1741 



* SEMPERViVUM urbicum. 

 City Houselcek. 



DODECANDRIA HEXAGYlsllA. 



Nat. Ord. Crassulace^ De Cand. {Introduction to the Natural 

 System of Botany, p. 161.) 



SEMPERVIVUM.— Supra, vol. \%,fol. 1553. 



§ 1. Chronobium. Propagines niillae. Flores ssepius flavi, rarius albi. 

 Species omnes Canarienses aut Maderienses D. C. 



S. vrbicum ; caule fruticoso erecto apice folioso veteribus foliorum cicatriclbus 

 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, 

 ;>. 125. 



Folia atroviridia, spathulata, obtusa ; ciliis marginis rigidis cartila- 

 gineis. Panicula spithamcea, densissima, pyramidalis. Flores glabri, aurei. 

 SquamEe hypogynae latce, truncates, glabrce, levissim^ emarginatce. 



A greenhouse plant, found commonly on rocks and the 

 roofs of houses in Teneriffe, in inland parts of the Island, 

 where the air is damper than in the valleys. 



It was first met with by the late Dr. Christian Smith, who 

 perished in the disastrous expedition under Captain Tuckey 

 to the Congo. Latterly it has been found by Messrs. Webb 

 and Berthelot, in their examination of the Flora of the 

 Canaries. We obtained our specimen from Mr. Young, the 

 skilful manager of the garden 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. 



