: OF ‘GARDENING. 
| x Genera and their Authors—continued. 
= Xiphidi Aublet. 
-= Xylobium, Lindley. 
. Xylomelum, Smith. 
Linn:zus. 
Xylopia, 1 
vul Xponomente, Latreille. 
Yucca, Linnæus. 
Zacintha, Gartner. 
Zalacca, Reinwardt. 
Zaluzania, Persoon. 
Zaluzianskia, J. W. Schmidt. 
Zamia, Linneus. 
Zamioculeas, Schott. 
Zannichellia, Linnzus. 
Zanthoxylum, Linnzus. 
Zauschneria, Presl. 
Zea, Linnzus. 
Zebrina, Schnitzlein. 
Zehneria, Endlicher. 
Zenobia, Don. 
Zephyranthes, Herbert. | 
Zeuxina, Lindley. 
Zeuzera, Latrielle. 
Zexmenia, Llave and Lexarza. 
Zieria, Smith. 
Zilla, Forskahl. 
Zingiber, Adanson. 
‘Zinnia, Linnzus. 
Zizania, Linnszus. 
Ziziphora, Linnsus. 
Zizyphus, Jussieu. 
Zomiearpa, Schott. 
Zomicarpella, N. E. Brown. 
Zornia, Gmelin. 
Zostera, Linn:zus. 
Zosterostylis, Blume. 
Zygadenus, Michaux. 
Zygopetalum, Hooker. 
Zygophyllum, Linnzus. 
Zygostates, Lindley. 
