Turbinicarpus flaviflorus "brevispinus"
(Syn: T. schmiedickeanus ssp. flaviflorus forma brevispina)

This is a very distinctive short spined variant of the famous T. flaviflorus.
This variety has very short corky golden-brown spines that contrast well with the body which is coated in a whitish bloom.

Etymology: The plant  name  “brevispina” comes from Latin for shorter spined. This plant has very short corky golden spines
 

Description: Cylindrical grey-greenish and coated in a whitish bloom 2.5 cm in diameter, 5 cm tall;
Tubercles: conical with a rhomboidal base, Slowly clumping.
Areoles: Small with white caduceus wool.
Spines:  4 spongy, chubby and very short,  2-4 mm long yellow-brownish.
Flowers: Infundibuliform, light yellow-green up 1,5 cm in diameter.
Blooming season: The flowers appear at the plants apex in succession from spring to summer.
Fruit: Longly ovoidal 10 mm long. With dried flowers remnants.
 

Cultivation: Robust species to cultivate. Requires full sun and careful watering to keep plant compact and low. Watering it properly is often difficult and tends to crack open or rot if over-watered. 

Reproduction: Grafting or cutting.

Conservation status: Listed in CITES appendix I

The flowers colour, from which it gets its name are an unusual greenish-yellow and contrast well with the body.
 

Photo of conspecific taxa, varieties, forms and cultivars of plants belonging to the Turbinicarpus schmiedicheanus aggregate:  (This taxon has lots of synonyms  whit several controversial varieties and subspecies):

• T. schmiedicheanus ssp. schmiedicheanus
• T. schmiedickeanus ssp. andersonii
  T. schmiedickeanus ssp. dickisoniae
• T. schmiedickeanus ssp. gracilis
• T. schmiedicheanus ssp. gracilis forma cristata
• T. schmiedickeanus ssp. klinkerianus
• T. schmiedickeanus ssp. klinkerianus "lilinkeuiduus"
• T. schmiedickeanus ssp. polaskii
• T. schmiedickeanus ssp. schwarzii
  and possibly:
• T. schmiedickeanus ssp. bonatzii
• T. schmiedickeanus ssp. flaviflorus
• T. schmiedickeanus ssp. flaviflorus form brevispina
• T. schmiedickeanus ssp. macrochele
• T. schmiedickeanus ssp. rioverdensis
• T. schmiedickeanus forma variegata
• T. rioverdensis ssp. paoli (= T. longispinus)
• T. sp. negrita (=klinkerianus?)