About Pelecyphora dasyacantha subsp. dasyacantha
Pelecyphora dasyacantha subsp. dasyacantha typically grows as a single individual, and occasionally produces new sprouts. Its shoots range in shape from depressed spherical to short cylindrical, reaching up to 20 centimeters in height and 4 to 7 centimeters in diameter. Dense white thorns cover the entire shoot surface. The species has warts up to 10 millimeters long; older warts located at the base of the shoots are often corked and lack thorns. It has seven to 17 strong, white central spines that measure 2.5 centimeters long. There are 25 to 50 or more strong, white marginal spines, which range from 0.6 to 2.5 centimeters in length. Its flowers are generally pink to brownish, and occasionally greenish. The flowers grow up to 2 centimeters long, with a diameter between 1.5 and 2 centimeters. Due to the dense, stiff spines covering the shoot, the flowers rarely open completely. The fruits are red and club-shaped, reaching up to 10 millimeters in length. This subspecies is distributed in the United States in the states of New Mexico and Texas, and in the Mexican states of Chihuahua, Coahuila, Nuevo León, and Zacatecas.
