Family 7. gTAPHYLEACBAE I)Q, Bladdej-nut Family. 



1. STAPHYLEA L. 

 1. Sta^tlea 'trjfolia L. Bladder-nut'. M. p. 606. f tickets in moist 

 soil. Spring, 



Family 8. AOERACEAE St. Hil. Maple Family. 



■ •■ ' ■'" •. -'' ■> 1. ACER L. Maple. ■ . .' 



Leaves simple, palmately lobed. 



u,i- Flowers in den^e, sessile, lateral clusters, unfolding before the leaves. 

 Petals none; ovary tomentose; samaras divergent. 



1. A. saccharinum. 

 ■ 'Petals present; ovary glabrous; samaras incurved. '•'■>< 



2, A. rwbrum. 

 Flowers corymbose, unfolding with the leaves. 



' ' Leaves pale and nearly glabrous beneath. " 3. A. Sacaharum. 



Leaves green and pubescent; at least on the veins beneath. 



4. A. nigrum. 

 Flowers racemed. terminal,, unfolding after the leaves. 

 ' - Racemes drooping;- 'leaves' finely serrate.- 5. A. Pennsyhdnicum. 

 Racemes erect ; , leaves coarsely serrate. 6- A. spicatum. 



Leaves pinnate. 7. A.' Negundo. 



1. Acer, s,accharinum, L-, . White t or Silver Maple. M. p. 607. Common in 



cultivation; also river banks. Eariy spring. 



Delaware — Chad's Ford along Brandywine (B. 8m.). Dauphin — 

 Steelton (Wn.). 



Mercer— Above Trenton along the Delaware (He.). 



New Castle— BrandyWine' Creek above ' Washington street, both north 

 and south side. 



2. Acee r-ubrum L. Bed or Swamp Maple. M. p. 607." Swamps and low 



grounds. Early spring. 



3. Acer saccharum Marsh. Sugar or Bock Maple. M. p. 607. Rich 



woods. Spring. 



Bucks— Argus (Cr.), Sellersville (Fr.), Solebury Twp. (Ws.). Mont- 

 gomery— Sumney town (VP.). Delaware— Valley of iDarby Creek (B. 

 Sin.), phester— PhcenjLxvjlle, Mart. (B.C.). Lancaster— (P.). Lehigh— 

 Lehigh Mountain (Kr.). Northampton— Easton, Porter (B. C). Dau- 

 phin — Harrisburg (Wn.). , ' 



Mercer— Princeton, Trenton (C). 



New Castle — Rockland, Guyancourt. Rare. 



4. Acer nigrum Michx. Black Sugar Maple. M. p. 608. Rich soil. 



Spring. 

 Bucks— Rock Hill (Fr.). Lancaster— Peach Bottom (Ca.). North- 

 ampton — (P.). 



Hunterdon — Locktown ( C. ) . 



5. Acer Pennsylvanioum L. Striped or Goosefoot Maple. M. p. 608. 



Rich, rocky woods. Spring. ; 



Buoks~+ (Pj). Montgomery— Mill Creek (Ha.). Delaware— Painters' 

 Arboretum (He.). Berks— Hamburg (Li.), Blue Ridge (Sfch.). Datd 

 phin— Cold Springs (P.). 



