It is characterized by effused, applanate to pulvinate
blackish stromata with brown tones when young, inconspicuous up to 1/4 exposed perithecial mounds; ostiolar truncatum-type discs; amyloid apical rings and brown ellipsoid-inequilateral ascospores with straight germ slits spore-length and dehiscent perispore in KOH.
(The smaller drawing shows a single areole with spines.) Cacti vary in shape from the many pulvinate
(cushion-forming) species of Copiapoa in the Atacama Desert (the drawing shows the cushion growth-form, a longitudinal section of a flower, and the taproot so typical of cacti) to monopodial arborescent forms such as the spectacular candelabro (Browningia candelabris) of the Andean slopes of the Tarapac Desert (Atacama), growing up to 16 ft (5 m) tall.
Telia similar, abaxial, pulvinate
, black, naked, exposed, 0.1-0.2 x 0.2-0.4 mm.
3.5 cm in diameter (not including the primary bracts); Primary bracts foliaceous to subfoliaceous, spreading-recurved; Fascicles 10-11 in number, pulvinate
, 16-17 x 14-16 mm long (excluding the petals), ca.
45 x 28 mm (excluding the petals), flabellate, pulvinate
, 2 to 3-flowered, inspicuously stipitate; floral bracts those of the branches narrowly ovate, obtuse and minutely apiculate, rigid at base and thin in texture toward the apex, stramineous, nerved, entire, densely and conspicuously white-farinose-lepidote, trichomes concealing its color, about equaling to slightly exceeding the sepals, carinate, cymbiform, 37-42 x 16-20 mm, those of the simple part of the inflorescence resembling the primary bracts but suboblong and slightly dilated at its apical half, apex distinctly emarginated and minutely apiculate, distinctly exceeding the sepals and concealing the flowers except for the petals, ca.