Williamsonia — ^Yucca recurvifolia 



521 



Williamsonia II, 5 

 Williamsoniella II, 5 



— waldensis II, 5 



Wilmottea Brut, et Rose N. G. 278 



— minutiflora Britt. et Rose 275 

 Wintera 68, 409, 854 

 Winteraceae 409 

 Winteranaceae 525 

 Wintereae 409 



Winteria 68 



Wirtgenia malayana 845 



Wistaria sinensis 535 



— venusta 388 

 Withania Holstii 500 

 Wittia panamensis 275 

 Wolffia 191 

 Wolffiella 191 



Woodsia alpina (Bolt.) Gray 5 



— glabella R. Br. 5 



— hyperborea (Ljljebl.) R. Br. 5 

 Woodwardia areolata 4 



— exaltata Nakai* 14 



— virginica 4 

 Wormskioldia lobata 512 

 Wrightia lanata P. II, 267 

 Wullschlaegelia 225 

 Wyetbia amplexicaulis 756 



Xamilenis 68 

 Xantliium 314, 321, 326 



— ecliinatum Murr. 317 



— italicum Moretti 317 

 Xantboceras sorbifolium 481 

 Xantbopbylluni 442 



Xanthoria polycarpa (Ehrh.) Oliv. 23 

 Xantbosia 517 



— Candida Steud. var. subtrilobata 

 Ostenf. 514 



Xantbosoma 146, 149, 850 

 Xantbostemon 421 

 ■ — chrysantbus 421 



— oppositifolius 421 

 Xantboxylum alatum 81 



— Bungei 81 

 Xenopbya 147 

 Xenospbaeria 19 

 Xerantbemum II, 95 

 Xerocblainys 305 



— acuminata Ger. 304 



— arenaria Ger. 304 



Xerocblamys elliptica Ger. 304 



■ — rupestris Ger. 304 



■ — tampoketsensis Ger. 304 



— villosa Ger. 304 

 Xeronema 197 

 Xerotes 110 

 Ximenia elliptica 427 

 Xolisma ligustrina 718 

 Xylaria N. A. II, 336 



— aemulans II, 163 



— anisoj)leura II, 220 



— apiculata II 220 



— Berkeleyi II, 163 



— biformis II, 163 



— composita* II, 163 



— divisa* II, 163 



— bypoxylon (L.) Grev. II, 225 



— moriformis II, 163 



— polymorpba (Fers.) Grev. II, 220, 

 229 



— timorensis* II, 163 

 Xylobium 215 

 Xylocblaena 305 



— Perrieri Ger. 304 



— Ricbardi Bak. 304 

 Xylograpba parallela (Ach.) Fr. II, 



226 

 Xyloma campanulae II, 329 



— solidaginis Fr. II, 302 



— virgaureae DC. II, 302 

 Xylopia 251 



Xylosma 263 

 Xyridaceae 239 

 Xyris Barteri 239 

 Xylotbeca 366 

 Xysmalobium 255 



Yabea 516 



Yoania 223 



Yolanda Hoehne N. 0. 214 



Yucca 101, 198 



— australis 198 



■ — brasiliensis 198 



— breVifolia 193 



— filamentosa media X recurvifolia 

 198 



— flaccida glaucescens 192 



— glauca 756, 758 



— macrocarpa 684 



— recurvifolia 198 



