. Cyclopedia of American horticulture, comprising suggestions for cultivation of horticultural plants, descriptions of the species of fruits, vegetables, flowers, and ornamental plants sold in the United States and Canada, together with geographical and biographical sketches. Gardening. 516 ECHINOCACTUS -ECHINOCACTUS diam.), profusely branched at base: ribs 13-21 (occa- sionally 10): spines 8-15, very stout and compressed, more or less recurved and reddish; radials 4-11, com- pai'atively slender (the uppermost the most slender), 1-2 in. long; the 4 centrals much stouter and longer (IK to two a
. Cyclopedia of American horticulture, comprising suggestions for cultivation of horticultural plants, descriptions of the species of fruits, vegetables, flowers, and ornamental plants sold in the United States and Canada, together with geographical and biographical sketches. Gardening. 516 ECHINOCACTUS -ECHINOCACTUS diam.), profusely branched at base: ribs 13-21 (occa- sionally 10): spines 8-15, very stout and compressed, more or less recurved and reddish; radials 4-11, com- pai'atively slender (the uppermost the most slender), 1-2 in. long; the 4 centrals much stouter and longer (IK to two and four-fifths in.), very unequal, the upper- most one usually broadest and curved upward, the low- est one usually the longest and decurved: flowers yel- low. From Utah to northern Mexico. 41. virid6scens, Nutt. Globose or depressed, simple or branching at base, 4-12 in. high, G-10 in. in diam.: ribs 13-21 (fewer when young), compressed and scarcely tuberculate: spines more or less curved and sometimes twisted, reddish below, shading into greenish or yellow- ish above; radials 9-20,two-fifths to four-tifths in. long, the lowest shortest, robust, and decurved; centrals 4, cruciate, much stouter, compressed and 4-angled, four- fifths to one and two-flfths in. long, the lowest broadest, longest and straightest: flowers yellowish green, about one and three-fifths in. long. Southern California. 42. Lec6ntei, Engelm. Resembles Wislizeni, but often somewhat taller (sometimes becoming 8 ft. high and 2 ft. in diam.), usually more slender, and at last clavate from a slender base: ribs somewhat more inter- rupted and more obtuse: lower central spine more flat- tened and broader, curved (rather than hooked) or twisted, usually not at all hooked, sometimes as much as G in. long: flower rather smaller. From the Great Basin to Mexico and Lower California. 43. Sileri, Engelm. Globose: ribs 13, prominent, densely crowded, with short rhombic-angled tubercles: radial spines 11-13, white; central
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