Aeonium
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x santosianum   Bramwell & Rowley, 1973

Aeonium goochiae  Webb & Berthel. × Aeonium palmense  Webb ex H.Christ.

[Or Aeonium goochiae  Webb & Berthel. x Aeonium canariense  (L.) Webb & Berthel. when palmense is reduced to a variety of A. canariense. (Art. H.5.2)]

 

Aeonium goochiae  Webb & Berthel. × Aeonium palmense  Webb ex H.Christ, in Praeger, Semperviva of the Canary Islands area, Proceedings of the Royal Irish Academy 38 Sect.B (1): 474, t.11, fig. 13. (24 Sep) 1929.

 

Aeonium ×santosianum  Bramwell & G.D.Rowley, Some name changes in succulent plants, Part V., National Cactus and Succulent Journal 28: 5. (Mar) 1973.

 

Etym: Named in honour of Arnoldo Santos-Guerra (1948- ).

 

T: Islas Canarias, La Palma, Barranco de las Quinteras, W of Santa Cruz de La Palma; 1924, R. Lloyd Praeger.

HT: Sketch of leaf, in Praeger, Semperviva of the Canary Islands area, Proceedings of the Royal Irish Academy 38 Sect.B (1): 474, t.11, fig. 13. (24 Sep) 1929.  Autotype (Art. 9.1). The only included element.

Obs: In Bañares (Vieraea 43: 195, 2015), Art. 40.1 (lack of type) is cited as a reason for a superfluous reneotypification, but Praeger's sketch was referred to in the validation by Bramwell & Rowley as “1929: 474”, the place of publication of the protologue description, where there is also a reference to the illustration as “Plate XI, fig. 13”. This is the only included element of Praeger's description and thus also of Bramwell & Rowley's validation.

 

Description (according to Praeger, An Account of the Sempervivum Group, 1932) :

Intermediate between the parents. Subshrubby, a foot high with few slender bright brown branches 4 mm thick, irregularly clothed with withered leaves.

Leaves loosely rosulate, resembling palmense in shape and colour but less densely glandular-pubescent, sticky as in goochiae, not merely clammy. 



Aeonium ×santosianum (goochiae × palmense) Holotype image from Praeger, Semperviva of the Canary Islands area, Proceedings of the Royal Irish Academy 38 Sect.B (1): 474, t.11, fig. 13. (24 Sep) 1929.

 

 

 



Sketch from A. Santos Guerra, Vegetacion y flora de La Palma, 1983, p. 178.




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