Plants shrubby, branching basally with branches sprawling over the ground, to 1 m (3.3 ft) high. Stem segments oblong to round, blue-green, 15-30 cm (5.9-12 in) long. Areoles round, on raised protuberances, brown. Glochids brownish yellow. Spines 10-12, needle-like, yellow, to 1 cm (0.4 in) long, surrounded by long white or yellow hairs that sometimes cover the surface of the stem segment. Flowers pale yellow, becoming salmon with age, to 10 cm (3.9 in) in diameter. Fruits globose, red, fleshy. Distribution: Queretaro and Guanajuato, Mexico.
Opuntia schickendantzii f. a. c. Weber 1898 Austrocylindropuntia schickendantzii (F. A. C. Weber) Backeberg 1951
Plants shrubby, much branched, 1-2 m (3.3-6.6 ft) high. Stem segments cylindrical to somewhat flattened, gray-green, somewhat tuberculate, 1.5-2.5 cm (0.6-1 in) in diameter. Leaves reddish, to 2 mm long. Areoles small, white. Spines 1-2, awl shaped, 1-2 cm (0.4-0.8 in) long. Flowers yellow, to 4 cm (1.6 in) in diameter. Fruits green. Distribution: northern Argentina.
OpUTltia schumannii F. A. C. Weber ex A. Berger 1904
Plants shrubby, forming clumps 1-2 m (3.3-6.6 ft) high. Stem segments obovate to oblong, dull dark green, irregular and wavy marginally, to 25 cm (9.8 in) long. Areoles few, widely separated. Glochids few, soon falling away. Spines 2— 10, very unequal, somewhat twisted, flattened, dark brown, slightly spreading, to 4.5 cm (1.8 in) long. Flowers yellowish red or orange, becoming dull red with age, to 6 cm (2.4 in) long. Fruits oval, dark purple, fleshy, to 5 cm (2 in) long. Distribution: Colombia and Venezuela. Fruits of Opuntia schumannii are used as food coloring (Chapter 2, under Cacti as a Source of Dyes).
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