Echinocereus rayonesensis N P Taylor 1988
Plants with many stems, branching at ground level. Stems erect, cylindrical, 12-28 cm (4.7-11 in) high, 2.5-4.5 cm (11.8 in) in diameter, obscured by heavy spination. Ribs 10-15, tuberculate. Spines glassy white to yellowish, hairlike or slender. Central spines 5-9, pointing downward, 3-5 cm (1.2-2 in) long. Radial spines 15-25, sometimes more, 0.7-15 cm (0.3-0.6 in) long. Flowers borne on the sides of the stems, broadly funnelform, purplish magenta with white throats, 2.5-6 cm (1-2.4 in) long, 2.8-6 cm (1.1-2.4 in) in diameter. Fruits elongate, olive green to brown. Distribution: valley of Rayones, Nuevo León, Mexico.
Echinocereus pulchellus subsp. sharpii
Echinocereus reichenbachii (TerscheckexWalpers) F. Haage 1859
buck lace cactus, classen's cactus, fitch's hedgehog cactus, lace cactus, merry widow cactus, purple candle cactus
Echinocactus reichenbachiiJerscheck ex Walpers 1843 Cereus caespitosus Engelmann 1845, Echinocereus caespitosus (Engelmann) Engelmann 1848; E. reichenbachii subsp. caespitosus (Engelmann) Blum & Lange 1998, not validly published Cereuspectinatus [var.] armatus Poselger 1853, Echinocereus arma-tus (Poselger) A. Berger 1929, E. reichenbachii subsp. armatus (Poselger) N. P. Taylor 1997, E. fitchii subsp. armatus (Poselger) Blum etal. 1998
Echinocereus baileyi Rose 1909, E. reichenbachii subsp. baileyi
(Rose) N.P.Taylor 1997 Echinocereus fitchii Britton & Rose 1922, E. reichenbachii subsp.
fitchii (Britton & Rose) N. P. Taylor 1997 Echinocereus perbellus Britton & Rose 1922, E. reichenbachii subsp.
perbellus (Britton & Rose) N. P. Taylor 1997 Echinocereus albispinus Lahman 1935 Echinocereus purpureus Lahman 1935 Echinocereus meianocentrus Lowry 1936, not validly published Echinocereus mariae Backeberg 1965
Echinocereus reichenbachii var. aibertii L. D. Benson 1969, E. fitchii subsp. aibertii (L. D. Benson) Blum & Lange 1998
Plants solitary to branching with 12 or more stems, obscured by spines. Stems globose to cylindrical, erect, tapering toward the tips, often constricted, light to dark green, to 40 cm (16 in) high and 10 cm (3.9 in) in diameter. Ribs 10-19, narrow, with low tubercles. Central spines 0-7, slender, variously colored, 1-20 mm (to 0.8 in) long. Radial spines 12-36,
Echinocereus reichenbachii subsp. fitchii pectinately arranged, 3-25 mm (to 1 in) long. Flowers borne near the stem tips, funnelform, fragrant, pink to magenta, with darker or white throats, 5-12 cm (2-4.7 in) long, to 12 cm (4.7 in) in diameter. Fruits globose to ovoid, green with white pulp, dehiscing longitudinally. Distribution: southwestern United States and northeastern Mexico.
Five subspecies of Echinocereus reichenbachii are recognized. Subspecies reichenbachiihas no central spines, 18-30 or more radials, and almost linear areoles; it occurs in northern central and southern Texas, adjacent Oklahoma, and in northeastern Mexico in Coahuila, Nuevo León, and Tamau-lipas. Subspecies armatus has 1-2 central spines, as many as 23 radials, and linear-elliptic areoles; it occurs west of Monterrey, Nuevo León. Subspecies baileyi has 1-3 central spines, as many as 14 radials, and narrowly elliptic areoles; it occurs in Great Plains grassland in Oklahoma and adjacent Texas. Subspecies fitchii has 1-7 central spines, as many as 22 radials, and elliptic areoles; it occurs in brushland along the Rio Grande in south Texas and adjacent Nuevo León and Tamau-lipas and is listed (syns. E. meianocentrus, E. reichenbachii var. aibertii) as endangered in the U.S. Endangered Species Act. Subspecies perbellus has 0-1 central spine, fewer than 20 radials, and elliptic areoles; it occurs in Great Plains grassland in Colorado, New Mexico, and central Texas.
Continue reading here: Echinocereus rigidissimus Engelmann F Haage 1897
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