. North American trees : being descriptions and illustrations of the trees growing independently of cultivation in North America, north of Mexico and the West Indies . Trees. Mohave Yucca ^S7 6. TORREY'S YUCCA - Yucca Torreyi Shafer Yticca macrocarpa Coville Yucca baccata macrocarpa Torrey, not Yucca macrocarpa Engelmann A much-branched tree of the desert reigon from western Texas westward through New Mexico into eastern Arizona, and southward in Chihuahua. The leaves are yellowish green, to i meter long, 4 cm. wide, gradually nar- rowed above the dark shining base, widest near the noddle,
. North American trees : being descriptions and illustrations of the trees growing independently of cultivation in North America, north of Mexico and the West Indies . Trees. Mohave Yucca ^S7 6. TORREY'S YUCCA - Yucca Torreyi Shafer Yticca macrocarpa Coville Yucca baccata macrocarpa Torrey, not Yucca macrocarpa Engelmann A much-branched tree of the desert reigon from western Texas westward through New Mexico into eastern Arizona, and southward in Chihuahua. The leaves are yellowish green, to i meter long, 4 cm. wide, gradually nar- rowed above the dark shining base, widest near the noddle, rough be- neath, sometimes so above, the apex armed with a stout, long, dark- colored spine, the mar- gin thickened and freely separating into coarse grayish threads. The flowers appear in March and April in dense, ses- sile, or nearly sessile, smooth panicles, the bracts often brownisl: perianth 4 cm. long, the segments acute, th^ outer similar to the inner; stamens shorter ,, ., , , , . 1 . FiG- 117- — Torrey's Yucca. than the style, which is somewhat elongated. The fruit is oblong, to 10 cm. long, about half as thick, rounded at the base, contracted into a stout projection at the apex; its flesh is sweet and juicy; seeds thin and flat, 6 to 8 mm. long, with a narrow 7. MOHAVE YUCCA —Yucca mohavensis Sargent This tree, like the other arborescent Yuccas, is also called Spanish dagger or Spanish bayonet. In general appearance it is similar to the foregoing species, but its range is very different, occurring in the Mohave desert, in the region from south- em Nevada and western Arizona into southern California south of Monterey; also in adjacent Lower California. Its maximum height is meters with a trunk diameter of 2 dm.; but it often remains low and quite trunkless. The trunk is usually simple, rarely having several stout spreading branches. The rind, sometimes exposed at the base of the trunk, is dark brown and roughish. The leaves, which often cover the tru
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