498 



INDEX. 



Zeugites latif olia, iii. 577. 



mexicana, iii. 577. 



munroana, iii. 577. 



Zexmenia, ii. 171. 



Zexmenia, ii. 175 ; iv. 213, 251. 



Zexmenia aurea, ii. 172. 



brevifolia, ii. 172; iv. 56. 



brevifolia, iv. 141 . 



■ ceanotMfolia, ii. 172. 



costaricensis, ii. 172. 



crocea, ii. 172. 



crocea, iv. 56. 



encelioides, iv. 141. 



fasciculata, ii. 172. 



ghiesbreghtii, ii. 172. 



gnaphalioides, ii. 172. 



grayi, ii. 188. 



greggii, ii. 172. 



helianthoides, ii. 172. 



imbricata, ii. 173. 



lantaniaefolia, ii. 173. 



lindenii, ii. 173. 



longipes, ii. 173. 



— — i macrocephala, ii. 173. 



microcephala, ii. 173. 



monocepbala, ii. 173. 



ovata, ii. 173. 



salmeoides, ii. 191. 



salvinii, ii. 173. 



scandens, ii. 174 ; iv. 56. 



seemannii, ii. 174. 



serrata, ii. 174. 



stenantha, ii. 174 ; iv. 56. 



strigosa, ii. 174. 



tagetiflora, ii. 175. 



texana, ii. 170. 



trachylepis, ii. 175. 



Zexmenia villosa, ii. 175. 



zinnioides, ii.175. 



Zigadenus, iii. 382. 

 ZLNGIBEKE^E, iii. 308. 

 Zinnia, ii. 152. 

 Zinnia, ii. 153 ; iv. 140. 

 Zinnia acerosa, ii. 152 ; iv. 55. 



angustifolia, ii. 153. 



anomala, ii. 153 ; iv. 55. 



bicolor, ii. 153. 



bicuspis, ii. 152. 



elegans, ii. 153. 



. elegans, ii. 154. 



grandiflora, ii. 153. 



intermedia, ii. 153. 



juniperifolia, ii. 153 ; iv. 55. 



leptopoda, ii. 153. 



linearis, ii. 154. 



maritima, ii. 154. 



multiflora, ii. 154. 



paueiflora, ii. 154. 



pumila, ii. 154. 



tenuiflora, ii. 154. 



verticillata, ii. 154. 



Zinowiewia, i. 189. 



Zinowiewia integerrima, i. 189. 



ZIZYPHE^E, i. 195. 



Zizyphus, i. 195. 



Zizyphus, i. 197. 



Zizyphus acuminatus, i. 195. 



guatemalensis, i. 195. 



heteroneurus, i. 195. 



iguanea, iii. 138. 



lycioides, i. 195 ; iv. 22. 



obtusifolius, iv. 22. 



Zobnia, i. 273. 

 Zornia diphylla, i. 273. 



Zornia leevis, i. 273. 



pubescens, i. 273. 



reticulata,!. 273. 



tetraphylla, i. 273. 



tettaphylla, iv. 230. 



• • thymifolia, i. 273. 

 Zostera, iii. 440. 

 ZOYSE^E, iii. 516. 

 Zuckertia cordata, iii. 131. 

 Zuelania Icetioides, i. 469. 

 Zygadenus, iii. 382. 

 Zygadenus, iv. 229, 274. 



mexicanus, iii. 382. 



mexicanus, iv. 295. 



porrifolius, iii. 382. 



volcanicus, iii. 382. 



vuleanicus, iv. 295. 



ZYGOPETALtTM, iii. 251, 



Zygopetalum africanum, iii. 274. 



aromaticum, iii. 251. 



bidentatum, iii. 251. 



burtii, iii. 251. 



cerinum, iii. 251. 



discolor, iii. 251. 



grandiflorum, iii. 251. 



grandiflorum, iv. 301. 



lacteum, iii. 251. 



marginatum, iii. 251. 



moritzii, iii. 252. 



wendlandi, iii. 252. 



ZYGOPHYLLAOE^E, i. 158;|iv. 



17, 97. 

 Zygophyllacece, iv. 175, 205, 214, 216 r 



224. 

 Zygophyllidium biforme, iv. 85. 

 Zygophyllutn'tridentatum, i.|159. 



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