WOOTON AND STANDLEY FLORA OP NEW MEXICO. 425 



11. MALVASTRUM A. Gray. 



Low perennial herbs with branched stems, simple or lobed leaves, and small axillary 

 clusters of flowers, these by the reduction of the leaves forming narrow panicles; calyx 

 subtended by 2 or 3 small bracts; petals reddish; fruit a capsule consisting of numer- 

 ous 1 or 2-ovuled, 1-seeded, 1-celled carpels. 



KEY TO THE SPECIES. 



Plants densely silvery -lepidote with peltate scales; divisions of 



the leaves linear, mostly entire 1. M. leptophylluvi. 



Plants loosely canescent with stellate hairs; divisions of the leaves 

 broader than linear, usually lobed. 

 Flowers 8 mm. long or less; leaves 12 mm. long or shorter, the 



divisions very narrow 2. M. micranthum. 



Flowers more than 10 mm. long; leaves 20 mm. long or more, 

 the divisions broader. 

 Plants 30 to 40 cm. high, slender; racemes loose, elon- 

 gated; terminal lobe of the leaves much longer 



than the others 3. M. e latum. 



Plants 10 to 20 cm. high, stout; racemes crowded; ter- 

 minal segments of the leaves only slightly longer 

 than the others 4. M. coccineum. 



1. Malvastrum leptophyllum A. Gray, PI. Wright. 1: 17. 1852. 

 Type locality: Western Texas. 



Range: Southern Utah and Colorado to Texas and Mexico. 



New Mexico: Fort Cummings; Socorro Mountain; Magdalena Mountains; Farming- 

 ton; Carrizozo; west of Roswell; Carrizo Mountains; San Andreas Mountains. Dry hills 

 and plains, in the Upper Sonoran Zone. 



2. Malvastrum micranthum Woot. & Standi. Contr. U. S. Nat. Herb. 16: 147. 1913. 

 Type locality: Near Tiznitzin, New Mexico. Type collected by Wooton (no. 



2673). 



Range: Northwestern New Mexico. 



New Mexico: Near Tiznitzin; mountains southeast of Patterson. Upper Sonoran 

 Zone. 



3. Malvastrum elatum (Baker) A. Nels. Bot. Gaz. 34: 25. 1902. 

 Malvastrum coccineum elatum Baker, Joum. Bot. Brit. & For. 29: 171. 1891. 

 Type locality: Bed of the Limpio River, western Texas. Type, Wright's no. 41. 

 Range: Arizona and Colorado to western Texas. 



New Mexico: Ojo Caliente; Gallup; Zuni; Las Vegas; Pecos; Reserve; Water Can- 

 yon; CarrizaUllo Mountains; Mangas Springs; San Augustine Ranch; Horse Camp; 

 White Mountains. Open slopes, Upper Sonoran and Transition zones. 



4. Malvastrum coccineum (Pursh) A. Gray, Mem. Amer. Acad. n. eer. 4: 21. 1849. 

 Cristaria cocdnea Pursh, Fl. Amer. Sept. 453. 1814. 



Sida dissecta Nutt.; Torr. & Gray, Fl. N. Amer. 1: 235. 1840. 



Malvastrum cockerellii A. Nels. Bot. Gaz. 34: 24. 1902. 



Type locality; "On the dry prairies and extensive plains of the Missouri." 



Range: Oregon and Saskatchewan to Arizona, Texas, and Iowa. 



New Mexico: Common throughout the State. Open hills and plains, in the Upper 



Sonoran Zone. 



12. SIDA L. 



Prostrate or erect herbaceous perennials, with simple, alternate, mostly narrow leave; 

 and slender stems; flowers solitary or in small axillary clusters, yellow or oranges 

 calyx more or less 5-angled, sometimes accrescent in fruit, not bracteate; carpels 5 or 

 numerous, 1-celled, 1-ovuled, indehiscent, or dehiscent at the apex. 



