FLOWERING PLANTS AND FERNS OF ARIZONA 381 



in coniferous forest, June to October, type of H. sitgreavesii from 

 between Williams and Flagstaff, Coconino County (Woodhouse in 

 1851). Western Texas and southern Utah to Arizona, California, 

 and northern Mexico. 



An attractive plant, suitable for rock gardens in cool climates. A 

 depauperate form (f. pumila Rosendahl et al.) is found on the San 

 Francisco Peaks at 10,000 to 12,000 feet. Having practically the 

 same range in Arizona as the typical form, but less common is var. 

 leptomeria (Greene) Kearney and Peebles (H. leptomeria Greene) 

 which has the inferior portion of the ovary narrower. 



3. Heuchera sanguinea Engelm. in Wisliz., Mem. North Mex. 107. 



1848. 



Southern Apache County to Cochise, Santa Cruz, and Pima 

 Counties, 4,000 to 8,000 feet, moist shaded rocks, March to Septem- 

 ber. Arizona and northern Mexico. 



Coralbells. The showiest of the Arizona species, with bright-pink 

 to carmine flowers, often cultivated as an ornamental. Distinguished 

 by its more pubescent calyx, with longer hairs, is var. pulchra (Rydb.) 

 Rosendahl (H. pulchra Rydb.) occasional throughout the range of the 

 species. It is not a well-marked variety. 



4. Heuchera parvifolia Nutt. ex Torr. and Gray, Fl. North Amer. 



1:581. 1840. 

 The typical form of the species, widely distributed in the Rocky 

 Mountains, apparently is not found in Arizona, but two varieties occur. 

 These are: (1) var. arizonica Rosendahl et al., apparently limited to 

 Coconino County, on both sides of the Grand Canyon, 7,000 to 9,000 

 feet, type from the Grand Canyon (Eastwood 5775); and (2) var. 

 flavescens (Rydb.) Rosendahl et al. (H. flavescens Rydb.), found in the 

 White Mountains (Apache County), and in Navajo County, 7,000 to 

 11,500 feet. In var. arizonica the petioles are hirsute or villous, 

 whereas in var. flavescens they are commonly glabrous or slightly 

 glandular-puberulent. 



5. Heuchera eastwoodiae Rosendahl, Butters, and Lakela, Minn. 



Studies Plant Sci. 2 : 152. 1936. 

 Yavapai and Gila Counties, 5,000 to 6,000 feet, and perhaps higher, 

 May to August, type from Senator Mine near Prescott (Eastwood 

 17659). Known only from central Arizona. 



6. Heuchera novomexicana Wheelock, Torrey Bot. Club Bui. 17:200. 



1890. 

 Coconino County, near Flagstaff (Leiberg 5538), and at Deboschi- 

 beko (Darsie in 1933), 6,000 to 7,000 feet, June. New Mexico and 

 Arizona. 



7. Heuchera glomerulata Rosendahl, Butters, and Lakela, Minn. 



Studies Plant Sci. 2:155. 1936. 

 Pinaleno Mountains, Graham County, 4,600 feet (Eggleston 19913), 

 Pinery Canyon, Chiricahua Mountains (Stone 385, the type collec- 

 tion). Known only from southeastern Arizona. 



3. LITHOPHRAGMA. Woodland-star 



Plant herbaceous, perennial, small, with slender rootstocks bearing 

 bulblets; stems slender; leaves mostly basal, with round, variously 



