Xerophyte

Central Spines

1-3 often absent, stouter becoming whitish with age.

Seeds

Black.

Description

Rebutia steinbachiiSN|11512]]SN|5221]] subs. tiraquensis best known as SulcoSN'>12577' alt='5221'>Rebutia tiraquensis#SN#11512'>Sulco[[Rebutia tiraquensisSN' style='border

Roots

Mostly non-succulent, fibrous roots. More than 90% of the plant is concentrated in the stem.

Flowers

Arising from monoflorous areoles, in lower lateral flower zone. Rarely more than 3,5 cm long and 4,5 in diameter. Bright pink to light purple, numerous in a ring at the base of the plant.

Blooming Season

April - May and remain open for up to five days.

Ribs

12-26, spiralling, forming oblong rhomboid tubercles with well-defined grooves.

Stem

Soft globular, flattened and somehow apically depressed, greysh-green to dark green sometime very dark magenta-green.

Radial Spines

12-13 dense, erect, thin, bristle-like and flexible, white, yellowish, brownish, reddish or mahogany red with darker tips The spines are often absent in new areoles and slow to develop.

Fruits

Small papery olive green to reddish brown at maturity.

Areoles

Elongated with short grey felt (almost naked) 3 – 6 long, 1,5-2 mm large.