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T. rioverdensis
Photo by
Paolo conti
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Description: Stem are usually solitary, depressed globular, 1.5 cm
high 2.5-3.5 cm wide light green. With low rhomboidal and very flat
tubercles; young areoles woolly, later bare. It has a swollen taproot.
Spines: 1-3 papery twisted cream/brown coloured, to 12mm long. no
central spine
Flowers: White 25mm long at the top of the stem, outside petals
with greenish mid-stripes.
Cultivation:
This species is relatively easy to
cultivate. Requires full sun and careful watering to keep plant compact
and low. It has a tap root, and watering it properly is often difficult
and tends to crack open or rot if over-watered. Requires
full sun and careful watering to keep plant compact. Hardy to -4°C for a
short period.
Photo of conspecific taxa, varieties, forms
and cultivars of plants belonging to the Turbinicarpus
schmiedicheanus aggregate: (This
taxon has lots of synonyms, with
several controversial varieties and subspecies):
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Cultivation and Mail Sale 
