9AS MONOliClA. POITAKDUIA. 



ly pubescent, but not tomentose, nerves very prominent; 

 length 15 to 20 lines, breadtii 10 to 12 lines; with the fruit 

 J am unacquainted, it appears to be entirely a southern 

 species, and probably more perfect in Georgia. C. nana 

 of Muhl. Catal. arul Herb, appears to be little more than 

 a dwarf variety of C, vesca. 



The original species, C. vesca,or common Chesnut, and 

 the only one of the genus except the above, is indigenous 

 to the south of Europe, where sometimes by an acciden- 

 tal union of stems it presents the most enormous trunk of 

 any existhig vegetable, on Mount^tna there did or does 

 still exist one of these vegetable monsters 160 feet in 

 circumference. 



r55. BETULA. L. (Birch Tree.) 



Masc. Jlmtni imbricated, scales peltate, 5- 

 flowered. Calix consisting of scales. Corolla 

 none. Stamina 10 to 12. Fem. Calio? scales 2« 

 flowered. Coro^'anone. ^eed 1, alated. 



Trees or more rarely shrubs; aments axillary; leaves 

 ovate and serrate, more rarely obovate as in Alnus^ from 

 which this genus is scarcely distinct. — Bark often tena- 

 ccous, with papyraceous exfoliations. 



Species. 1. B. populifolia. Leaves deltoid, acuminate^ 

 2. exceha. 3. nigra. 4. papyracea. (Canoe Birch.) Bark 

 very tenaceous and durable, employed by the savages for 

 various economical purposes, but more paiticularly for 

 canoes. Hab . From Canada to Pennsylvania. 5. lenta. 

 (Sweet Birch.) The taste and seen; of the bark similar to 

 that of GauUheria procumbenS' 6. pumila. 7. glanduloaa . 

 9- nana. 



A genus of about 17 species, the remainder indigenous 

 to northern Europe or Siberia, excepting one species in 

 Japan, and another in Terra del Fuego. 



fSe, CARPINUS. L. (Horn-beam Tree.) 



•Swieniimbricated. Masc. Scales of the cc/ia' 

 ciliated, ^iamijia about 10. Fem. Ca/iai scales 

 3.flowered. Corolla trifid. JS'"ut ovate, sulcate. 



Trees with axillary and terminal aments; female ament 

 at length racemose and foliaceous, flowers conjugate. 



Species. 1. C. cwjericana.— Sty lei, stigmgs 2. Female 

 buds producing both leaves and flo\ycrs. 



