106 FAGACEAE 



Family 2. FAGACEAE Drude. Beech Family. 



Staminate aments globose, drooping on slender-bracted peduncles : nuts .^- 



angled or 3 winged. i. Fagus. 



Staminate aments elongated, slender. 

 Staminate aments erect or ascending : nuts 1-3, included in a very spiny in- 

 volucre. 2. Castanea. 

 Staminate aments drooping: nut seated in or rarely surrounded by an in- 

 volucre of imbricated scales. 3. Quercus. 



1. FAGUS L. 

 1. Fagus Americana Sweet. American Beech. (Man. p. 331 ; I. 

 F.yi ^22^.) lu rich soil, N. S. to Wis., Fla. and Tex. — Pennsylvania : 

 Northampton ; Lancaster ; Huntingdon ; Erie ; Chester ; iVION- 

 roe ; Lackawanna ; Tioga ; Delaware ; ALLEGHEN\^ 



2. CASTANEA Adans. 

 Leaf-blades glabrous : large forest tree. i. C. dentata. 



Leaf-blades while-tomentose beneath : shrub or small tree. 2. C. putnila. 



1. Castanea dentata (Marsh.) Borkh. American ChestnuT. (Man. 

 P- 331 ; I- ^-f- 1226.) In rich soil, Me. to Mich, and '^^nw.— Pennsyl- 

 vania : Northampton ; Monroe ; Chester ; Lancaster ; Franklin ; 

 York ; Delaware ; Allegheny. 



2. Castanea pumila (L. ) Mill. Chinquapin. (Man. p. 332; I. V.J. 

 T22j.^ In dry soil, N. J. and Pa. to Ind., Fla. and Tex. — Pennsylvania : 

 York ; Lancaster ; Chester. 



3. QUERCUS L. 



A. Leaf-blades or their lobes bristle-tipped : styles elongated : nuts often 

 pubescent within. 

 a. Leaf-blades pinnatifid or pinnately lobed or dilated near the apex. 

 Leaf-blades pinnatifid or pinnately lobed. 



Leaf-blades green and glabrous on both sides. 

 Cup of the acorn saucer-shaped. 

 Cup over 18 mm. wide. i- Q- rubra. 



Cup less than 18 mm. wide. 2. Q. palustris. 



Cup of the acorn turbinate. 3. Q. coccuiea. 



Leaf-blades pubescent beneath. 



Cup of the acorn turbinate : leaf-blades brown or rustj'-pubescent 



beneath. 4. O. vein Una. 



Cup of the acorn saucer-shaped : leaf-blades gray- or white-pubescent 

 beneath. 

 Large tree : leaves with lanceolate lobes. 5. Q. diffitala. 



Shrub or small tree : leaves with triangular lobes. 



6. O. nana. 

 Leaf-blades dilated near the apex. 



Cup of the acorn saucer-shaped : leaf-blades spatulate, glabrous. 



7. Q. nigra. 



Cup of the acorn hemispheric : leaf-blades obovate, brown-tomentose 

 beneath. 8. O. Marylandica. 



