Xerophyte

Central Spines

None or usually 1 to 3, 10-30 mm long, only slightly stouter of the same colour of the radials.

Seeds

Black.

Description

Rebutia steinbachiiSN|26215]]SN|5221]] often listed under its old name of SulcoSN'>5220' alt='5221'>Rebutia steinbachii#SN#5221'>Sulco[[Rebutia steinbachiiSN' style='border

Phenology

Blossoming time late spring.

Flowers

Arising from monoflorous areoles, in lower lateral flower zone. Rarely more than 3,5 cm long and 4,5 in diameter, yellow, red, magenta or orange with white inner petals. Floral tube funnel-shaped, with broad naked scales.

Crested Growth

The crested form (Rebutia steinbachii f. cristataSN|5221]]SN|26215]]) is very rare and sought after by collectors, for its unique features. It is a small low growing crested cactus that will slowly forms tangled groups up to 30 cm (or more ) in diameter with age. The plant tends to grow seated in substrate, but in cultivation it is almost always seen grafted on columnar cacti. There are several crested clones often very different one to each other.

Ribs

Poorly distinguished, forming oblong rhomboidal grooved tubercles.

Stem

Greysh-green to dark green sometime tinged red.

Radial Spines

9-12 (or more) about up to 20 mm long, acicular, addpressed against the body, ± pectinate to porrect, white, yellow, brown with darker tips or almost black, ± curved slow to develops, frequently absent on new areoles at plant apex.

Fruits

Small papery olive green to reddish brown at maturity.

Areoles

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