WOOTON AND STANDLEY FLORA OF NEW MEXICO. 293 



2. BHODIOLA L. 



Perennials with woody, somewhat branching, thickened rootstocka; leaves flat and 

 comparatively thin; flowers dioecious or polygamous, 4 or 5-parted, in compact terminal 

 cymes; carpels erect; styles very short or none. 



KEY TO THE SPECIES. 



Petals yellowish, obtuse 1 . R. neomexicana. 



Petals purplish, acuminate 2. R. polygama. 



1. Rhodiola neomexicana Britton, Bull. N. Y. Bot. Gard. 3: .38. 1903. 



Type locality: Wliite Mountain Peak, New Mexico. Type collected by Wooton. 

 Range: White Mountains of New Mexico, in the Hudsonian Zone. 



2. Rhodiola polygama (Fvydb.) Britt. & Rose, Bull. N. Y. Bot. Gard. 3: 39. 1903. 

 Sedum polygamum Rydb. Bull. Torrey Club 28: 283. 1901. 



Type locality: West Spanish Peak, Colorado. 

 Range: Mountains of Colorado and New Mexico. 



New Mexico: Pecos Baldy; Baldy; Jemez Mountains. Transition and Arctic- 

 Alpine zones. 



3. SEDUM L. Stonecrop. 



Fleshy, mostly glabrous herbs, erect or decumbent, with alternate entire leaves 

 and perfect flowers in terminal cymes; calyx 5-parted; petals 5, yellow, white, or 

 pinkish; stamens 10; carpels 5, distinct; fruit consisting of 5 follicles. 



KEY TO the .species. 



Petals yellow - 6. S. stcnopetahim 



Petals white or pink. 



Leaves terete or nearly so 1 . S- steUiforme. 



Leaves oblong, lanceolate, or spa tula te, flattened. 



Leaves lanceolate to ovate or oblong, broadest at or near 



the base 2. 5. cocJcerellii. 



Leaves spatulate to obovate, narrowed at the base. 



Plants glabrous 3. S. vrightii. 



Plants pubescent or puberulent-granular, at least 

 above. 



Leaves turgid, the basal ones smooth 4. S. wootoni. 



Leaves flattish, at least the basal ones papillose. . 5. S. griffithsii. 



1. Sedum steUiforme S. Wats. Proc. Amer. Acad. 20: 365. 1885. 

 Type locality: Huachuca Mountains, southern Arizona. 

 Range: New Mexico and Arizona to Chihuahua. 



New Mexico: Hillsboro Peak; San Francisco Mountains; MogoUon Mountains. 



2. Sedum cockereUii Britton, Bull. N. Y. Bot. Gard. 3: 41. 1903. 



Type locality: Tuerto Mountain, east of Santa Fe, New Mexico. Type collected 

 by Cockerell. 



Range: Known only from type localitj'. 



3. Sedum wrightii A. Gray, PI. Wright. 1: 76. 1852. 



Type locality: " Hills near the San Pedro River, in crevices of rocks, and summit 

 of mountains near El Paso," Texas. 



Range: Western Texas and southern New Mexico to northern Mexico. 

 New Mexico: Black Range; Eagle Creek, White Mountains. 



