8 NEW SYLVA 



pies, Larch &c, 2. Early leaves of short dura- 

 tion as in Pavias, Prunus &c. 3. Late leaves 

 of long duration, as in Ash trees, Oaks, Ches- 

 nuts <J*c, 4. Late leaves of short duration, as in 

 Catalpa, Liriodendron &c ; but the exact times 

 vary by 2 months from Canada to Florida, and 

 in Florida many deciduous trees become nearly 

 evergreens 



The floration is either early or late vernal as 

 in most species, before the leaves or with them 

 Early or Late estival ; but fe\v are serotine or 

 autumnal as Hamamelis. /The few hyemal 

 trees may be deemed very early vernal. The 

 duration of these flowers is seldom larger than 

 half a lunation, some only last a week or a 

 few days; whence they must be watched. Se- 

 mination is more lasting, as seeds succeed the 

 flowers, and are often a long while ripening ; 

 in some they even last on the trees and shrubs 

 over the Winter. 



The majority of our Northern trees and 

 shrubs belong to the Amentaceous tribe, the 

 Conifers, Rosacea and Senticose, Pomacea, 

 Bicornes, Viburnides, Hederacea &,c. As we 

 advance South j we meet a great variety of 

 Rhamnides,Fraxinides, Magnolides, Ribesides, 

 Akerides, Vitides, Uhnides, Cistides, Araliacea, 

 Terebinthides, Lonicerides &c, while when we 

 reach Florida and Texas, several other natural 

 families appear, the Rubiacea, Cactides, Lau- 

 rinia, Eleagnides. with the palms and yucas of 

 the Endogenous series. There also gradually 

 appear the fruticose Malvacea, Leguminose, 

 Saxifragides, Labiate, Hypericina 4c which 

 are either unknown or rare towards the north 

 or even the middle regions of North America. 



Few kinds of trees and shrubs are found in 



