388 



INDEX 



Viburnum ellipticum 219 



pauciflorum 210 

 Vicia americana 130, 187, 190 



linearis 289 

 Viola 129 



adunca 152 



biflora 210 



blanda 210 



cucullata 130, 190 



glabella 221 



howellii 219 



lobata 214 



neoruexicana 361 



orbiculata 221 



pedata 130 



pedatifida 130 



pedunculata 193 



sempervirens 219 

 Washingtonia divaricata 219, 221 



nuda 214 



obtusa 210 • 

 Whitneya dealbata 228 

 Wislizenia refracta 176 

 Wyethia amplexicaulis 152, 160, 290 



angustifolia 193 



arizonica 160 



glabra 193 



Wyethia — continued. 



helenioides 193 



helianthoides 160 



mollis 290, 292 



scabra 160 

 Xanthoxylum amerieanum 188 

 Xyloscopa 91 



Yucca 60, 61, 91, 161, 162, 163, 164, 165, 166, 

 167, 168, 174, 204, 277, 286, 301,^317, 

 328, 361 



arborescens 203, 204, 317 



baccata 148, 171, 199, 291 



glauca 189, 291, 299, 363 



macrocarpa 164, 167, 168, 169, 204, 291, 301 



radiosa 148, 163, 164, 165, 167, 168, 169, 170, 

 171, 172, 204, 291, 301, 317 

 Zauschneria californica 193 

 Zea mays 288 

 Zinnia 164, 166, 168, 169 



pumila 148, 168, 171, 172, 175, 30C 

 Zizania 50 



aquatica 110 

 Zizia aurea 130 

 Zostera 59, 61 

 Zygadenus 318, 319 



elegans 226, 234 

 Zygophyllaceae 162 



