370 Class XXII. Order XIII. 



dentations on the margin of- the leaves. The leaves, as Michaux 

 observes, are covered when young with a white down, which 

 disappears as they grow older. In many instances they are fur- 

 nished with a pair of glands at base. The aments, which are 

 two or three inches long, appear in May. Wood much like the 

 last. Cambridge, Milton. 



POPULUS CANDICANS. Ait. Balm of Gilead Tree. 



Leaves cordate, ovate, acuminate, obtusely and un- 

 equally serrate, whitish and somewhat three nerved 

 beneath ; petioles hairy ; buds resinous ; branches 

 round. 



This poplar is abundantly cultivated in New England, and 

 proves troublesome by the rapidity with which it spreads. I 

 have never seen it in woods. 



MOJVADELPHM. 



431. JUN1PERUS. 



JUNIPERUS VIRGINIANA. Red Cedar, 



Bigelow, Medical Botany, PI. xlv. 



Trunk arboreous, upper leaves imbricated in four 

 rows, ovate, pungently acute. 



The Red Cedar, sometimes called in this vicinity by the name 

 of Savin, is a common tenant of dry, rocky hills. When full 

 grown, it is a middling sized tree. Trunk straight, decreasing 

 rapidly from the ground, and giving off many horizontal branch- 

 es. Its surface is generally unequal and disfigured by knots. 

 The small twigs are covered with minute, densely imbricated 

 leaves, which increase in size as the branch grows, till they are 

 broken up and confounded with the rough bark. These leaves 

 are fleshy, ovate, concave, rigidly acute, marked with a small, 

 depressed gland on the middle of their outer side, in pairs, 

 united at base to each other and to the pairs above and below 

 them. A singular variety sometimes appears in the young shoots, 

 especially those which issue from the base of the trees. This 

 consists in an elongation of the leaves to five or six times their 

 usual length, while they become spreading, acerose, considera- 

 bly remote from each other, and irregular in their insertion, be- 

 ing either opposite or ternate. These shoots are so dissimilar 



