Part 1, 1905] CRASSUIyACBAE 69 



40. Sedum oxypetalum H. B. K. Nov. Gen. & Sp. 6 : 45. 1823. 



Bushy, about 1 m. high, much branched ; stem 5 cm. in diameter or more, the epi- 

 dermis somewhat roughened. Leaves flat, obovate-spatulate, 1-1.5 cm. long, rounded at 

 apex, narrowed at base into a short petiole extending backward at insertion ; inflorescence 

 leafy, cymose ; flowers sessile ; sepals narrowly lanceolate, acute, 3 mm. long ; petals 

 linear-lanceolate, acuminate, purplish red; carpels 5, widely spreading in fruit. ■ 



r 



Type ixdcality : Mexican garden. 



Distribution : Central Mexico among high volcanic rocks. 



A species of similar habit, but with narrow and acute lower leaves, occurs in central Mexico, 

 where it was collected by Mr. Rose ; it is doubtless undescribed, but the flowers are unknown. 



41. Sedum Botteri Hemsl. Diag. PL Nov. 1 : 10. 1878. 



Perennial ; flowering stems 3 dm. high or less, very leafy. I^eaves ovate- spatulate, 

 3-4 cm. long, 1-1.5 cm. wide, rounded at apex, cuneate at base, glabrous throughout; 

 flowers cymose-paniculate, short-pedicelled ; sepals linear, shorter than the yellow (?) 

 corolla ; scales described as broad. 



Type locality : Orizaba, Mexico. 

 Distribution : State of Vera Cruz, Mexico. 



42. Sedum Nelsoni Rose, Bull. N. Y. Bot. Gard. 3 : 43. 1903. 



M 



Caulescent, branching, especially above, 1-1.5 dm. high; branches brownish and 

 tuberculately roughened. Leaves (at least in herbarium specimens) thin and distinctly 

 nerved, spatulate, 2.5-3.5 cm. long, 6-7 mm. broad at widest point, narrowed at base into 

 ' a rather distinct petiole and extending below the point of attachment into a broad spin- ; 

 inflorescence a few-flowered cyme ; pedicels 4-5 mm. long ; sepals distinct, unequal, the 

 longer ones 8 mm. long; petals free (?) to the base, lanceolate, acute, yellowish but with 

 a broad reddish stripe on the back ; stamens opposite the petals borne high upon them, the 

 others attached at or near their bases ; carpels widely spreading from the very base. 



Type locality : Between Ayusinapa and Petatlan, Guerrero, Mexico, 

 Distribution : Known only from the type locality. 



43. Sedum Palmeri S. Wats. Proc. Am. Acad. 17 : 355. 1882. 



Perennial, caulescent, erect and branching, glabrous. Ivcaves thick, flattened, spatu- 

 late to obovate, 2.5-3.7 cm. long; inflorescence paniculate ;' pedicels short; petals 4-6 mm. 

 long, deep-orange, narrowly lanceolate ; carpels short, about as long as the slender styles. 



Type locality : Guajuco, Nuevo Leon, Mexico. 

 Distribution : Nuevo I,eon and Coahuila. 



44. Sedum Purpusi Rose, sp. nov. 



Stems several dm. high, weak and much branched, glabrous. Leaves alternate, flat, 

 green, 2-3 cm. long, oblanceolate, retuse at apex ; inflorescence compact, paniculate, each 

 branch arising from the axil of a leaf and ending in a 2-5-branched cyme ; ultimate branches 

 bearing 2-7 sessile flowers ; calyx-teeth obtuse, unequal, the shorter ones as long as the 

 tube, green, erect; petals weakly spreading, 5 mm. long, somewhat trough-shaped, obtuse, 

 but with the faintest indications of a tooth just back of the apex, bright-yellow ; stamens 

 10, the 5 opposite the sepals distinct to the base, the 5 opposite the petals borne on them a 

 short distance above the base ; scale thin and ribbon-like, truncate or nearly so ; carpels 

 distinct, lanceolate in outline, tapering into slender styles, at first erect but in age spreading. 



On rock between Esperanzaand Orizaba City, Vera Cruz, Mexico. Collected by C. A. Purpus 

 1904 (Rose no. 942, Purpus no. 7). 



45. Sedum dendroideum Mog. & Sesse; DC. Mem. Crass. 37. pi. 9. 



1828. 



A shrub 1-3 dm. high, much branched, smooth. Leaves flat, fleshy, obovate or spatu- 

 late, rounded at apex, sessile, 2-A- cm. long, 1 cm. broad at top ; inflorescence cymose- 

 paniculate, 0.5-1.5 dm. long, 1 dm. broad or less ; flowers sessile or nearly so; calyx 5- 



