INDEX. 



503 



Terminology of aestivation, 181. 



Tertiary arctic forests, 160; vegeta- 

 tion of Greenland, 227. 



Thalictrum clavatum, 39. 



Thalictrum Richard sonii, 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 Constablozi, 65. 

 Vaccinium erythrocarpwn, 45. 

 Vaccinium macrocarpum, 167. 

 Varieties, do they wear out or tend to 

 wear out ? 174. 



Varieties, gender of nam. }< :. 257. 



Vegetable kingdom, history of, dis- 

 cussed, 140. 



Vegetation, aspects oi North Ameri- 

 can, 143, 261. 



Veratrum parviflorwn, 48. 



Vienna, herbarium at, L& 



Wads-worth Oak, 97. 



Walker-Arnot, Qeoig A sketch of, 



347. 



W.nd. Nathaniel Bagshaw, sketch of, 

 349. 



Webb, P. Barker, herbarium of, 16. 



Weed, definition of a, 284. 



Weeds of California, 241 ; 

 North America, 24 J ; origin of Amer- 

 ican, 235; pertinacity and predomi- 

 nance of, L'34. 



Welwitsch, Frederick, sketch of, 



White Pine, the, 107. 



Wight, Robert, sketch of, I 



Wistaria, 154. 



Wright, Charles, sketch of. 468. 



Wyman, Jeffries, sketch of, 377. 



Yew-trees, ancient, 103; of Fouir 

 Abbey, 104. 



Zigadenus glaucus, 49. 



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