Aeonium
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x tabulicum   Bramwell & Rowley, 1973

Par: Aeonium tabuliforme  (Haw.) Webb & Berthel. × Aeonium urbicum  (Hornem.) Webb & Berthel.

Aeonium tabuliforme  (Haw.) Webb & Berthel. × Aeonium urbicum  (Hornem.) Webb & Berthel., in Praeger, Semperviva of the Canary Islands area, Proceedings of the Royal Irish Academy 38 Sect.B (1): 483, t.14, fig.23. 1929.

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

Etym: Condensed formula.

T: Islas Canarias, Tenerife, above Los Silos; R. Lloyd Praeger.

HT: Sketch of a leaf in Praeger, Semperviva of the Canary Islands area, Proceedings of the Royal Irish Academy 38 Sect.B (1): 483, t.14, fig.23. 1929. 

Obs: In Bañares (2015: 196), 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: 483”, the place of publication of the protologue description, where there is also a reference to the illustration as “Plate XIV, fig. 23”. 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) :

Stem short and rather slender as in tabuliforme, up to the present unbranched.

Rosette flat, very dense, 24 cm accross.

Leaves imbricate, about 7 x 3 cm, glabrous, stalked, petiole 3 cm long, compressed, convex on both sides, lamina obovate or transversely elliptical, apex apiculate, base subtruncate, margin with crowded triangular or elongate irregular green-based cilia, mixed with short hyaline hairs.

Habitat : Canary Islands : Tenerife.

"This plant has the flattest and densest rosette of any Aeonium except tabuliforme itself, but the influence of the other parent is very marked in the smooth shining dark green leaves with a trace of red margin, and in the curious ciliation, in which the robust urbicum ciliae are intermixed with others approaching the long needle-like ones of tabuliforme, and also very short slender ones" (Praeger, 1929).



Aeonium ×tabulicum  HT from Praeger, Semperviva of the Canary Islands area, Proceedings of the Royal Irish Academy 38 Sect.B (1): t.14, fig.23. 1929.

 

 




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