INDEX. 



503 



Terminology of aestivation, 181. 



Tertiary arctic forests, 160 ; vegeta- 

 tion of Greenland, 227. 



Thalictrum clavatum, 39. 



Thalictrum Richardsonii, 39. 



Tilia heterophylla, 37. 



Torrey, John, sketch of, 359. 



Torrey and Gray's Flora, 249. 



Torreya, distribution of, 149 ; geneal- 

 ogy of, 161 ; pilgrimage to, 189. 



Tortworth, the Chestnut of, 94. 



Trautvetteria palmata, 44. 



Trees, absence of, from the pampas, 

 263 ; manner of determining their 

 age discussed, 84 ; manner of growth 

 of, described, 80 ; of Canada and 

 Great Britain contrasted, 266; the 

 longevity of, 71. 



Troglodytes Gorilla, Wyman's paper 

 on, 386. 



Trons, the Sycamore-Maple of, 89. 



Trumbull, J. H., letter on the Jerusa- 

 lem Artichoke, 198. 



Tuckerman, Edward, sketch of, 491. 



Vaccinium Constablcei, 65. 

 Vaccinium erytkrocarpum, 45. 

 Vaccinium macrocarpum, 167. 

 Varieties, do they wear out or tend to 

 wear out ? 174. 



Varieties, gender of names of, 257. 



Vegetable kingdom, history of, dis- 

 cussed, 140. 



Vegetation, aspects of North Ameri- 

 can, 143, 261. 



Veratrum parviflorum, 48. 



Vienna, herbarium at, 18. 



Wadsworth Oak, 97. 



Walker- Arnot, George A., sketch of, 

 347. 



Ward, Nathaniel Bagshaw, sketch of, 

 349. 



Webb, P. Barker, herbarium of, 16. 



Weed, definition of a, 234. 



Weeds of California, 241 ; of eastern 

 North America, 241 ; origin of Amer- 

 ican, 235 ; pertinacity and predomi- 

 nance of, 234. 



Welwitsch, Frederick, sketch of, 358. 



White Pine, the, 107. 



Wight, Robert, sketch of, 356. 



Wistaria, 154. 



Wright, Charles, sketch of, 468. 



Wyman, Jeffries, sketch of, 377. 



Yew-trees, ancient, 103 ; of Fountains' 

 Abbey, 104. 



Zigadenus glaucus, 49. 



