270 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



grandiflonim, hispanicum, Hildehrandtii, ibericum, Jacquini, lividttm, 

 montanum, portulacoides, pruinaium, stoloniferum, Vcrloii. 



I have cultivated about a hundred plants of this species, from 

 gardens in most parts of Europe, including many selected forms from 

 British gardens. This large series showed a considerable and con- 

 tinuous range of variation as regards size (from very robust forms down 

 to others indistinguishable without flower from S. anopetalum) and 

 colour (from glaucous to quite green). The species varies also as 

 regards the character from which it takes its name — the reflexed 

 leaves on the flowering stems, these being often straight. The colour 

 of the flowers in the cultivated forms appears to be always normal — 

 a fine yellow. 



Var. albescens Haworth, " Revis. Succ." 28, which figures in British 

 floras, is described as having the leaves glaucous, those of the flowering 

 shoots not reflexed, plant smaller and leaves more slender, and flowers 

 pale yellow. In the last character alone does it seem to differ from 

 all of my garden forms, many of which showed some of these characters, 

 and several all of them except the last. 



Many other varieties are described. Baker, in his account of 

 the Sedums of the rupesire group [Gard. Chron. 1877, ii. 461), includes 

 vars. coUinum, virens, albescens, minus, recurvatum, sepiangulare, 

 virescens, and cristatum, and RouY and Camus (" Flore de France," 

 7, 109) give adpressum, coUinum, recurvatum, graniticum, reflexum 

 Briq., arrigens, Smiihianum, albescens, and caesium j but a series 

 such as that in my garden disillusions one as to the value of these, 

 except so far as, in the native state, they may represent local races, 

 and be of interest geographically. For garden purposes the only 

 one requiring mention is 



Monstr. cristatum of gardens (fig. 158), 



a fasciate form long in cultivation, and one of the most curious 

 of Sedums, the flattened stems often being 2 inches broad. In 

 this condition it never flowers, but normal shoots are frequently 

 produced, and these flower freely if allowed to develop. 



132. Sedum altissimum Poiret (figs. 159, 164, d). 

 S. altissimum Poiret, "Encycl.," 4, 634, 1796. 



Synonyms. — S. ochroleucum Villar (not of Chaix, which = anopetalum). 

 Baker in Gard. Chron. 1877, ii. 307. 5. acutifolium of gardens (not of Ledebour, 

 which is a white-flowered Caucasian species allied to album, and not in cultiva- 

 tion). S. rufescens Tenore. 



Illustrations. — Jacquin, "Hort. Vindob.," 1, tab. 81 (as Sempervivum sedi- 

 forme). De CandoUe, " Plantes Grasses," tab. 40. Tenore, " Flor. Napol.," 

 tab. 41. Reichenbach, " Icon. Crit.," 8, 285. Cusin and Ansberque, " Herb. 

 Flor. Franfaise, Crassul.," tab. 32. 



S. altissimum most resembles, on the whole, 5. reflexum, from which 

 it may be distinguished by its leaves distinctly flattened (not terete) 

 and lanceolate (not linear) in outline, by its taller flowering shoots 



