TILIACE^- 



SILVA OF NORTH AMERICA. 



51 



Tilia (^tXi^pa)^ tlie classical name o£ tlie Linden-tree^ adopted by Toiirnefort" for this genusj was 

 retained by Liunieus. 



attacking Elm-trees in New Jersey. {Garden and Forest, iii. 30, f. 

 6 \ The foliage of Lindens in some American cities is frequently 

 destroyed by Orgyia leucosiigma. The different Tiliis are often 

 injured by the fall Web-worm {Ilyphantria cunea), the Forest Tent- 

 eaterpillar (Clmocampa sylvatica), by an Inch-worm (Ilibemia tilia' 

 rid), and by a Leaf-beetle (Chrysomela scalaris). Tliey are much 

 infested in Europe by the larva of a moth (Ocneria dispar). It has 

 been introduced into the United States, and is abundant at Med- 

 ford, Massachusetts (Bull. Exp. Sta. Mass, Agric, Coll No, 1, 18). 

 Several species of Apliides often occur in large numbers, and seri- 

 ously disfigure the foliage of Linden-trees, and red mites {Tetrany- 

 chus) live on these trees in America and in Europe, where they are 



sometimes so abundant as to '* almost denude the trees of their fo- 

 liage.^' (A, Murray, Economic Entomology y Aptera^ 107-) Lists of 

 the insects infesting Tilia in Europe can be found in Kalicubach^s 

 Die Planzen-Feinde aus der Classe der Insecteji, 70 ; and of those 

 found on these trees in America in A, S- Packard's Insects Injurious 

 to Forest and Shade Trees (Bull 7, U, S. Dept. of Interior, 124). 



^ Lime, previous to about Hie year 1700, appears to have been 

 usually written Line (Line-grove, Shakespeare, Tempest, v. 10), a 

 corruption of Lind which by the suffix en becomes Liiideu or Lin- 

 den-tree» The family name of Linnaeus was derived from that of 



the Lindcn4ree» 



^ Elemens de Boianique, 484, t. 38L 



CONSPECTUS OF THE NORTH AMERICAN SPECIES- 



Stamens united to a petaloid scale. 

 Leaves green on both surfaces 



Leaves glabrous or nearly so ; fruit ovoid 



1. T. Americana, 



Leaves pubescent on 



the under surface; fruit globose 2. T. pubescens, 



Leaves pale on the lower surface ; fruit globose 



3. T. HETEROPIIYLLA. 



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MISSOURI 

 BOTANTCAu 



GARDEN. 



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