Part 1, 1905] CRASSULACEJAB 71 



51. Sedum Lumholtzii Rob. & Fern. Proc. Am. Acad. 30 : 116. 1894. 



Probably perennial ; stems herbaceous, puberulent, 1-2.5 dm. high. Basal leaves numer- 

 ous, spatulate, 8-12 mm. long, obtuse, pubescent, flattened; inflorescence a flat-topped 

 cyme; pedicels 2-6 mm. long; sepals united near the base, oblong, obtuse, 3 mm. long; 

 petals white, 5 mm. long, acute; scales small; carpels somewhat spreading (?). 



Type locality : Nacoi, Sonora, Mexico. 



Distribution : Only known from two stations in Sonora. 



52. Sedum Wootoni Britton, Bull. N. Y. Bot. Gard. 3 : 44. 1903. 



Rootstocks rather stout; stems tufted, slender, erect or ascending, 1-1.5 dm. high, 

 granular-puberulent above, glabrous below. Leaves sessile, 8-14 mm. long, 2.5-5 mm. wide, 

 the basal and lower ones obovate to spatulate, obtuse, the upper narrowly spatulate to 

 linear-oblong, acute to acuminate; cyme 2.5-5 cm. broad, its branches densely granular- 

 puberulent ; pedicels 2 mm. long or less ; sepals narrowly oblong, obtusish ; petals white, 

 oblanceolate, acute, longer than the sepals, 6-8 mm. long ; carpels erect, subulate- tipped. 



Type locality : Organ Mountains, New Mexico, 2,000 m. altitude. 

 Distribution : Mountains of New Mexico and Arizona. 



53. Sedum puberulum S. Wats. Proc. Am. Acad. 23 : 273. 1888. 



Perennial, with ntmierous simple stems arising from the crown, 4-6 cm. high, rough- 

 puberulent. Leaves sessile, flat, oblanceolate to spatulate, 7-10 mm. long, acutish ; sepals 

 narrowly oblong, 4-6 mm. long, puberulent ; petals 6 mm. long, acute, white, a little 

 longer than the sepals. 



Type locality : Shaded cliffs in the Sierre Madre, Chihuahua, Mexico. 

 Distribution : Known only from the type locality. 



54. Sedum Griflathsii Rose, sp. nov. 



Perennial, growing in clumps from somewhat thickened roots. Flowering stem about 

 10 cm. long; basal leaves decidedly flattened, rough on both sides, oblanceolate, 6-8 mm. 

 long, obtuse ; stem-leaves scattered, somewhat narrower than the basal leaves ; inflorescence 

 a rather compact cyme; flowers sessile or nearly so; sepals narrow, leaf-like, 5 mm. long; 

 corolla 12 mm. broad, white, its lobes broadly ovate, widely spreading; glands purplish; 

 carpels erect, at least at first ; styles slender. 



Common on the mountains of southern Arizona. 



Santa Rita Mountains, D. Griffiths, October, 1903 {no. 6061, type) ; near Ft. Huachuca, T. E- 

 Wilcox, September, 1894 {no. 459)\ Mt. Graham, J. T. Rothrock, 1874 {no. 756); Bowie, M. E. 

 Jones, September 20, 1884. 



55. Sedum californicum Britton, Bull. N. Y. Bot. Gard. 3: 44. 1903. 



Rootstock rather stout, nearly horizontal. Stems erect, stout, 1,5-2 dm. high; basal 

 leaves and those of rosettes spatulate, obtuse, 1-3 cm. long, 8-10 mm. wide, the flabellately 

 arranged veins uniting in an intramarginal nerve; stem-leaves linear-oblong to oblong- 

 spatulate, acute to acutish, about 1 cm. long; cyme large, 6-10 cm. broad, its branches 

 stout, ascending or somewhat recurved, mostly once or twice forked ; flowers sessile or the 

 lower ones on stout pedicels 3 mm. long or less ; sepals ovate, acutish or obtuse, about 2 

 mm. long, one-fourth to one-third as long as the narrowly lanceolate, white, long-acuminate 

 petals ; carpels broad, divergent, finely reticulated, the subulate tips ascending. 



Type locality : North side of Mount Shasta, Siskiyou County, CaUfornia, 1,600-3,000 m. 



altitude. 



Distribution : Northern California. 



56. Sedum madrense S. Wats. Proc. Am. Acad. 23 : 273. 1888. 



Perennial, with a somewhat creeping rootstock, much branched, 1 dm. high, glabrous 

 throughout, very leafy. Leaves narrow, obtuse, 6-8 mm. long; inflorescence cymose ; 

 sepals 4 mm. long, obtuse; petals purple, 6-7 mm. long; carpels strongyl spreading. 



Type locality : Sierra Madre, Chihuahua, Mexico. 

 Distribution : Only known from the type locality. 



