210 ■ CRASSULACE^. Sedum. 



On granite rocks in the Sierra Nevada : Yosemite Valley {Bolander, Torrey, Gray, &c.) ; Mt. 

 Hoffmann, at 10,000 feet altitude, and Sonera Pass, Breiver. These closely allied species need to 

 be defined from li\nng specimens. 



S. DEBiLE, Watson, Bot. King Exp. 102. Stems weak, 2 to 4 inches high, from very slender 

 running rootstocks : leaves rounded or obovate, 1 to 3 lines long : flowers on rather long pedicels, 

 in small cymes, 3 lines long, yellow : petals lanceolate, acuminate, twice longer than the acute 

 sepals and little exceeding the stamens and styles. — In the mountains of Northern Nevada and 

 Utah ( JVatson, Haydcn), and probably of Northeastern California ; iirst collected by Tolmie. 



+- -i- Leaves broadest at base, acute. 



5. S. Stenopetalum, Pursh. Stems erect or ascending from a branched per- 

 ennial rootstock, 3 to 6 inches high, simple or sometimes branched : leaves narroAvly 

 lanceolate, sessile, 2 to 4 lines long or more : flowers bright yellow, nearly sessile, 3 

 to 5 lines long : petals lanceolate, acuminate, twice longer than the acuminate se- 

 pals, and equalling or exceeding the stamens and elongated styles. — Torr. & Gray, 

 n. i. 560 ; Watson, Bot. King'^Exp. 101. 



Frequent from Oregon and Nevada to the Rocky Mountains, and doubtless to be found in North- 

 eastern California. 



6. S. variegatum, Watson. Probably perennial witli a subterranean rootstock, 

 dwarf, the slender simple stems only 2 inches high : leaves purplish, ovate-oblong, 

 2 lines long or less : flowers 3 to 6, in a contracted cyme, nearly sessile : petals 

 broadly lanceolate, acute, 2 lines long, yellow veined with purple, twice longer than 

 the purple ovate acute sepals and a little exceeding the stamens and styles. — Proc. 

 Am. Acad. xi. 137. 



Near San Diego, D. Cleveland, 1875. 



7. S. Douglasii, Hook. Branching at base, from a stout proliferous rootstock, 

 the ratlier stout stems 3 or 4 inches high : leaves lanceolate or the lowermost linear- 

 subulate, acute, membranaceous Avhen dry, 3 to 6 lines long : flowers sometimes 

 polygamous, yellow, sessile, in an open cyme : petals 2 or 3 lines long, lanceolate, 

 aciiminate, twice longer than the acuminate sepals and exceeding the stamens : folli- 

 cles at length divaricately spreading from their united bases. — Fl. i. 228 ; Torr. & 

 Gray, Fl. i. 559. 



Mendocino Co. (Bolander) ; among limestone rocks on Gavilan Peak (Brewer) ; and northward 

 to Oregon. Picmarkable for its divergent follicles. It is described as an annual, but may per- 

 haps be more persistent. 



8. S. pumilum, Bentli. Annual, slender, branching or simple, 1 to 3 inches 

 high : leaves ovate-oblong, a line or two long : flowers sessile in sparingly branched 

 cymes, yellow : calyx-lobes very small, triangular, acute : petals linear, acute, 1 J lines 

 long, exceeding the stamens and styles : follicles short, 1-seeded ; the seed erect, 

 filling the cavity. —PI. Hartw. 310. 



On gravelly soil in the Sacramento Valley (Earhccg) ; at Placerville (BaUan) ; Table Moun- 

 tain (J//X Auics) ; Oregon, Nuttall. It was also collected by Fremont. Peculiar in its minute 

 calyx and solitary seeds. 



3. COTYLEDON, Linn. 



Calyx 5 -parted. Petals united into a 5-lobed pitcher-shaped or cylindrical corolla. 



Stamens 10, inserted on the corolla-tube. Carpels distinct, or rarely united at base, 



many-seeded, beaked by the subulate styles. — Herbs, or soft- woody at base, ours 



stoiit perennials ; leaves very thick and fleshy, entire, the lower rosulate ; flowers 



often large and showy, mostly scarlet and yellow, in our species scorpioid-cymose 



or in long racemes. — Benth. & Hook. Gen. PI. i. 659 ; Baker, Eefug. Bot. i. 



(February, 1869). Echeveria, DC. Prodr. iii. 401. 



About 60 species, belonging to the dry or hot regions of the Old World and North America. 

 The Mexican species number 25 or 30, and there is also another in New Mexico near the boundary, 



