STONECROP FAMILY 335 



3. Dudleya laxa (Lindl.) Britt. & Rose. Lax or Spreading Dudleya. Fig. 2181. 



Echeveria laxa Lindl. Jour. Hort. Soc. 4: 292. 1849. 

 Echeveria cymosa Lemaire, Rev. Hort. 1858: 439. 18S8. 

 Cotyledon cymosa Baker in Saund. Ref. Bot. 1: pi. 68. 1869. 

 Cotyledon laxa Benth. & Hook, ex S. Wats. Bot. Calif. 1: 212. 1876. 

 Cotyledon Plattiana Jepson, Fl. W. Mid. Calif. 267. 1901. 

 Dudleya laxa Britt. & Rose, Bull. N.Y. Bot. Gard. 3: 19. 1903. 

 Dudleya cymosa Britt. & Rose, Bull. N.Y. Bot. Gard. 3: 21. 1903. 



Caudex short with 1-3 rosettes. Basal leaves spreading, ovate to lanceolate, 4-7 cm. long, 

 broadest at or near the base, fleshy, slightly rounded on the lower surface and concave on the 

 upper, glaucous when young, the older becoming glabrous and rather bright green; flowering 

 stem rather weak, 3-6 dm. long, purplish; stem leaves few, triangular-lanceolate, somewhat 

 cordate ; cyme loose, its branches slender, spreading, simple or forked ; flowers secund ; pedicels 

 slender, 5—10 mm. long; calyx-lobes ovate-lanceolate, acute, 3-4 mm. long; corolla yellow, 

 10-15 mm. long, its lobes oblong-lanceolate, acute or acuminate. 



Rocky or sandy soil, Upper Sonoran and Transition Zones; California North Coast Ranges to southern Cali- 

 fornia. May-July. 



4. Dudleya Goldmanii Rose. Goldman's Dudleya. Fig. 2182. 



Dudleya Goldmanii Rose, Bull. N.Y. Bot. Gard. 3: 19. 1903. 



Dudleya ovatifolia Britt. Bull. N.Y. Bot. Gard. 3: 20. 1903. 



Echeveria Goldmanii Berger in Engler & Prantl, Nat. Pflanzenf. ed. 2. 18 a : 478. 1930. 



Caudex very short, with one to few rosettes. Basal leaves rhombic-ovate, 2-4 cm. long, 

 abruptly short-acuminate, flat, glaucous ; flowering stems slender, 1-2 dm. high ; stem leaves 

 ovate, cordate, spreading; cyme flat-topped; pedicels slender, 10-15 mm. long; calyx-lobes ovate, 

 acutish ; corolla 10-12 mm. long, yellow, usually tinged with rose, the lobes lanceolate, acute. 



Rocky slopes, Upper Sonoran and Transition Zones; Coast Ranges from Monterey County to Los Angeles 

 County, California. June-Aug. 



5. Dudleya nevadensis (S. Wats.) Britt. & Rose. Sierra Dudleya. Fig. 2183. 



Cotyledon nevadensis S. Wats. Bot. Calif. 1: 212. 1876. 



Dudleya nevadensis Britt. & Rose, Bull. N.Y. Bot. Gard. 3: 20. 1903. 



Echeveria nevadensis Nels. & Macbr. Bot. Gaz. 56: 477. 1913. 



Caudex very short, with 1-3 rosettes. Basal leaves obovate to oblanceolate, 6-10 cm. long, 

 3-5 mm. wide, green or the younger leaves somewhat glaucous ; flowering stems slender, 1-3 dm. 

 high, usually pale ; stem leaves lanceolate to oblanceolate, slightly clasping or sessile ; inflores- 

 cence a rather dense compound cyme ; pedicel 6-12 mm. long ; calyx-lobes triangular-lanceolate, 

 acute, 3-4 mm. long, glaucous ; corolla yellow tinged with red, cleft to below the middle, the 

 lobes narrowly oblong-lanceolate, acuminate. 



Upper Sonoran and Transition Zones; Sierra Nevada, from Butte County to Kern County, California. May- 

 Aug. 



Dudleya nevadensis subsp. minor (Rose) Abrams. (D. minor Rose, Bull. N.Y. Bot. Gard. 3: 19. 1903.) 

 Caudex very short, with one to few rosettes. Basal leaves spreading, glaucous, flat, rhombic-ovate, abruptly 

 acuminate, the larger 5-7 cm. long; cyme with a few elongated ascending secund racemes; pedicels slender, 

 10-15 mm. long; calyx-lobes ovate to ovate-lanceolate; corolla 12 mm. long, pale yellow tinged with rose in age, 

 the lobes lanceolate, acute. Rocky slopes and cliffs, Upper Sonoran and Transition Zones; San Gabriel Mountains, 

 southern California. Some forms of this subspecies have the stem leaves somewhat spreading and cordate, thus 

 approaching D. Goldmanii. 



6. Dudleya gigantea Rose. Amador Dudleya. Fig. 2184. 



Dudleya gigantea Rose, Bull. N.Y. Bot. Gard. 3: 23. 1903. 



Cotyledon gigantea Fedde in Just, Bot. Jahresb. 31 1 : 826. 1904. 



Echeveria amadorana Berger in Engler & Prantl, Nat. Pflanzenf. ed. 2. 18 a : 479. 1930. 



Rootstock short and thick. Basal leaves in a dense rosette, very glaucous, oblanceolate, 5-7 

 cm. long ; flowering stems stout, about 3 dm. high ; inflorescence paniculate with usually numer- 

 ous erect branches; pedicels 5-10 mm. long; calyx-lobes broadly ovate, obtuse or acutish; 

 corolla 9-10 mm. long, red at least in age, the lobes united at base into a short tube, acute at apex. 



Rocky banks, Upper Sonoran Zone; western slopes of the central Sierra Nevada, California. June-July. 



7. Dudleya Setchellii (Jepson) Britt. & Rose. Setchell's Dudleya. Fig. 2185. 



Cotyledon laxa var. Setchellii Jepson, Fl. W. Mid. Calif. 267. 1901. 

 Dudleya Setchellii Britt. & Rose, Bull. N.Y. Bot. Gard. 3: 15. 1903. 

 Echeveria Setchellii Nels. & Macbr. Bot. Gaz. 56: 477. 1913. 



Caudex short and thick at length bearing several rosettes. Basal leaves narrowly lanceolate 

 or linear, long-acuminate, thick and concave on the upper surface, pale green and glaucous ; 

 flowering stems several, 1-3 dm. high, rather slender, their leaves linear-lanceolate, acuminate; 

 inflorescence a narrow panicle; pedicels rather stout, 4-5 mm. long; calyx-lobes lanceolate, 

 acute; corolla-lobes pale yellow, narrowly oblong-lanceolate, acute; stamens much shorter than 

 the corolla. 



Rocky ledges and banks, Upper Sonoran Zone; Inner Coast Ranges, from Alameda County to San Benito 

 County, California. May-June. 



