number of the parts of fructification, by which these genera 

 have been always distinguished. Mr. Webb therefore, in his 

 work on the Canaries, has remodelled these genera, assigning 

 them new characters, and separating from them three groups, 

 to which the names JEonium, Aichri/soji, and Greenovia are 

 severally applied. 



Of these the genus iEonium at least seems well charac- 

 terized by having its seed-vessels partially sunk in the recep- 

 tacle and not regularly opening by the ventral suture, but only 

 at the base and back by an irregular tearing. Of the plants 

 referred to this genus, one, " which may be regarded as the 

 precursor of the genus," is the Sempervivum arboreum, which 

 occurs farthest to the northward ; three others are from Ma- 

 deira, viz. S. glandulosum, tabukeforme, and glutinosum ; the 

 rest are from the Canaries, and include Sempervivum Smithii, 

 barbatum, villosum, ciliatum, csespitosum, Haworthii, urbicum 

 and canariense. 



The plant now figured was raised some years ago in the 

 Nursery of Mr. Young of Milford, from seeds sent by Mr. 

 Webb from the Canaries ; where it is found on the stones and 

 bare rocks of the ancient cavern of Tigalate, near the base of 

 the Pine region of the isle of Palma, on the road from Mazo to 

 Fuencaliente. It was named in allusion to the streaks of 

 crimson on its leaves, and to the w T ounds which Messrs. Webb 

 and Berthellot received from an accident in the neighbourhood 

 of the basaltic rocks where it grows. The height of the plant 

 in its wild state is said to be about two feet ; the specimen 

 from which our figure was taken was not half so tall. 



Our figure was executed in May, 1834. 



It requires the same treatment as Mesembryanthemum 

 and similar plants, like most of which it is best cultivated in 

 wide, shallow pots, well drained with potsherds, and filled 

 with a mixture of loam and old mortar, covered with fine sand. 

 It. requires a warm dry situation during summer, and a cool 

 situation with very little water during winter. 



