Rebutia pygmaea var. diersiana

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Rebutia pygmaea var. diersiana R631 (Collector: Walter Rausch Locality: Camargo - Culpina, Chuquisaca, Bolivia) This simple plants create amazingly rich shapes with intensely coloured, orange flowers produced in abundance from the lower stem.
	The stems are dark reddish-violet and would appear that in cultivation they grow larger and cluster more vigorously than in habitat.
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This is a positively stunning plant when old enough to form a clump and one of most beautiful rebutias. The photo does not do it justice.
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Family: Cactaceae (Cactus Family)

Scientific name: Rebutia diersiana Rausch 1975

Description: W. Rausch
Published in: Kakteen und andere Sukkulenten, 26: 25-26, 1975 / K. u. a. S., 26 (2): 25, 1975

Habitat: They grow on steeply sloping ground where water rarely stands for any length of time

Conservation status: Listed in CITES appendix 2.

Synonyms:

Rebutia pygmaea (Fries) Britton & Rose
Lobivia pygmaea
Mediolobivia pygmaea diersiana
Mediolobivia diersiana atrovirens
Mediolobivia pygmaea nigrescens hort.

Description: Very small multi-headed plants, slow growing and slow to clump.
Stem: Dark reddish-violet body, cylindrical, individual heads 2 cm wide, 4 cm tall. With exposure to strong light the body turns a rich violet-chocolate-bronze. The violet colour intensify in the winter.
Areoles: Elongated with greyish wool.
Spines: Short, pectinate, glass-white.
Flowers: Beautiful orange coloured flowers.
Roots: Tap root:.

Cultivation: it is easy to grow and recommended for beginners. Prefer gritty, porous mix with a pH slightly on the acidic side. Full sun to light shade, Water regularly in summer but do not overwater (the root system is rot prone) and allow the pot to dry out between waterings. Keep dry in winter Hardy to -4°C it will take low temperatures when dry and do require a winter rest period.
Pest and disease: This plants are subject to mealy-bug attack and to fungus and rot problems brought about by overwatering and high humidity.

Note: It would appear that in cultivation they grow larger and cluster more vigorously than in habitat.

Propagation: seed or offsets.

Photo of conspecific taxa, varieties, forms and cultivars of Rebutia pygmaea . (This taxon has lots of synonyms (like most Rebutia) whit several controversial varieties and subspecies):

R. pygmaea
R. pygmaea v. diersiana (R. pygmaea)
R. colorea (R. pygmaea)
R. gracilispina (R. pygmaea)
R. haagei (R. pygmaea)
R. haefneriana (R. pygmaea)

Other synonyms for R. pygmaea (Fries) Britton & Rose:
Digitorebutia haagei var. orurensis Rebutia orurensis Lobivia pectinata Digitorebutia haagei var. pectinata Rebutia paucicostata Rebutia pauciareolata Rebutia pallida Digitorebutia orurensis Digitorebutia pectinata Mediolobivia pectinata var. orurensis Mediolobivia orurensis Mediolobivia haagei var. pectinata Lobivia orurensis Lobivia atrovirens var. pseudoritteri Rebutia odontopetala Lobivia neo-haageana Rebutia nazarenoensis Rebutia pygmaea var. nazarenoensis Lobivia haagei var. nazarenoensis Mediolobivia haagei var. orurensis Rebutia tafnaensis Digitorebutia nazarenoensis Lobivia atrovirens var.yuncharasensis Rebutia yuncharasensis Rebutia violascens Lobivia pygmaea var. violaceostaminata Rebutia tropaeolipicta	Rebutia villazonensis Rebutia yuquinensis Lobivia pygmaea var. polypetala Lobivia pygmaea var. tafnaensis, Lobivia haagei var. pelzliana Rebutia salpingantha Rebutia rutiliflora Rebutia rosalbiflora Rebutia atrovirens var. pseudoritteri, Rebutia pseudoritteri Rebutia polypetala Rebutia peltzliana Rebutia pelzliana Rebutia torquata Lobivia atrovirens Rebutia crassa Lobivia haagei var. crassa Rebutia colorea Rebutia canacruzensis Mediolobivia atrovirens Mediolobivia haagei var. atrovirens Digitorebutia haagei var. atrovirens Rebutia pygmaea Lobivia digitiformis Digitorebutia atrovirens Lobivia haagei var. elegantula Rebutia atrovirens Rebutia amblypetala	Rebutia rosalbiflora var. amblypetala Mediolobivia pygmaea Lobivia pygmaea Echinopsis pygmaea Rebutia mudanensis Rebutia violaceostaminata Mediolobivia pectinata var. atrovirens Mediolobivia haagei Rebutia mixticolor Rebutia mixta Rebutia lanosiflora Lobivia pygmaea var. knizei Rebutia knizei Rebutia iscayachensis, Rebutia iridescens Lobivia atrovirens var. haefneriana Mediolobivia haefneriana Rebutia diersiana Rebulobivia haagei Digitorebutia haagei Rebutia haagei, Acantholobivia haagei Rebutia gracilispina Rebutia friedrichiana Rebutia eos Rebutia haagei var. elegantula Rebutia elegantula Rebutia haefneriana

All the information and photos in cactus art files are now available also in the new the Enciclopedia of Cacti. We hope you find this new site informative and useful.