Rebutia fabrisii description


Rebutia fabrisii was first described by Walter Rausch in Kakteen und andere Sukkulenten 28(3): p. 52-53, 1977, the journal of the Deutsche Kakteen-Gesellschaft. The nominate was described followed by a description of “var. aureiflora”.

Here is the text of both descriptions in Latin as published, together with my own English translations below. You should look up the original for more details in German and a black-and-white photograph of var. fabrisii and a colour photograph of var. aureiflora.

Rebutia fabrisii RAUSCH spec. nov.

Walter Rausch

Globosa, ad 20 mm diamtiens, proliferans, caespites usque ad 100 corporum formans; costis ad 14, spiraliter tortis, in gibberes rotundos, 2 mm diametientes divisis; areolis ovalibus, 1,5 mm longis, albo-romentosis; aculeis marginalibus ca. 20, divaricatis, aculeis centralibus ad 10, aculeis omnibus 2-7 mm longis, vitreo-albis ad flavidis, subfusco-acuminatis.

Floribus 30 mm longis et 25 mm diametientibus; ovario et receptaculo manubriiformi, roseo, squamis fuscis tecto, nudo; phyllis perigonii exterioribus lanceolatis, rubris medio-fusco-striatis; phyllis perigonii interioribus spathulatis,.rubris; filamentis, stylo, stigmatibus (6) albus; stylo et receptaculo dimidio longitudinis connato.

Fructo globoso, 6 mm diametiente, exocarpio tenui, translucido, vitreo-albo-viridulo ad roseo. Seminibus Rebutiae typo, oblongis, ca. 1 mm longis et 0,6 mm latis, atro-nitidis, testa verrucosa, partim longe-verrucosa, hilo magno, volvato, albo.

Patria: Argentina, Jujuy, inter Santa Ana et Valle Colorado, 2.500-2.800 m alt.

Typus: Rausch 688, depositus in Herbario Collectionis Plantarum Succulentarum Municipali Turicensi, Helvetia.

English translation

Rebutia fabrisii RAUSCH spec. nov.

Walter Rausch

Spherical, up to 20mm in diameter, branching, forming clumps of up to 100 bodies; 14 ribs, twisting spirally, divided into round tubercles 2mm in diameter; areoles oval, 1.5mm long, with white wool; ca. 20 spreading, marginal spines, up to 10 central spines, all 2 – 7mm long, glassy white to yellowish, darkening at the tips.

Flowers 30mm long and 25mm wide; ovary and receptacle handle-shaped, pink, with brown scales, bare; outer petals lanceolate, red with a brown central stripe; inner petals spatulate, red; stamens, style & stigmas white; style and receptacle fused over half the flower’s length.

Fruit spherical, 6mm in diameter, with remains of skin attached, translucent, glassy-white / greenish to pink. Seed as for Rebutia, oblong, ca. 1mm long and 0.6mm wide, dark, shiny, with warty skin, splitting longitudinally, with a large, white, bulging navel.

Habitat: Argentina, Jujuy, between Santa Ana and Valle Colorado, 2.500-2.800 m alt.

Typus: Rausch 688, deposited in the Herbarium of the Municipal Succulent Plants Collection in Zurich, Switzerland.

Rebutia fabrisii var. aureiflora RAUSCH var. nov.

Walter Rausch

Differt a typo floribus luteis, minoribus.

Patria: Argentina, Jujuy, inter Valle Colorado et Valle Grande, 2.000 m alt.

Typus: Rausch 687, depositus in Herbario Collectionis Plantarum Succulentarum Municipali Turicensi, Helvetia.

English translation

Rebutia fabrisii var. aureiflora RAUSCH var. nov.

Walter Rausch

Differing from the type in having yellow flowers, and being smaller.

Habitat: Argentina, Jujuy, between Valle Colorado and Valle Grande, 2,000m alt.

Typus: Rausch 687, deposited in the Herbarium of the Municipal Succulent Plants Collection in Zurich, Switzerland.