Aeonium
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x junionae Bramwell & Rowley, 1973

Par. Aeonium ciliatum  Webb & Berthel. × Aeonium palmense  Webb ex H.Christ

[or Aeonium canariense  (L.) Webb & Berthel. × Aeonium ciliatum  Webb & Berthel. when A. palmense is considered to be included in A. canariense. (Art. H.5.2)

or Aeonium canariense  (L.) Webb & Berthel. × Aeonium davidbramwellii  H.-Y.Liu if davidbramwellii is considered to be different from ciliatum.]

Sempervivum christii  Praeger nom. illeg. [= Aeonium palmense  H.Christ] × Sempervivum "urbicum", Praeger, Notes on Canarian and Madeiran Semperviva, Transactions of the Botanical Society of Edinburgh 29: 200. 1925 nom. nud.

Aeonium ciliatum  Webb & Berthel. × Aeonium palmense  Webb ex H.Christ, Praeger, Semperviva of the Canary Islands area, Proceedings of the Royal Irish Academy 38 Sect.B (1): 471, t.10, fig. 8. (24 Sep) 1929.

Aeonium ×junionae  Bramwell & G.D.Rowley, in Jacobsen & Rowley, Some name changes in succulent plants, Part V, National Cactus and Succulent Journal 28(1): 5. (Mar) 1973.

Etym: Not explained. Some authors have assumed that it derives from the Latin name for the island of La Palma, Junonia Major, but that is not certain. Rowley continued to use the original spelling so it was intentional and therefore should not be 'corrected'. Rowley's sense of humour is such that he may have decided to make Juniona an anagram of Junonia, and specific epithets can be arbitrarily formed from any source whatsoever (Art. 23.2).

T: Islas Canarias, La Palma, frequent where both parents occur together; 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): 471, t.10, fig. 8. (24 Sep) 1929. Autotype (Art. 9.1). The only included element.

Obs: In the Barranco Angustias, the presence of many plants "of identical character" suggests that there are allopolyploids at that location. In Bañares (Vieraea 43: 193-194, 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: 471”, the place of publication of the protologue description, where there is also a reference to the illustration as “Plate X, fig. 8”. 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 Grouup, 1932) :

"Quite intermediate; often monocarpic.

Stem short or up to 30 cm high, branches few or none, when present short, horizontal.

Rosette large, 15 - 20 cm across.

Leaves broadly spathulate, apiculate, soft and fleshy, often reddish in upper part, usually glandular-pubescent, margin serrate-ciliate with robust deltoid forward-curved cilia mixed with pubescence.

Inflorescence and flowers intermediate.

Flowers pale yellow.

Habitat : Canary Islands : La Palma, frequent where the parents grow together, but occurring mostly as isolated plants.

Even when the rosette is glabrous as in ciliatum, the inflorescnece is glandular-pubescent, sticky and balsamiferous as in palmense."



Aeonium ×junoniae (canariense var. palmense × davidbramwellii) HT from Praeger, Semperviva of the Canary Islands area, Proceedings of the Royal Irish Academy 38 Sect.B (1): 471, t.10, fig. 8. (24 Sep) 1929.

 




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