Sedum. CRASSULACEyE. 209 



% * Floivers solitary: petals oval or obhnrj : hyjwgynous scales linear : carpels 

 several-seeded. — Bulliarda. 



2. T. angustifolia, Nutt. Stems decumbent, rooting at base, diffusely branched, 

 an incli long : leaves linear, acute, connate, a line or two long : flowers sessile or on 

 very sliort pedicels : sepals 4, ovate, obtuse, a half shorter than the oblong petals 

 and broad obtuse 8- 12-seeded carpels. — Torr. & Gray, Fl. i. 558. 



Var. (]) Bolanderi, Watson. Stems 2 to 4 inches long, less diffusely branched : 

 flowers nearly sessile, the parts in threes or fours : seeds nearly a half larger. 



From Oregon to Colorado ; the variety on tlie muddy banfcs of streams near San Francisco, 

 Bolander. Tlie typical form may be expected in Northern California. It is very near tlie 

 T. Drtcmmondii, Torr. & Gray, of Texas, being distinguished apparently only by tlie sliortcr pedi- 

 cels. The var. Bolanderi has been collected only in fruit, and may prove distinct. 



2. SEDUM, Linn. Stone-crop. 

 Sepals 4 or 5, united at base. Petals as many, distinct. Stamens twice as many. 

 Carpels distinct or rarely connate at base, few - many-seeded, 1 -seeded in a single 

 species. — Herbs, mostly perennial and glabrous ; leaves fleshy ; flowers rarely 

 dioecious, in cymes, often secund. 



About 120 species, inhabiting with few exceptions the cooler and temperate regioiis of the 

 northern hemisphere, chiefly of the Old World. Fifteen species or more are fomid within the 

 limits of the United States. 



% Stout, jyereanial: floivers mostly dioecioiis, in a regidar compact compound cyme, 

 deep purple or becoming so : leaves serrate, flat. 



1. S. Rhodiola, DC. Stems simple, nearly erect, from a thick fragrant root, 

 1 to lU inches high, leafy: leaves alternate, oblong-oblanceolate, acute, rarely entire, 

 J to 1| inches long : cyme sessile, often an inch or two broad : flowers on short 

 naked pedicels, usually 4-merous : sepals short, oblong : petals IJ lines long, linear- 

 oblong : carpels becoming 3 lines long, shortly beaked. 



In the Sierra Nevada, at 9,000 to 12,000 feet altitude (Brewer, Bolander, Lcmmon), nortliward 

 to the Arctic Coast, and eastward across the continent. Also in the mountains of Europe. 



=.v % Floivers perfect, decandrous, secund upon the branches of a forked cyme, mostly 

 yelloiv or yelloivish : styles flliform : leaves entire, very fleshy: low and compjaratively 

 slender. 



-5- Leaves narrowed toward the base, obtuse : perennials. 



2. S. spathulifolium, Hook. Glaucous and sometimes mealy : stems ascend- 

 ing from a branched rooting caudex, 4 to 6 inches high, simple : leaves obovate or 

 spatulate, flat, 6 to 10 lines long: branches of the cyme approximate: flowers on 

 short pedicels or sessile, 3 lines long : petals yellow, lanceolate, acute, twice longer 

 than the ovate acute sepals and scarcely exceeding the stamens and styles. — Fl. i. 

 227 ; Torr. & Gray, Fl. i. 559. 



In dry rocky places from Monte Diablo to Vancouver Island. 



3. S. Oreganum, Nutt. Similar in habit, but not glaucous : flowers larger, 4 

 or 5 lines long : petals pale rose-color, narrowly lanceolate and acuminate, nearly 

 twice longer than the stamens : sepals acute or acuminate. — Torr. & Gray, Fl. i. 

 559. 



Mendocino Co. {Bolander), and northward to Washington Territory. Rarely collected. 



4. S. obtusatum, Gray. Of similar lial)it, but the branches of the cyme 

 usually more numerous and scattered : flowers distinctly pedicelled, 3 or 4 lines 

 long : petals oblong-lanceolate or ovate, acute, pale yellow, twice longer than the 

 broad obtusish sepals and little exceeding the stamens and styles. — Proc. Am. 

 Acad. vii. 342. 



