184 CRASSULACE^. 



preceding, but widely different in all other particulars. Frequent on 

 muddy shores about San Francisco. May. 



2. SEDUM, Columna (Stone-crop). Grlabrous perennials or annuals. 

 Flowers in cymes, mostly secund. Sepals 4 or 5, united at base. Petals 

 as many, distinct. Stamens twice as many. Carpels distinct, or rarely 

 connate at base, few- or many-seeded. 



* Perennial with flat serrate leaves, and Jloivers in a compact 

 compound cyme. 



1. S. roseum, Scop. Fl. Oarn. i. 326 (1772) ; Linn. Sp. PL ii. 1035 

 (1753), under Rh.odiola. Rhodia qfficinarum, Orantz, Inst. i. 191 (1766). 

 Sedum Rhodiola, DC. Fl. Fr. iv. 386 (1805). Stems simple, erect, 2—10 

 in. high, from a thick rose-scented root : leaves alternate, oblong-lanceo- 

 late, acute, rarely entire, 1-3— 1^2 in. long : cyme sessile, 1—2 in. broad : 

 tl. on short naked pedicels, usually 4-merous, dioecious, dark -purple in 

 age : sepals oblong : petals linear-oblong, lli lines long : carpels 

 becoming 3 lines long, short-beaked. — In wet soil in the higher Sierra ; 

 also in subarctic America and in Europe. 



* * Perennials with entire leaves, and floaters secund upon the branches of 



a forked cyme. 



2. S. spathulifolium, Hook. Fl. i. 227 (1833). Glaucous and often 

 pulveriilent : stems 4—6 in. high, ascending from a branched and rooting 

 caudex : leaves fiat, obovate or spatulate, obtuse, 6-10 lines long : fl. 3 

 lines long : petals yellow, lanceolate, acute, twice longer than the ovate 

 acute sepals.— Rocky places on the northward slopes of hills and moun- 

 tains from San Francisco and Berkeley northward. 



3. S. Oreg-auum, Nutt, T. & G. Fl. i. 559 (1840). Resembling the 

 last, but not glaucous : fl. larger (4—5 lines long) ; petals pale rose- 

 color, narrowly lanceolate, acuminate ; sepals acute.— From Mendocino 

 Co. northward. 



4. S. obtusatuiii, Gray, Proc. Am. Acad. vii. 342 (1868). Habit of the 

 above, scarcely glaucous : leaves spatulate or cuneate, the uppermost 

 oblong : fl. loosely cymose, pedicellate : petals yellowish, oblong-lanceo- 

 late or ovate, twice longer than the broad obtusish sepals. — In the Sierra 

 Nevada from the Yosemite northward. 



5. S. rartiatuin, Wats. Proc. Am. Acad, xviii. 193 (1883) : S. Douglasii, 

 Wats. Bot. Calif, not Hook. Stems 3—6 in. high, decumbent at base 

 from a branching rooting caudex : leaves oblong or oblong-ovate, obtuse 

 or acutish, somewhat clasping by the narrower base, }4 — H iii- loiig '■ A- 

 sessile ; sepals short, triangular ; petals yellow, narrowly lanceolate, 

 acuminate, 3 lines long : carpels broad, the beaks abruptly divergent.— 

 Coast Range, from Monterey Co. to Mendocino and Trinity. 



«■ * * Annual, with flowers cymose. 



