Yuccas of the Southwestern United States, Parte 1

Amer anthesis apex April April 28 arborescent Arizona arizonica Baccatae series base Bigelow blade bracts breadth at insertion California Canyon carnerosana Charleston Mts cited Clistoyucca collected Colorado Creek diameter east Eastwood Engelm Engelmann YUCCA extends Faxoniana fibres filaments fleshy flowers foliage fruit Gard heads of leaves Herbarium inflorescence inflorescence proper Joshua-tree label leaf length M. E. Jones macrocarpa March McKelvey YUCCA Merriam Mexico miles Mohave Desert mountains narrow Nevada Nogales noted ovary Pajarito pedicels perianth perianth-segments pistil range map rarely region River Samuela San Bernardino Sargent schidigera Schott Schottii sheets short Sierra Blanca slender slightly slope southwestern species specimens stem stigmas style tapered Texas thickened Thornberi Treculeana tree Trelease's type locality typical plant U. S. Nat Utah Valley variety writer wrote Yucca baccata YUCCA BREVIFOLIA YUCCA BREVIFOLIA Engelmann YUCCA FAXONIANA YUCCA SCHIDIGERA YUCCA SCHOTTII YUCCA TORREYI YUCCA TRECULEANA