242 



UNITED STATES, 



months.* It must be remarked, that when fructi« 

 fication is annual, it always remains ajcillaiy^ while 

 in the species where it is liiennial, it is so during the 

 first year only ; but during the second^ and when the 

 leaves fall, it is necessaiily isolated. Ciusius has 

 made the remark concerning the quercus cems^ 

 Linn, whose fructification is biennial; we must ex- 

 cept those, the fructification of which, although bi- 

 ennial, always remain axillary, because the leaves 

 do not fall, such^as the quercus cocci/era^ Linn, and 

 the q. virens, or live oak. I will also observe that 

 in the old continent, there are to be found oaks of 

 biennial fructification, such are the quercus cerris, 

 q. segylops, q. coccifera, Linn. q. pseudosuber, 

 i)esf. Sec. 



The species and varieties which Mr. Michaux 

 describes are twenty-nine, and the arrangement of 

 them he has made out in the following manner, ta 

 wit : 



Methodical disjiosition of American oaks. 

 Section J. 



Oak, full grown plants without bristles at the sum- 

 mits of the leaves, acorns peclunculuted, annual fruc- 

 tification. (The 6th species biennial.) 



* To the above remarks it may be added, that the timber of the 

 different species of oak, which complete their fructification in one 

 year, is of a much better quality than those which require eighteen 

 liionths to ripen their acorns. A remarkable exception, however^ is 

 to be made in the case of the durable live oak of the southern states. 

 Note by Michaux^ jun» 



