auglaize, Cuyahoga Co. 



2. Malva rotundifolia L. Roundleaf Mallow. 



Anmial or biennial, procumbent and spreading; leaves orbicular 

 renifomi; blades 2 inches wide, petioles about 6 inches long.; 

 flowers clustered in the axils, petals pinkish white with 3 reddish 

 nerves, carpels about 15. In fields and waste places. General. 



3. Malva crispa L. Curled Mallow. 



Annual, glabrous, or nearly so; leaves nearly orbicular with 

 shallow, angular, crenate lobes with wrinked crisped margins; 

 blades 5 inches wide; petioles 5 inches long; flowers 3^ inch long, 

 y2 inch in diameter. In waste places. No specimens. 



4. Malva alcea L. European Mallow. 



Perennial, procmnbent, pubescent. Stem leaves only once 

 5-7 parted or cleft, the lobes dentate or incised, blades 3 inches 

 long, 43^ inches wide, petiols 13^ to -ij^ inches long; flowers 

 1^ inches in diameter. In waste places. Escaped in Cuya- 

 hoga Co. 



5. Malva moschata L. Musk Mallow. 



Perennial, ptiljescent with long hairs. Basal leaves orbicular 

 with broad, rounded, dentate lobes; stem leaves deeply divided into 

 linear or crenate, pinnatified or cleft segments; stem leaf blades 

 2 inches long, 2 inches wide, petiols Ij^ inches long. Flowers 13^ 

 to 2 inches in diameter. In waste places. Northern part of the 

 State as far south as Muskingum Co. 



CALLIRRHOE Nutt. 



Herbs with lobed or divided leaves and showy flowers. Bracts 

 of the involucre 1-3, separate, or none. Petals ctmeate, often 

 toothed or flmbricate. Carpels beaked, 10-20, forming an ovulary 

 with equal number of cavities. Cavities 1-ovuled and 1-seeded. 



