Xerophyte

Central Spines

Usually absent (if present usually 1 to 4 porrect and stiff similar in size and colour to the radials).

Seeds

c. 1.5 mm long.Taxonomy note. Copiapoa fiedlerianaSN|1328]]SN|1328]] is possibly the same plant as Echinocactus cupreatusSN|1329]]SN|1114]] Poselger ex Hildmann (1885), which was based on a cultivated plant of unknown origin, but interestingly the description made reference to protuberances, so this, together with body colour, suggests that it might that it might have been this plant.

Roots

Large, napiform, fleshy.

Note

The specific epithet honors the German master carpenter and cactus lover Rudolf Fiedler from Berlin.

Flowers

Yellow, 2.5-3 cm long. Inner tepals lemon-yellow, outer tepals with a red central stripe on the tip.

Spines

Blackish or brown, greyish with age.

Ribs

15-20, straight, deeply crenate, laterally compressed, conspicuously tuberculate below the areoles.

Stem

Globose, not elongated, grey-green to brown, 5-8 cm tall and in diameter. Cespitose from the base, forming dense cushions.

Radial Spines

4-8, needle-like, rigid, straight to slightly curved, 8-30 mm long.

Fruits

Globose 10-15 mm in diameter, greenish with few long reddish scales.

Areoles

Round to oval 4-7 mm long, grey, 20 mm apart.