FLOWERING PLANTS AND FERNS OF ARIZONA 1033 



144. HIERACIUM. 22 Hawkweed 



Perennial herbs, sometimes seapose; leaves linear to oblong or 

 obovate, entire or merely toothed; heads small, yellow, rarely white 

 or rosy ; involucre of several equal phyllaries and a few short calyculate 

 bractlets; achenes columnar, or sometimes narrowed upward but not 

 beaked, about 10-ribbed; pappus of brownish or white capillary 

 bristles. 



Key to the species 



1. Basal leaves villous-lanate 1. H. prixglei. 



1. Basal leaves pilose, hirsute, or hispid, not villous-lanate (2). 

 2. Plant somewhat glaucous, glabrous except for the long-pilose basal leaves 

 and base of the stem and the sometimes sparsely ciliate lower stem 

 leaves; stem leafy to the inflorescence, the leaves elongate, narrowly 



linear; corollas rose-color 2. H. carneum. 



2. Plant usually not glaucous, usually hairy on the stem; stem leaves when 

 present not elongate or narrowly linear; corollas not rose-color (3). 

 3. Stem decidedly leafy (the leaves mostly oblong, with a broad, more or 



less clasping base) and denstly long-setose 3. H. lemmoni. 



3. Stem (scape) leafless or with 1 or 2 small leaves or bracts (these not at all 

 clasping) and rather sparsely setose 4. H. fexdleri. 



1. Hieracium pringlei A. Gray, Amer. Acad. Arts and Sci. Proc. 19: 



69. 1883. 

 Huachuca Mountains (Cochise County), Santa Rita Mountains 

 (Pima County), probably about 6,000 feet, June to September, type 

 from the Santa Rita Mountains (Pringle). Southwestern New Mex- 

 ico and southeastern Arizona. 



2. Hieracium carneum Greene, Bot. Gaz. 6: 184. 1882. 

 Huachuca Mountains (Cochise County), Patagonia Mountains 



(Santa Cruz County), Rincon Mountains (Pima County), 6,000 to 

 7,000 feet, July to September. Southwestern Texas to southeastern 

 Arizona and adjacent Mexico. 



3. Hieracium lemmoni A. Grav, Amer. Acad. Arts and Sci. Proc. 



19: 70. 1883. 

 Mountains of Cochise and Pima Counties, 7,000 to 8,000 feet, July 

 to October, type from Cave Canyon, Huachuca Mountains (Lem- 

 mon). Southwestern New Mexico and southeastern Arizona. 



4. Hieracium fendleri Schultz Bip., Bonplandia 9: 173. 1861. 



Hieracium fendleri var. discolor A. Gray, Amer. Acad. Arts and 

 Sci. Proc. 19: 69. 1883. 



Navajo Mountain and Grand Canyon (Coconino County) south- 

 ward to the mountains of Graham, Cochise, and Pima Counties, 6,000 to 

 9.500 feet, mostly in pine forests, May to August. South Dakota to 

 New Mexico, Arizona, and Mexico. 



The commonest and most widely distributed species of hawkweed 

 in Arizona. H. fendleri var. discolor was based on specimens collected 

 in the Santa Rita and Huachuca Mountains bv J. G. Lemmon and 

 C. G. Pringle. 



22 Reference: Robinson, B. L., and Greenman, J. M. revision ofthk Mexican wimkntk \i lmerican 

 species of hieracium. Amer. Acad. Arts and Sci. Proc. 40 (Gray Herbarium Contrib. 

 28): 14-24. 1904. 



