Aylostera tuberosa description


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The original description of Rebutia (Aylostera) tuberosa was published in Taxon 12:1 (1963) pp. 28-29, the journal of the International Association for Plant Taxonomy by Friedrich Ritter.

Here is an excerpt of the main points, but you should look up the original description for more details. Translated from the German.

Rebutia tuberosa (subg. Aylostera) Ritter, sp. nova, corpus hemisphaericum, valde proliferans, viride, 2-4cm diam. Radice rapacea; costae in tubercula 2-4mm alta solutae; areolae, 1,5-3mm longae, 1-1,5mm latae, albae; spinae tenuiter aciculares, 2-5mm longa, luteo-brunneae vel brunneae, rectae, radiales 4-12, centrales 1 vel plures; flores 3,5cm longi, 2,5cm diam.; albo-lanatum, interdum setis albis nonnullis obsitum; tubus floralis infundibuliformis, 7mm longus, albo-lanatus, haud setosus; tepala 13-14mm longa, 4-5mm lata, cinnabarina; stamina biserata, 6-7mm longa, pallide viridia; stylus 18mm longus, 8mm tubo florali adnatus, stigmatibus 6, pallide viridibus; fructus et semina ignota.

Habitat: Below Challamarca, Prov. South-Cinti, Chuquisaca, Bolivia, at an altitude of 2600m. Collected as FR770.