106 FAGACEAE 



Family 2. FAGACEAE Drude. Beech Family. 



Staminate aments globose, drooping on slender-bracted peduncles : nuts 3- 



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. PAGUS h. 

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

 F.y: J'2^S-) 1° rich soil, N. S. to Wis., Fla. and Tex. — Pennsylvania: 

 Northampton ; Lancaster ; Huntingdon ; Erie ; Chester ; Mon- 

 roe ; Lackawanna ; Tioga ; Delaware ; Allegheny. 



2. CASTANEA Adans. 



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



Leaf-blades white-tomentose beneath : shrub or small tree. j. C. pumila. 



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

 p. 331; I. F./ /226.) In rich soil, Me. to Mich. a.nAT&ian.— Pennsyl- 

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

 York ; Delaware ; Allegheny. 



2. Castanea pumila (L.) Mill. Chinquapin. (Man. p. 332; I. F./. 

 1227.) In dry soil, N. J. and Pa. to Ind., Fla. and le^.— Pennsylvania : 

 York ; Lancaster ; Chf.ster. 



3. QUBRCUS L. 



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

 pubescent within. 

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

 Leaf-blades pinnatiiid 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. coccinea. 



Leaf-blades pubescent beneath. 



Cup of the acoru turbinate : leaf-blades brown or rusty-pubescent 



beneath. 4. Q. velulina. 



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

 beneath. 

 Large tree : leaves with lanceolate lobes. 5. Q, digilata. 



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. Q. Marylandica. 



