SEDUM PRUINATUM BROT. 141 



vagus. Schur at first rightly distinguished B. Steveni, but afterwards 

 named it R. stngulosus. His Pi. malacophylhis is the R. Constanti- 

 nopoUtanus alluded to above. True R. Steve^ii, which grows abun- 

 dantly in the Gardens at Vienna, he named R. malacophyllus. 

 Again, he named a broad-leaved form of R. Steve^ii, R. Csatoi. 



The geographic distribution of Pi. Steveni is remarkable. It is 

 common in France, and from thence, southwards, ascends into the 

 high mountain chain of Aragon. I have myself found it in Switzer- 

 land. It is rare in Germany and Mid-Europe, where Kerner says 

 it is sporadic, being found only in the neighbourhood of dwellings ; 

 he therefore concludes it is not native either here or in Sweden. 

 It appears again in East Hungary, East Galizia, Siebenbiirgen, 

 Koumania, and Volhynia, and is common in these countries. It 

 does not appear to be known in Italy. Very remarkable, he says, 

 is the appearance of two nearly-allied species associated with R. 

 Steveni, viz., R. Granatensis Boiss. in Spain, and Pi. Serbicus Vis. in 

 the Balkan Peninsula. 



R. ACRis Linn. Spec. Plant, ed. 1, p. 554 (1753). — This is 

 distinguished by its stout, compact, erect, and prsemorse rhizoma, 

 the offshoots of which, arising from the axils of the root-leaves, are 

 sessile, or connected by a short perpendicular sobole. This is a 

 widely distributed Mid-European form. It extends into the Arctic 

 regions. Jordan named it R. BorcBcinus, in consequence of his 

 having referred Linnaeus's acris to R. Steveni. Kerner believes that 

 little value can be placed on characters drawn from the form of the 

 divisions of the leaves, or from the presence or absence of hairs on 

 the stem or petioles. In spring, he says, these may be glabrous, 

 and the divisions of the leaves narrow, while in the autumn the 

 stem and petioles may be hairy, and the divisions of the leaves 

 broad. R. CoLocensis Menyh. is only a wood form frequent in such 

 situations. The name R. Neapolitmius is older than R. Borceanus, 

 but Linnaeus's name must be retained. 



I regret that at the present moment I have neither time nor 

 opportunity to see how far our English forms would fall into their 

 places in Kerner's arrangement. I believe that R. acris L. (Jordan's 

 R. BorcBanm) is our commonest form. Its leaf-segments are usually 

 narrower, and more deeply cut and lobed than those of any form of 

 R. Steveni. I have never gathered nor have I seen English speci- 

 mens which could be referred to R. Friesianus. It is a larger and 

 stouter plant than any of our English forms of R. Steveni ^ and with 

 very much longer rhizoma. 



SEDUM PRUINATUM Brot. 



By the Rev. R. P. Murray, M.A., F.L.S. 



This very distinct species has been strangely confused with S, 

 rupestre Huds. [S. elegans Lej.). In several of our best-known works, 

 such as Hooker's * Students' Flora,' ed. 3, Willkomm & Lange's 

 ' Prodromus Florae Hispauicae,' and Nyman's ' Conspectus Florae 



