Cacti of Texas and Neighboring States: A Field Guide by Del Weniger

By Del Weniger

Plenty of photos. box advisor for Cacti.

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Extra resources for Cacti of Texas and Neighboring States: A Field Guide

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Rumpl. Arizona Rainbow Hedgehog, Cabeza del Viejo stems Thick, columnar, to 8 in. tall, 4 in. thick; rarely branched, 18—23 narrow, tuberculate ribs. areoles Elongated, to 1/4 in. apart. spines 15—23 radials, pectinate, recurved to lie flat on plant surface, very heavy, rigid; uppers small, translucent tan, amber, or gray; laterals, lowers to 5/8 in. long, tan or amber or amber with red tips, sometimes all red giving banded appearance; no centrals. flowers As var. wenigeri, except outer parts of segments fuchsia, often 13 stigma lobes.

High by 3 in. thick, may have 1—2 branches from main stem; 12—18 ribs, low and tuberculate at areoles, broad, shallow furrows between ribs and between tubercles; pale green. areoles Oval to circular, large, up to 1/4 in. apart; young have much short white or yellowish wool which disappears with age; old almost bare except for wool on floral areole above spines. spines 12—38 radials, straight, rigid, interlocking; may recurve back slightly; upper 4—6 short, weak, 1/4 in. or less; gradual increase in size going around areole; laterals 1/2 in.

R. (Benson: E. reichenbachii var. albispinus) Globose or oblong, becoming cylindrical with age; usually form clusters with up to 30 stems when old; 8 in. tall, 31/2 in. thick; medium green; ribs narrow, somewhat tuberculate. areoles Oval when young, very woolly, becoming elongated when older; usually bare when very old, but may retain mass of dirty white or tawny wool at upper edge; 1/8—1/4 in. apart. spines 12—28 slender, rigid radials, not pectinate, spreading outward from plant, interlocking with adjacent areoles; uppers very small, weak; laterals become progressively longer, 5/8—1 in.

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