Aylostera albipilosa description


The original description of Rebutia (Aylostera) albipilosa 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 in Latin as published, with my own English translation below, but you should look up the original description for more details.

Rebutia albipilosa (subg. Aylostera) Ritter, sp. nova

Corpus hemisphaericum, dein longius, parce proliferans, atroviride, 4-5cm diam.; radice rapacea; costae in tubercula 2-4mm diam., 2mm alta solutae, interdum 21-25, spiraliter volutae; areolae orbiculares vel ovales, albae, 1-2mm diam.; spinae 25-35, capillaceae, molles, albae, plerumque curvatae, 10-15mm longae, centrales (si adsint) subfortiores, 2-4cm longae, apice rubrobrunneae; flores 35-45mm longi, 25-30mm diam.; ovarium oblongoideum, albo-lanatum et albo-setaceum; tubus floralis 7mm longus, albo-lanatus, haud setosus; tepala 9-15mm longa, 2-5mm lata spathulacea, aurantiaca vel rubra; stamina 7-8mm longa, alba; stylus 15mm longus, basi tubo florali connatus, stigmatibus 4-5, albis; fructus 6-9mm longus, 5-7mm latus, viridi-ruber; semina 1,2mm longa, 0,8mm lata, opaca, atra, verruculosa.

Habitat: Narvaez, Dept. Tarcia, Bolivia. Collected as FR754.

English translation:

Rebutia albipilosa (subg. Aylostera) Ritter, sp. nova

Body hemispherical, later long, branching a little, dark green, 4 – 5cm in diameter; tap-rooted; spiraling ribs divided into tubercles 2 – 4mm in diameter, 2mm high, with 21 – 25mm between ribs; areoles circular to oval, white, 1 -2mm diameter; 25 – 35 spines, hairlike, soft, white, generally curved, 10 – 15mm long, central spines, if present, a little stronger, 2 – 4cm long, with a reddish brown base; flowers 35 – 45mm long, 25 – 30mm in diameter; ovary oblong-shaped, white wooled and with white bristles; floral tube 7mm long, white-wooled, not bristled; petals 9 – 15mm long, 2 – 5mm wide, spatulate, orange to red; stamens 7 – 8mm long, white; style 15mm long, fused at the base to the flower tube, with 4 – 5 white stigmas; fruit 6 – 9mm long and 5 – 7mm wide, greenish red; seed 1.2mm long and 0.8mm wide, dull, black, warty.

Habitat: Narvaez, Dept. Tarcia, Bolivia. Collected as FR754.