344 CRASSULACEAE 



6. Gormania debilis (S. Wats.) Britt. Great Basin Gormania. Fig. 2210. 



Sedum debilis S. Wats. Bot. King Expl. 102. 1871. 

 Gormania debilis Britt. Bull. N.Y. Bot. Gard. 3: 30. 1903. 



Rootstocks slender, horizontal, usually much branched, flowering stems slender, branched 

 from the base and diffuse, 5-10 cm. high. Lower leaves obovate-orbicular, sessile, 4-8 mm. long, 

 the upper oblong; cyme 2-5 cm. broad; pedicels slender, 3-5 mm. long; calyx-lobes ovate to 

 ovate-lanceolate ; corolla yellow, its lobes united at the very base, lanceolate, acuminate, 6-8 mm. 

 long. 



Rocky ridges, Boreal Zones; mountain ranges of the Great Basin region, including Idaho, Utah, Nevada, 

 and eastern Oregon. July-Sept. 



8. RHODIOLA L. Sp. PI. 1035. 1753. 



Perennial fleshy herbs with a woody simple or branched rootstock, and erect or as- 

 cending, simple or branched, leafy stems. Leaves cauline, flat and rather thin, sessile, 

 entire or toothed. Inflorescence a terminal often congested cyme. Flowers dioecious or 

 polygamous. Calyx and corolla 4-5-parted. Stamens 8-10. Carpels distinct, erect. [Greek, 

 meaning rose, in reference to the rose-scented roots.] 



A genus of about 8 species, natives of the north temperate zone. Type species, Rhodiola rosea L. 



1. Rhodiola integrifolia Raf. Entire-leaved Rosewort. Fig. 2211. 



Rhodiola integrifolia Raf. Atlant. Journ. 1: 146. 1832. 



Rhodiola rosea var. integrifolia Jepson, Man. Fl. PI. Calif. 450. 1925. 



Stems from a fleshy rootstock, usually not over 1 dm. high. Leaves obovate, 10-15 mm. 

 long, sessile, acute, entire or dentate above the middle ; cyme dense, small ; flowers dioecious, 

 5-merous or rarely 4-merous ; calyx-lobes lanceolate, 2 mm. long or less ; petals dark purple or 

 greenish purple, 3 mm. long, those of the pistillate flowers smaller; stamens about one-third 

 the length of the petals ; carpels 3-5 mm. long, oblong, tipped with a divergent or recurved beak. 



Moist rocky slopes, Boreal Zones; Alaska to the southern Sierra Nevada, California, east to Colorado. May- 

 July. 



9. SEDUM [Tourn.] L. Sp. PL 430. 1753. 



Succulent mostly glabrous herbs with alternate or sometimes opposite, often imbri- 

 cated leaves. Flowers perfect, in terminal cymes. Calyx 4-5-lobed. Petals 4-5, distinct. 

 Stamens 8-10, the alternate ones attached to the petals, the others to the calyx. Scales of 

 the receptacle entire or emarginate. Carpels 4-5, distinct or united at base, spreading; 

 styles short; ovules many. Follicles few- to many-seeded. [Name Latin, meaning to sit, 

 in reference to the lowly habit of these plants.] 



A genus of about 200 species, mainly in the temperate and boreal regions of the northern hemisphere, but 

 a few extending to the Andes of South America. Type species, Sedum Telephium L. 



Leaves linear or oblong, broadest at or near the base. 



Leaves linear and nearly terete; follicles ascending. 1. 5". stenopetalum. 



Leaves oblong or lanceolate, flattened; follicles divergent. 



Leaves oblong, acutish, not keeled on the back. 2. 5". radiatum. 



Leaves linear-lanceolate, acuminate, keeled on the back. 3. 5". Douglasii. 



Leaves spatulate to obovate, narrowed to the base. 

 Follicles erect or ascending. 



Flowers white; leaves not glaucous. 4. S. niveum. 



Flowers yellow; leaves more or less glaucous. 5. 5". spathulifolium. 



Follicles widely divergent. 



Leaves, at least of the sterile shoots, opposite; branches of the cyme short, mostly simple. 



6. .S". divergens. 

 Leaves alternate; branches of the cyme long and forked. 7. S. Leibergii. 



1. Sedum stenopetalum Pursh. Narrow-petaled Sedum or Stonecrop. Fig. 2212. 



Sedum stenopetalum Pursh, Fl. Amer. Sept. 324. 1814. 

 Sedum lanceolatum Torr. Ann. Lye. N.Y. 2: 205. 1827. 



Perennial with slender branching rootstocks, tufted, glabrous. Leaves alternate, crowded, 

 and on sterile shoots even imbricated, sessile, linear, 5-15 mm. long; flowering stems 7.5-20 cm. 

 high; flowers in a compact cyme; pedicels short; calyx-lobes narrowly lanceolate, acuminate, 

 4 mm. long; petals yellow, narrowly lanceolate, acuminate, 6-7 mm. long; follicles 4 mm. long, 

 their subulate tips divergent. 



On rocks, Boreal Zones; British Columbia to Saskatchewan, Nebraska, New Mexico, Nevada, and California. 

 In the Pacific States it is mainly east of the Cascade Mountains ranging from eastern Washington and Oregon 

 to the southern Sierra Nevada, California. West of the Cascades it occurs on the Olympic Mountains and in 

 San Juan County. June-Aug. 



Sedum acre L. Sp. PI. 432. 1753. Densely tufted perennial, the sterile branches prostrate forming mats, 

 the flowering branches erect or ascending, 4-8 cm. high. Leaves especially of the sterile shoots imbricated, alter- 

 nate, ovate, 4-5 mm. long; cyme usually 2-3-forked; flowers sessile; petals yellow, linear-lanceolate, 5-6 mm. 

 long; carpels widely spreading. A cultivated European species, which has escaped from gardens in some localities 

 in western Washington. 



