Aeonium
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x gordonii   Bañares, 2007

Par: Aeonium dodrantale (Willd.) Mes × Aeonium haworthii  Webb & Berthel.

Greenovia dodrantalis  (Willd.) Webb & Berthel. × Aeonium haworthii  Webb & Berthel., in Praeger, Semperviva of the Canary Islands area, Proceedings of the Royal Irish Academy 38 Sect.B (1): 460, 486-487, t.14, fig. 25. (24 Sep) 1929.  

Greenonium ×rowleyi  Bramwell, in Jacobsen & Rowley, Some name changes in succulent plants, Part V, National Cactus and Succulent Journal 28(1): 7. (Mar) 1973.

Aeonium ×gordonii Bañares, Híbridos de la familia Crassulaceae en las islas Canarias, Vieraea 35: 13. 2007.

Etym: Named for the English botanist Gordon Douglas Rowley (1921- ).

T: Islas Canarias, Tenerife, nr. Carrizal; Oscar Burchard.

HT: Sketch of plant & leaf, in Praeger, Semperviva of the Canary Islands area, Proceedings of the Royal Irish Academy 38 Sect.B (1): 487, t.15, fig. 26. (24 Sep) 1929. Autotype (Art. 9.1). The only included element.

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

Habit of G. dodrentalis but larger.

Stem short, rather slender, with short patent branches.

Rosettes flattish-globular, rather dense, 6 - 8 cm across.

Leaves sessile, glabrous, fresh green, ovate-spathulate, 4 - 5 x 1.5 - 2.5 cm, margin whitish, cartilaginous, extremely eroded and subciliate with thick obtuse hyaline irregular projections, sometimes mixed with short glandular hairs.

Flower-stem 30 - 40 cm high, densely leafy, inflorescence 10 - 15 cm long, 10 - 12 cm broad, intermediate in character between the parents.

Flowers pale yellow, 12- to 14-parted, 2 cm across, calyx glandular-pubescent, 5 mm long, petals linear-lanceolate, 1 cm long, glandular-pubescent, ciliate. Hypogynous scales absent.

"The flowers fade with age to a whitish yellow. The young petals bear on the outside a trace of the rosy flush characteristic of the pale yellow flowers of haworthii. The rosettes are twice the size of those of doderntalis, the leaves greener and cuspidate, the stem longer, and the inflorescnece and flowers much more of the type of haworthii, though the absence of scales brings one back to Greenovia. The leaf-margins, where the strong tooth-like ciliation of haworthii wars with the smooth cartilaginous minutely glandular-pubescent margin of dodrentalis, are the must striking feature of the plant" (Praeger 1929).

 



Aeonium ×gordonii  HT from Praeger, Semperviva of the Canary Islands area, Proceedings of the Royal Irish Academy 38 Sect.B (1): t.14, fig. 25. (24 Sep) 1929.

 




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