Xerophyte

Central Spines

Up to 2 curved upwards, greyish-pink, tip iridescent black, greying over the time, up to 3 cm in length.

Seeds

Kidney-shaped, 1.5 mm long, 1 mm thick, black-brown.

Note

This member of the Cactaceae family was given the name pachacoensis for the occurrence near Pachaco, San Juan, Argentina.

Flowers

Nearly apical, Funnel-shaped, wide, yellow-green to yellow, 3.5 cm long and in diameter. Ovary conical green with small blue-green scales, with light-brown hairs. Tube with yellow-green, with yellow-green scales, ending in a brown papery tips with light-brown wool and long brown bristles. Outer tepals lanceolate, bent outward, pale yellow with red-brown median strip. Inner tepals lanceolate, toothed, pale yellow with wine red central stripe and tips. Throat yellow. Stamens and anthers light yellow. Style thick with 8 yellow stigma lobes.

Ribs

About 13, tuberculated vertical or slightly twisted. Tubercles up to 10 mm in length.

Stem

Single, spherical to slightly elongated, pale grey-green, glaucous, up to 10 cm tall and 8 cm in diameter.

Radial Spines

8-12 similar to central but thinner, whitish-grey to pink, 4 to 6 of which paired and one pointing downward bent toward the stem, 10-15 mm cm long. Spines all subulated thickened at the base.

Fruits

Barrel-shaped, 8 mm long and 5 mm in diameter, reddish brown, with white hairs, white and red-brown and dark-brown bristles.

Areoles

Large, oval, 5 mm long at first covered with white felt later bare.