Echinocereus scopulorum Britton Rose 1922
Plants solitary. Stems cylindrical, 10-40 cm (3.9-16 in) high, to 10 cm (3.9 in) in diameter, obscured by spines. Ribs 13-15. Central spines 3-10, erect, shorter than the radials. Radial spines about 20, flattened next to the stem, whitish with darker tips, 8-14 mm (0.3-0.6 in) long. Flowers borne near the stem tips, funnelform, fragrant, pale pink to magenta, with white throats, 7-8.5 cm (2.8-3.3 in) long, to 10 cm (3.9 in) in diameter. Fruits not known. Distribution: along the coast of Sonora and on Tiburón Island, Mexico.
Continue reading here: Echinocereus spinigemmatus A B Lau 1984
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