Dr. Smitu’s Remarks on the Sedum ochroleucum. 7 
The plant has so entirely the appearance of a Sedum and not 
of a Sempervivum, and I have always thought those genera so 
natural, and so well marked by the technical character of nec- 
tariferous scales at the base of the germen in the former, which 
the latter wants, that I have often regretted to read Jacquin’s 
account, which I presumed was correct. But meeting with this 
plani in Dr. Sibthorp's Greek herbarium, it became necessary 
to investigate its characters myself. In the winter time I could 
only examine one of his specimens by means of hot water; but 
there, to my great satisfaction, I found the nectariferous scales 
as evident as in any Sedum whatever; and on dissecting living 
flowers last summer in my garden, the same character was every 
where obvious. In number of parts indeed this flower wanders 
a little from the character of that genus, and from its class De- 
candria, having often, when cultivated, as many petals, sta- 
mens and pistils as Jacquin describes, or even more, though 
this is chiefly the case in the first flowers of the cyme, and not 
so much in the external ones. I have therefore introduced the 
. plant in question into thé second part of the Prodromus Flore 
Grece, p. 312, by the name of 
SEDUM OCHROLEUCUM, 
foliis glaucis sparsis acutis: inferioribus teretibus; superioribus 
ellipticis depressis, laciniis calycinis acutiusculis, 
It is curious that Linnzus, in a manuscript note, has referred 
this plant of Jacquin to his own Sedum rupestre, a very different 
species, which he had adopted from Dillenius’s Hortus Eltham- 
ensis; see Engl. Bot. t. 170 and t. 1802. 
Dr. Sibthorp, who was well acquainted with his learned friend 
Jacquin's plant, mentions it in his papers as one of the most 
common 
