334 



CRASSULACEAE 



many, spreading, 15 cm. long or less, obovate-spatulate, 5-9 cm. wide, acute; flowering stems 

 stout, 5-8 dm. high ; stem leaves ovate, acute or the lower acuminate, cordate-clasping ; flowers 

 in two or several elongated, ascending racemes ; pedicels very slender, 1-2 cm. long, spreading ; 

 flowers erect or ascending, 15 mm. long; calyx-lobes 5 mm. long, lanceolate, acute; petals red, 

 acute, united nearly to the middle ; carpels nearly or quite distinct, erect. 



Rocky cliffs and ridges, Upper Sonoran Zone; San Luis Obispo County, California, to northern Lower Cali- 

 fornia. May-July. 



2. Dudleya arizonica Rose. Arizona Dudleya. Fig. 2180. 



Dudleya arizonica Rose, Addisonia 8: 35. pi. 274. 1923. 



Echeveria lagunensis Munz, Bull. S. Calif. Acad. 31: 64. 1932. 



Dudleya lagunensis E. Walther, Leaflets West. Bot. 1: 29. 1932. 



Echeveria arizonica Kearney & Peebles, Journ. Wash. Acad. Sci. 29: 479. 1939. Not Hort. ex Berger. 1930. 



Caudex simple or few-branched, short. Basal leaves rhombic-obovate, abruptly short-acumi- 

 nate, 4-7 cm. long, flat and somewhat flaccid, pale green but not mealy; flowering stem stout, 

 erect or somewhat declining, 3-4 dm. long, usually simple, leafy; stem leaves broadly ovate, 

 acute, cordate-clasping at base, widely spreading; cyme usually with 2-3 branches; pedicels 

 slender, at least the lower longer than the flowers ; calyx-lobes lanceolate ; corolla 12-15 mm. 

 long, red, the lobes obtuse. 



Rocky desert slopes, Upper Sonoran Zone; desert slopes of the Cuyamaca and Laguna Mountains, southern 

 California, east to western Arizona. May-July. 



2180 



2177. Sedella pumila 



2178. Sedella Congdonii 



2181 



2179. Dudleya pulverulenta 



2180. Dudleya arizonica 



2181. Dudleya laxa 



2182. Dudleya Goldmanii 



