112 CRASSULACEAE 



Cyme mostly branched and rebranched, thus rounded or thyrsoid; mostly central 



Cai 4. E. laxa. 



Cyme mostly divided into a few racemose branches, these often elongated and 



simple, sometimes rebranched, sometimes short; mostly Southern Cal 



5. E. lanceolata. 

 Carpels widely spreading, slightly united at base; corolla somewhat rotately spreading. 



Leaves lanceolate, distinctly flattened ; inflorescence cymose or thyrsoid 6. E. viscida. 



Leaves linear, terete or subterete, flattened strongly only near the base. 



Inflorescence mostly open, commonly a thyrsoid cyme 7. E. edulis. 



Inflorescence a round-topped cyme, densely flowered 8. E. densiflora. 



1. E, pulverulenta Nutt. Chalk Lettuce. Plants 2^^ to 4 feet high, cov- 

 ered witli a dense white-mealy powder; flowering stems very stout, densely leafy; 

 rosettes rather loose and flattish, their leaves broadly spatulate or oblong, rounded 

 at apex but abruptly short-acute, spreading, 3 to 7 inches long, 2 to 2V2 inches 

 wide; stem leaves ovate or suborbicular, sessile or clasping, % to IV2 inches wide; 

 branches of the cyme 2 or 3, mostly simple, widely spreading, i/^ to 1^/^ feet long; 

 petals red, narrow, 6 to 8 lines long; pedicels 1 to 3 lines long. 



Dry rocky slopes, 20 to 2000 feet : coastal Southern California from Los Angeles 

 Co. to San Diego Co. South to Lower California. May-June. 



Habit note. — Due to their large size and chalky-white color, the plants of this species are a 

 striking feature of sea-bluffs and of the rocky hillsides of caiions in the coastal belt of Southern 

 California. It is sometimes said by collectors that exceptionally large rosettes "nearly fill the 

 mouth of a bushel basket." 



Locs. — Santa Monica Mts., ace. J. Ewan; Claymine Caiion, Santa Ana Mts., J. T. Howell 

 2840; Augustine Eanch, Palomar Mt., Jepson 1550; Del Mar, Jepson 1620; San Diego, Mary 

 Spencer 164. 



Eefs. — ECHEVERiA PULVERtTLENTA Nutt. ; T. 6c G. Fl. 1:560 (1840), type loc. San Diego, 

 Nuttall. Cotyledon pulverulenta Baker; Saunders, Eef. Bot. 1: t. 66 (1869) ; B. & W. Bot. Cal. 

 1:211 (1876) ; Jepson, Man. 452 (1925). Dudleya pulverulenta Britt. & Rose, Bull. N. Y. Bot. 

 Card. 3:13 (1903). Echevcria argentea Lem. III. Hort. 10: misc. 78 (1863). 



2. E. cotyledon Nels. & ]\Icbr. Bluff Lettuce. Plants glabrous, glaucous, 

 5 to 12 inches (or to 2^/^ feet) high; rosettes dense, subglobose; leaves linear or 

 oblong, rather thick for their width, 1 to 2 inches long, % to % as wide, usually 

 widest at the base; flowering stems stout, their leaves many, broad, somewhat clasp- 

 ing, 5 to 6 lines wide; c^one usually very compact; flowers on very short stout ped- 

 icels (mostly 1/2 to 1 line long); corolla cylindric, not angled or only slightly, 

 cream-white. 



Bluffs along the ocean : Monterey Co. to Del Norte Co. June- Aug. 



Habit note. — After initial branching the eaudex or root-crown continues to grow several to 

 many years by the terminal bud only. The crowded leaves persist several years and in conse- 

 quence there result in time leafy but very compact cylindric bodies 3 to 5 inches or more long, 

 which are (in the extreme form) rather markedly different from those of the allied species, 



C. caespitosa and C. laxa. 



Locs. — Malpaso Creek, Monterey coast, Jepson 2613; Pt. Joe, Jepson 9741; Pacific Grove, 

 Jepson 13,430; Bakers Beach, San Francisco, B. A. Walker 1794; Tiburon, Jepson 12,922; Point 

 Eeyes, Elmer 5011; Ft. Bragg, Jepson 13,429; Cape Mendocino, Jepson 2144; Eagged Hill, s. of 

 Crescent City, Jepson 9407. 



Eefs. — EcHEVERiA COTYLEDON Nels. «& Mcbr. Bot. Gaz. 56:477 (1913). Sedum cotyledon 

 Jacq. Eclog. 1:27, pi. 17 (1811), type loc. Monterey. Dudleya cotyledon Britt. & Eose, Bull. 

 N. Y. Bot. Card. 3:28 (1903). Echeveria farinosa Lindl. Jour. Hort. Soc. Lond. 4:292 (1849), 

 type loc. rocks near Carmel Bay, Eartweg. Cotyledon farinosa Baker; Saunders, Eef. Bot. l:t. 

 71 (1869); Jepson, Fl. W. Mid. Cal. 266 (1901), ed. 2, 196 (1911), Man. 452, fig. 443 (1925). 

 Dudleya farinosa Britt. & Eose, Bull. N. Y. Bot. Gard. 3:15 (1903). Cotyledon calif ornica 

 Baker, I.e. l:t. 70 (1869), type from Cal. Echeveria calif ornica Baker, I.e. ('i)Dudleya com- 

 pacta Eose, Bull. N. Y. Bot. Gard. 3:25 (1903), type from "San Francisco Bay", Eastwood. 



D. eastwoodiae Eose, I.e. 25, type loc. Bodega Point, Sonoma Co., Eastwood. D. septentrionalis 

 Eose, I.e. 26, type loc. Crescent City, Eastwood. 



3. E. caespitosa DC. Coast Lettuce. Plants green or somewhat glaucous, 

 % to 1% feet high; rosettes usually rather loose; leaves 2 to 3 (even 6) inches 



