Hesperoyucca whipplei (Torr.) Trel. [ Yucca whipplei Torrey]
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Hesperoyucca whipplei (Torr.) Trel. [ Yucca whipplei Torrey] [Agavaceae]
W. Curtis, Bot. Mag., vol. 125 [ser. 3, vol. 55]: t. 7662 (1899) [H. Thiselton-Dyer]