INDEX. 



589 



Ware, William Robert, election of, 

 507. 



Wigandia urens, Cham., 438. 



Wimmeria concolor, Cham. & 

 Schlecht. ?, 403. 



Wood, Horatio C, election of, 

 507. 



Wood, on the behavior of sound and 

 decayed, at high tempera- 

 tures, 482. 

 on the minimum point of igni- 

 tion of decayed, 482. 

 on the decomposition of, at high 

 temperatures, 488. 



Woodsia mollis, J. Smith, 465. 



Ximenia parviflora, Benth., 403. 

 Xyris ?, 458. 



Z. 



Zephyranthes pallida, Roem., 457. 

 Zexmenia aurea, Benth., 426. 



Greggii, Gray, 426. 



podocephala, Gray, 425. 



Tequilana, 425. 

 Zinnia angustifolia, HBK., 423. 



maritima, HBK., 423. 



Palmeri, Gray, 423. 

 Zornia diphylla, Pers., 406. 

 Zygophyllaceae, 306. 



