FLOWERING PLANTS AND FERNS OF ARIZONA 727 



4. Stem usually pubescent nearly or quite to the base, copiously so above; 

 leaflets elliptic to oblong-ovate, acutish or acute: corolla violet or 



whitish 4. P. foliosissimum. 



4. Stem glabrous or nearly so toward the base, sparsely pubescent above; 

 leaflets lanceolate, usually narrowly so, acute or acuminate (5). 



5. Corolla pale yellow 5. P. plavtjm. 



5. Corolla rich violet 6. P. filicintjm. 



1. Polemonium pauciflorum S. Wats., Amer. Acad. Arts and Sci. 



Proc. 23: 280. 1888. 



Chiricahua Mountains, Cochise County (Blumer 1626, Kusche in 

 1927), 7,500 to 9,500 feet, along brooks, July and August. South- 

 eastern Arizona and northern Mexico. 



2. Polemonium confertum A. Gray, Acad. Nat. Sci. Phila. Proc. 1863: 



73. 1864. 



^Polemonium lemmonii Brand, Pflanzenr. IV. 250: 44. 1907. 



San Francisco Peaks (Coconino County), 11,000 to 12,000 feet, 

 June to September, type of P. lemmonii from Mount Agassiz (Lemmon 

 in 1884). Wyoming to New Mexico and northern Arizona. 



The var. mellitum A. Gray (P. mellitum A. Nels.), with laxer, less 

 capitate inflorescences, has also been collected on the San Francisco 

 Peaks {Tourney in 1892, Thornier in 1907). 



3. Polemonium pulcherrimum Hook., Curtis's Bot. Mag. 57: pi. 2979. 



1830. 



San Francisco Peaks (Coconino County), Baldy Peak (Apache 

 County), 10,000 to 11,000 feet, July and August, Alberta and 

 British Columbia to New Mexico and northern Arizona. 



The form occurring in this State is subsp. delicatum (Rydb.) Brand 

 (P. delicatum Rydb.). The plant has a mephitic odor and is some- 

 times called skunkleaf. 



4. Polemonium foliosissimum A. Gray, Syn. Fl. 2 l : 151. 1878. 

 Kaibab Plateau, Coconino County (Eggleston 10233), White 



Mountains, Apache or Navajo County (Goodeling 563, 677), moist soil, 

 along streams, July. Colorado, Utah, New Mexico, and Arizona. 



Eggleston's specimen is less typical than those from the White 

 Mountains, being more sparsely pubescent, A white-flowered form, 

 subsp. albiflorum (Eastw.) Brand (P. albiflorum Eastw.), has been 

 collected along Oak Creek, Coconino County (Whiting and Sanders 

 756). 



5. Polemonium flavum Greene, Bot. Gaz. 6: 217. 1881. 



Buck Springs, Coconino County (Collom 775), Pinaleno Mountains, 

 Graham County (Peebles et al. 4492, 9858, etc.), 7,500 to 9,500 feet. 

 rich moist soil in coniferous forests, July and August. Southwestern 

 New Mexico and Arizona. 



6. Polemonium filicinum Greene, Pittonia 1: 124. 1887. 

 Hannigan, White Mountains, Greenlee County (Fulton 8208, 



Kearney and Peebles 12334), Chiricahua Mountains, Cochise County 

 (Blumer 1472, 1614), 8,000 to 9,500 feet, rich moist soil along brooks. 

 July and August. Southern New Mexico and eastern Arizona. 



There seems to be little but the corolla color to distinguish this from 

 P. flavum, and both forms are perhaps better regarded as varieties of 

 P. foliosissimum . 



