Echinocereus barthelowanus

Echinocereus barthelowanus is a species of Echinocereus.

Background
Plants cespitose, forming large clusters; stems cylindric, 1 to 2 dm. long, 4 to 5 cm. in diameter; ribs about 10, somewhat tuberculate below, bat completely hidden by the stout numerous spines; areoles approximate, 2 to 5 mm. apart, white-felted when young; spines numerous, acicular, sometimes 7 cm. long, pinkish when quite young, afterward white or yellow with brown or blackish tips, in age becoming gray; flowers only 10 to 12 mm. long; perianth-segments oblong, 3 to 4 mm. long, ovary minute, strongly tubercled, hidden under the mass of spines; spine-custers on ovary with 6 to 12 white or pinkish tipped opines, half as long as the flower.