23. Malvaceae 81 



native of Eur. ; Champai<)^n and Peoria counties. July-Aug. 



Round-leaved Mallow. [M. pusilla With.] 



M. rotundifolia L. 



3. Stems prostrate or ascending; petals 10-12 mm long; carpels 

 12-15, pubescent; waste places; very common; nat. from 



Eur. May-Sept. [M. roturidifolia sensu auth., non L.] 



M. neglecta Wallr. 



1. Petals 3-8 times as long as the sepals. 

 4. Leaves 3- to 7-lobed; petals purple; carpels wrinkled; occasional 

 in waste places as a garden escape; introd. from Eur. Aug.- 

 Sept M. sylvestris L. 



4. Leaves deeply dissected; petals pink; carpels pubescent; road- 

 sides, escaped from cult. ; native of Eur. June. Musk Mallow 

 M . nioschata L. 



3. Callirhoe Nutt. — Poppy Mallow 

 L Petals usually white or pinkish, 1-1.5 cm long, flowers without 

 subtending bracts; carpels pubescent; roadsides and waste 

 places, occasional. May- June. [C. digit at a sensu auth., non 

 Nutt.] C. alcaeoides (Michx.) A.Gray 



1. Petals purple. 



2. Leaves roundish in outline, palmately 5- to 7-parted; stems 

 procumbent; peduncles 1 -flowered; plants hispid-pubescent; 

 carpels rugose-reticulate: cultivated ground and roadsides; 

 occasionally adv. from west of the Mississippi R. May-Aug. 

 C. involucrata (T. & G.) A.Gray 



2. Leaves mostly triangular or halberd-shaped, crenate; stem erect; 

 peduncles several-flowered; plants stellate-pubescent; carpels 

 pubescent, not rugose; sandy soil, chiefly in the northern 

 counties. June-Sept C. triangulata (Leavenw.) A.Gray 



4. Malvastrum A. Gray — Globe Mallow 

 M. angustum A. Gray. Dry ground, rare; La Salle and Rock 

 Island counties. July-Aug. [Sidopsis hispida (Pursh) Kydh.; Sphacral- 

 cea angusta (A. Gray) Fern.]. 



5. Sida L. 



S. spinosa L. Fields and waste ground, common; native of trop. 

 Am. July-Oct. 



6. Anoda Cav. 

 A. cristata (L.) Schlecht. Escaped from cult.; Hancock Co. 



7. Napaea L. — Glade Mallow 

 A'^. dioica L. Allu\ial soil, locally throughout the northern half of 

 111. July-Aug. 



