Aeonium
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x tenense   Bramwell & Rowley, 1973

Par: Aeonium ciliatum  Webb & Berthel. × Aeonium haworthii  Webb & Berthel.

Aeonium ciliatum  Webb & Berthel. × Aeonium haworthii  Webb & Berthel., in Praeger, Semperviva of the Canary Islands area, Proceedings of the Royal Irish Academy 38 Sect.B (1): 470, t.10, fig.7. 1929.

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

Aeonium ×floribundum Bañares, Híbridos de la familia Crassulaceae en las islas Canarias. V, Vieraea 43: 191-192, 201, 206. (Dec). 2015 nom. illeg. (Art. 52.1).

Etym: Named for Teno, the municipality on the extreme W of Tenerife, in which the type locality lies.

T: Islas Canarias, Tenerife, on the Montaña de Taco, a low hill c.2km to the NW of Los Silos.

HT: Sketch of a leaf in Praeger, Semperviva of the Canary Islands area, Proceedings of the Royal Irish Academy 38 Sect.B (1): 470, t.10, fig.7. 1929. Autotype (Art. 9.1). The only included element.

Obs: In Bañares (2015: 197), 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: 470”, the place of publication of the protologue description, where there is also a reference to the illustration as “Plate X, fig. 7”. 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) :

Shrubby, 15 cm or more high, much branched, branches as thick as in haworthii.

Leaves intermediate in shape, green, red-tipped, 5 - 8 x 2.5 cm, in rather lax many-leaved rosettes.

Flowering branches and inflorescence as in haworthii.

Flowers white with a greenish tinge, petals as large as but more expanded than in haworthii, slightly serrate-ciliate on edges, stamens and carpels slightly hairy.

Flowering time : May - June.

Habitat : Canary Islands : Tenerife.

A plant of distinct appearence, differing from haworthii x urbicum in its much branched habit, smaller size, smaller green leaves. etc.

 



Aeonium ×tenense  HT from Praeger, Semperviva of the Canary Islands area, Proceedings of the Royal Irish Academy 38 Sect.B (1): t.10, fig.7. 1929.

 








Photos Mateo Lichtenstein



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