Xerophyte

Habit

Plants solitary but at times forming small clusters by basal branching.

Description

Parodia nigrispinaSN|1141]]SN|1152]] is a very spiny cactus specie forming more or less compact clusters with age. This plant is often synonymized with Parodia schumannianaSN|1152]]SN|1141]], but it has wider and lower growing body, darker brownish-black spines and comes from a totally different type of habitat.

Flowers

up to 6,5 cm long and 7 cm in diameter, yellow, funnelform; scales of the ovary filled with hairs and bristles.

Spines

9 or 10, acicular, thin, not clearly differentiated as centrals and radials 25-60 mm long, dull white to reddish, of which 3-4 longer and darker brownish somewhat curved, slender, often blackish when young, afterwards silvery.

Ribs

20 or more, rather acute, 20-25 mm apart.

Stem

Up to 40 cm tall and 16 cm broad, globose to short-columnar, green.

Fruits

Globular about 1,5 cm in diameter, shiny brown.

Areoles

Circular to oval, 2 mm in diameter, with much white wool in youth and eventually becoming bare.