400 



INDEX. 



Page. 



Woodsia scopulina, D. C. Eaton 337 



Woodwardia Chamissoi, Brackenridge 328 



radicans, Smith, var. Americana, Hook. 328 



spinnlosa, Martens 328 



"Wycthia amplexicaulis, Nutt . 161 



Arizonica, Gray (PL IX) 1G1 



Xanthium strumarium, L 159 



Xantbocephalum gymnospermoides, Benth, & Hook. 140 



XEROTIDE.2E. 272 



Ximcnesia encelioides, Cav 163 



Yeara 42 



Yerba anti-xheumatica 4C 



de Manaa 49 



Santa 47 



Yucca angnatifolia, Pnruli 270 



Page. 



Yucca baccata, Torr 49,276 



TVhipplei, Torr 376 



Zanschneria Californica, Presl 121, 3G1 



Zieria demissa, (Hornsch.) Schp 346 



Zinnia grandiflora, Nutt 159 



Zizyphua lycioides, Gray, var. canescens, Gray 82 



Zornia 86 



diphylla, Watson 100 



reticulata^ Smith. 100 



Zygadenus elegans, Pursh 271 



chloranthus, Richards 271 



glaucus, Wutt 18,271 



Nuttallii, Gray 271 



ZYGOPHYLLACE.33 79 



