Xerophyte

Habit

Plants usually solitary. Multiple branches may also been produced when the apex is damaged.

Central Spines

4, cross shaped, lowermost one longest, blunt, needle-like, stout, mostly yellowish,but also reddish or brownish, inclined outward, to 15 mm long.

Seeds

With a distinctive longitudinally-oriented fine striate cuticular sculpturing.

Description

Parodia werdermannianaSN|16481]]SN|16481]] (best known as Notocactus werdermannianusSN|16482]]SN|16482]]) is a poorly known species from Uruguay with delicate and colourful spines varying from yellowish-white to brown. Several of its colour and morphological variant was early classified in garden trade as different independent varieties, but nowadays all this plant are considered part of a multiform species, where each variant form is linked to others by populations of plants with intermediate characteristics. The flowers are very showy, glossy yellow.

Flowers

6 or more produced together around the stems apex, sulfur yellow, to 6 cm long and 7 cm in diameter.

Ribs

Numerous (up to 40), straight, low, with many fairly large chinlike humps below the areoles..

Stem

Spherical to club shaped, yellow-green, slightly depressed apically, to 13 cm high and 10 cm in diameter.

Radial Spines

10-20, (5-merous) yellowish white, adpressed or more or less erect, to 5 mm long.