MET I TD CR, 
1741 
* SEMPERVÍVUM úrbicum. 
City Houseleeh. 
DODECANDRIA HEXAGYNIA. 
Nat. Ord. CRASSULACEm De Cand. (Introduction to the Natural 
System of Botany, p. 161.) 
SEMPERVIVUM.—Supra, vol. 18, fol. 1553. 
1. Chronobium.  Propagines nulle, Flores sepius flavi, rariüs albi, 
pecies omnes Canarienses aut Maderienses D. C. r 
S. urbicum ; caule fruticoso erecto apice folioso veteribus foliorum cicatricibus 
quadratis tessellato, foliis spathulatis glabris nitidis cartilagineo-ciliatis, basi 
tetragono-attenuatis apice rubro-marginatis. De Cand. Prodr. 3. 411. 
S. urbicum. Horn. suppl. p. 60. ex. D. C. Haworth in Phil. Mag. 1827, 
p. 125. 
Folia atroviridia, spathulata, obtusa; ciliis marginis rigidis cartila- 
gineis. Panicula spithamea, densissima, pyramidalis. Flores glabri, aurei. 
Sguame hypogyne late, truncate, glabre, levissimê emarginate. | 
A greenhouse plaut, found commonly on rocks and the 
roofs of houses in Teneriffe, in inland parts of the Island, 
where the air is damper than ìn the valleys. 
It was first met with by the late Dr. Christian Smith, who 
perished in the disastrous expedition under Captain Tucke 
to the Congo. Latterly it has been found by Messrs. Web 
and Berthelot, in their examination of the Flora of the 
Canaries. We obtained our specimen from Mr. Young, the 
skilful manager of the gy of the former of these Gentle- 
men, at Milford near Godalming. It flowers in the months 
of December, January, and February; and is one of the 
handsomest of the shrubby species of this interesting genus, 
As Messrs Young and Penny of Milford have plants of this 
and other curious things from the Canary Islands for sale, 
the public will have no difficulty in procuring it from them. 
* See folio 1553. 
