Tab. 7893. 

 SEMPERVIVUM urbicitm. 



Native of the Canary Islands. 



Nat. Ord. Crassulaceje. 

 Genus Sempervivum, Linn.; (Benth. & Hook.f. Gen. Plant, vol. i. p. 660.) 



Sempervivctm {Monmm) urbicum; fruticosum, caale erecto-l-3-pedali robusto 

 cylindraceo inferne nudo, cortice ciuereo, cicatricibus rhomboideis 

 tessellato, foliis apicem versus caulis dense rosulatis 4-6 poll, longis 1—3 ^ 

 poll, latis angnste spathulatis cuspidate crassis glabris ciliato-serrulatis 

 sessilibus, v. basi in petiolum tetragonum angustatis ptllide viridibus, 

 subtus costa lata percursis, panicula magna pyramidali 2-3-ped. alta, 

 ramis patenti-decurvis gracililms basi foliaceo-bracteatis longe nudia 

 apices versus ramulosis et foliis paucis parvis ovatis instrnctis viridibua 

 multifloris, rloribus £ poll. diam. breviter pedicellatis pallida aureis, 

 calyce cupulari breviter 8-10-dentito glaberrimo, petalis 8-10 oblongo- 

 lanceolatis acutis, filamentis glabris filiformibus ima basi dilatatis, 

 aDtheris oblongis apiculatis, disci glandulis qualratis, carpellis ad 10 

 erectis oblong : s viridibus in stylos gr.iciles ovario fequilongis attenuatU. 



S. urbicum, Chr. Smith, ex Hornem. Suppl. Sort. Hafn. p. (JO (non Lindl.) 

 Raw. in Phil. Mag. 1827. p. 125. Bach, Pliys. Beschr. Canar. Ins. 

 p. 177. DC. Prodr. vol. iii. p. 411. 



JEmiura. urbicum, Webb & Berth. Phytogr. Canar. vol. i. p. 194, t. 29. 



The Atlantic Islands are remarkable for the number of 

 indigenous species of Sempervivum which they contain, 

 upwards of forty being enumerated in the " Index 

 Kewensis" as natives of Madeira and the Canary Islands; 

 a singular fact when it is considered that only one species 

 has hitherto been collected in the adjacent territory of 

 Morocco, and that a very different plant from any Canarian. 

 On the other hand, nine species of Sedum are recorded 

 from Morocco, and only one, the Mediterranean S. ruberu, 

 DC, from the Canary Islands. 



Sempervivum urbicum is described by Webb as inhabiting 

 rocks, walls, and roofs in the sylvan region of Teneriffe. 

 The specimen here figured was presented to the Royal 

 Gardeus, Kew, by Mr. Van den Bosehe, of Tirlemont, 

 Belgium, in 1901. It flowered in the Succulent House in 

 May, 1902. 



Descr. — Stem erect, three feet high, simple, stout, 

 cylindric, covered with rhomboidal leaf -scars. Leaves 

 May 1st, 1903. 



