110 University of California Publications in Botany. [VOL. 3 



Summit of Mt. Graybaek, 3500 m. alt., in the Alpine Zone, 

 Wright, Blasdale, Mrs. C. M. Wilder; common in the High 

 Sierras and Rocky Mts. 



3. A. speciosa E. Nelson, Proc. U. S. Nat. Mus. xxiii. 705 

 (1901). 



Cespitose, with many short sterile shoots forming a leafy mat 

 from which arise the flower-bearing stems, these .7 to 2 dm. high 

 and terminating in a single rounded cluster of showy heads: 

 herbage tomentose throughout: leaves spatulate, the cauline 

 varying to linear, 1 to 2 cm. long, 5 mm. or less wide : involucre 

 of pistillate heads fully 6 mm. high, closely imbricated ; its outer 

 bracts narrowly oblong, obtuse; the inner ones linear, acute, all 

 with rosy or nearly white tips : staminate plant unknown. 



First collected in Bear Valley, San Bernardino Mts., by 

 Parish; Dry Lake, Mt. San Gorgonio, in the same range; very 

 plentiful at a few places in Tahquitz and Tamarack valleys, San 

 Jacinto Mt. It belongs to the upper edge of the Transition Zone. 



4. A. marginata Greene, Pitt. iii. 290 (1898). 



Cespitose, with many short sterile leafy shoots, the flowering 

 stems from a few cm. to 2 dm. high and bearing a single terminal 

 cluster of pale-colored heads: herbage hoary-tomentose, except 

 that the upper surface of the leaves is green and glabrous or only 

 lightly pubescent : basal leaves spatulate, obtuse, mucronate, com- 

 monly 1.5 to 2 cm. long and 6 mm. broad ; leaves of the flowering 

 stems few, linear, sessile: heads few, the lower ones short-pedun- 

 culate, the upper sessile: involucre of pistillate heads broadly 

 campanulate, 8 mm. broad and high (in California plants), con- 

 spicuously imbricated ; its bracts with a greenish tinge but the 

 conspicuous membranous tips pure white, the long inner ones 

 very narrow and acute. 



San Bernardino Mt., on the "trail to South Fork Santa Ana 

 River via Barton Flats, elevation 7200 ft.," Mrs. Wilder, no. 489 ; 

 near Flagstaff, Arizona, Wilson, no. 115. Heretofore known only 

 from New Mexico and Colorado. 



