ACCOUNT OF GENUS SEDUM AS FOUND IN CULTIVATION. 153 



62. Sedum allantoidesRose (fig. 81). 



S. allantoides Rose in Contrib. U.S. Nat. Herb., 12, 440, 1909. 



Illustrations. — Loc. cit., pi. 79 (photo). MoUer's Deutsche Gdrtner-Zeitung, 

 191 1, fig. 14 (photo). 



A characteristic Mexican type, coming near, in foliage and habit, 

 to S. pachyphyllum, which it resembles in its large, blunt, terete, club- 

 shaped leaves. Those of allantoides are wholly blue-glaucous, while 

 the leaves of pachyphyllum are greener and tipped with red. The 

 shoots of pachyphyllum, moreover, are dense and rounded at the tip, 

 owing to the presence of many young leaves, while in allantoides 

 young leaves are usually few and small. In flower, as will be seen 

 by the illustrations (figs. 81, 123), the two species are very different. 



Description. — An evergreen, smooth, glaucous perennial. Stem branching 

 below, woody, bare and declining at base, branches leafy, erect, i foot high. 

 Leaves alternate, very glaucous, terete, sessile, very blunt, curved upwards, 

 thickest near the tip, inserted at right angles to the stem. Inflorescence lax, 

 paniculate, with cjrmose branches, 4-5 inches long by 3 inches across. Buds 

 acute, strongly ribbed. Flowers \ inch diameter, shorter than the pedicels. 

 Sepals wide-spreading, fleshy, green-glaucous, lanceolate, acute, J inch long, 

 tube very short. Petals wide-spreading, greenish white, lanceolate, acute, keeled 

 on back, grooved on face, i J times the sepals. Stamens spreading, shorter than 

 the petals, filaments white, anthers pinkish. Scales yellowish, nearly entire, 

 cuneate, as broad as long. Carpels white, erect. 



Flowers June- July (gentle heat). Not hsirdy. 



Habitat. — Hills in Oaxaca, Mexico, at over 2,000 metres. 



Received from Washington ; the Kew and Edinburgh Botanic 

 Gardens had it from the same source several years earlier, and, 

 according to Moller's Zeitung {supra) it is in cultivation at Darmstadt. 



The sepals are variable, being in some plants broader, shorter, 

 and more fleshy than in others (see fig. 81). 



The name is derived from the Greek allantos, a sausage, from the 

 shape of the leaves. 



63. Sedum Bourgaei Hemsley (fig. 82). 



S. Bourgaei Hemsley, "Diagnoses Plant. Nov.," 1, 11, 1878. " N. 

 Amer. Flora," 22, 64, 1905. 

 Illustration. — Hemsley, " Biol. Centr. Amer., Bot.," pi. 20. 



A graceful, comparatively tall (i foot or so), slender plant, allied 

 to S. guadalajaranum S. Wats, and S. griseum Praeger. Distinguished 

 from both by its stronger growth, leaves green and flattened (not 

 glaucous and sub-terete), bright-red branches and conspicuous long 

 dark-purple scales (not short and yellowish or reddish) ; from the 

 former also by its fibrous (not thickened tuberous) roots, and from 

 the latter by its lax inflorescence. 



Description. — A sub-shrubby evergreen perennial. Stem slender, smooth, 

 red, erect or ascending, frequently braached, 6-12 inches high, woody and 

 bare below, with many flowering and some barren shoots. Leaves alternate, 

 green, sessile, linear, blunt, fleshy, flattened, f-f inch long by ^g broad by 



