MALVACEAE. 229 



Order 33. MAL VALES. 

 Family 86. MALVACEAE Neck. Mallow Family. 



Style-branches filiform, longitudinally stigmatose anteriorly ; carpels numerous, 

 indehiscent, containing a single ovule and a reniform seed. 

 Stamens simply monadelphous ; flowers involucelled. 



Petals notched at the apex ; carpels beakless without internal processes. 



I. Malva. 

 Petals erose at the apex ; carpels beaked, with an internal process above 

 the seed. 2. Callirrhoe. 



Stamens united in a double series ; flowers without involucels. 



3. SiDALCEA. 



Style-branches terminated by a capitate stigma. 



Lower seed at least from an ascending ovule ; calyx more or less bractioled. 

 Ovule and seed solitary, conformed to the rounded cavity of the carpel. 



4. Malvastrum. 

 Ovules 1-3 and seeds 1-2 ; the cells of the carpels more or less extended 



and empty above. 5. Sphaeralcea. 



Lower seed at least resupinate-pendulous ; no involucels under the calyx, or 

 these represented by 1-3 setaceous bractlets. 



Carpels i-ovuled, the cell filled with "the seed. 6. Sida. 



Carpels 3-9-ovuled, dehiscent apically and dorsally. 7. Abutilon. 



1. MALVA L. Mallow. 



Calyx not reflexed in fruit. 



Plant erect ; leaves crisp, 1 . M. crispa. 



Plant procumbent; leaves not crisp. 2. M. rotundifoUa. 



Calyx large, reflexed-spreading in fruit. 3. M. paruiAora. 



1. Malva crispa L. In waste places, escaped from gardens, from N. S. 

 and S. D. to N. J. and Colo.— Ft. Collins. 



2. Malva rotundifolia L. In waste places, naturalized from Europe; from 

 Mass. and Minn, to Ga. and Utah. — Alt. up to 7500 ft.— North of La Veta; 

 Hotchkiss ; near Boulder ; Denver. 



3. Malva parviflora L. In waste places, naturalized from Europe; from 

 Mont, and B. C. to Fla., Tex. and Calif. — Hotchkiss. 



2. CALLIRRHOE Nutt. Poppy Mallow. 



I. Callirrhoe involucrata (T. & G.) , A. Gray. On plains and in sandy 

 soil from Mo. and Wyo. to Tex. and Utah. — Ft. Collins; Cheyenne Cation; 

 Yuma; Colorado Springs. 



3. SIDALCEA A. Gray. 



Inflorescence and calyx densely stellate ; corolla cream-colored. 



1. 6'. Candida. 

 Inflorescence and calyx sparingly hirsute ; corolla purple or white. 



2. S. neo-mexicana. 



1. Sidalcea Candida A. Gray. Along streams and in wet meadows from 

 Wyo. to N. M. and Utah. — Alt. 7000-13,000 ft. — Lake City; La Veta; Steam- 

 boat Springs ; Parlin, Gunnison Co. ; Grizzly Creek ; Cameron Pass ; above 

 Dix Post Office; Wahatoya Creek; West Spanish Peak; Cucharas Valley; 

 Michigan Hill. 



