-'30 MAIA'ACEAE. 



2. Sidalcea neo-mexicana A. Gray. (S. malvacfolia of Coult. Man.) In 

 niouniain valleys from W'yo. and Utah to N. M. and southern Calif.; also 

 Sonera. — Alt. 6000-10,000 ft. — Pitkin; La Veta; Parlin, Gunnison Co.; Grizzly 

 Creek ; Marshall Pass ; Grayback mining canips and Placer Gulch ; Sangre 

 de Cristo Creek; Piedra ; valley of Arkansas; Calhan ; Buena Vista; Bear 

 River, Routt Co.; North Park; Soda Spring near north fork of the Platte; 

 Bear River at Steamboat Springs; Grizzly Creek 16 miles north of Walden ; 

 Elk River. 



4. MALVASTRUM A. Gray. False M.\llo\v. 



Plant canesceiit with stellate hairs : leaves 3-5-divided with 2-3-cleft divisions. 

 Plant low, I-:; dm. high : middle segment of the leaves slightly longer than 



the others ; raceme crowded. i. M. coccineuin. 



Plant tall. 3-4 dm. high ; middle segment of the leaves usually half longer 

 than the others ; raceme elongated. 2. M. elatiim. 



Plant lepidote and silvery with scale-like peltate hairs ; leaves 3-parted with nar- 

 rowly linear divisions or the upper simple and filiform. 3. M. leptophyllum. 



1. Malvastrum coccineum (Pursh) A. Gray. On plains and in sandy valleys 

 from Sask. and Ore. to Iowa, Tex. and Utah. — Alt. 4000-9000 ft. — Ft. Col- 

 lins ; Cimarron ; Deer River ; Manitou ; Cafion City ; Arboles ; Cucharas 

 River below La Veta; Sangre de Cristo Creek; mesas near Pueblo; Trinidad; 

 along Platte River, Denver ; Mancos ; New Windsor, Weld Co. ; Rocky 

 Ford ; Montrose ; Lamar ; Quimby ; Ouray ; Horsetooth Gulch ; Grand 

 Junction ; Colorado City. 



2. Malvastrum elatum (Baker) A. Nelson. {M. coccineum elatum Baker) 

 In dry valleys from southern Colo, and Utah to N. Mex. — Salida. 



3. Malvastrum leptophyllum A. Gray. In dry places from western Texas 

 to southern Utah. — Valley of San Juan and La Plata (Brandegee) ; McElmo 

 Creek (Eastwood). 



5. SPHAERALCEA St. Hil. Globe- m.\llow. 



Carpels glabrous or canescent, not hirsute, lower part reticulated ; leaves small, 

 not maple-like. 

 Leaves lanceolate: fruit not depressed; carpels with cusp. i. 5". cuspidata. 

 Leaves round-ovate to reniform in outline ; fruit depressed globose ; carpels 

 not cuspidate-tipped. 2. S. marginata. 



Carpels thin, hirsute, the lower portion not reticulate ; leaves large, maple-like. 

 Sepals lanceolate or ovate-lanceolate ; bractlets subulate, three-fourths as long 



as the sepals or more. 3. A. Crandallii. 



Sepals broadly triangular-ovate ; bractlets scarcely more than half as long 

 as the sepals. 

 Calyx and pedicels finely stellate ; bractlets subulate ; petals 2-2.5 cm. long. 



4. A. rivularis. 

 Calyx and pedicels hirsute with branched hairs ; bractlets lanceolate ; petals 

 3 cm. or more long. 5. A. grandiflora. 



1. Sphaeralcea cuspidata (A. Gray) Britton. (S. angustifolia cuspidata 

 A. Gray; 5". stcllata T. & G. ; Sida stellata Torn; not Cav.) In dry ground 

 from Kans and Colo, to Tex. and Ariz.; also Sonora. — Cafion City; Pueblo; 

 Rock}' Ford. 



2. Sphaeralcea marginata York. {Malvastrum Munroanum S. Wats., in 

 part; not Malva Mttnroana Dougl.) In dry places in western Colo, and 

 northern N. M. — Alt. up to 6000 ft. — McElmo Canon ; Grand Junction. 



