5(544 FLORA OF PHILADELPHIA. 



7. Ck)RNUS ALTKRNIFOLIA L. f. M. p. 691. Woods. Early summer. 



Philadelphia— Wissahickon near Thorp 's Lane (Je.), Germantown (Me.), 

 Schuylkill above Philadelphia (Pr.), Belmont Water- works, Old York 

 Road (Te.), Fairmount Park (Wn.). Bucks— Uock Hill (Fr.). Mont- 

 gomery — Schwenksville (Cr.). Delaware — Upper Providence, common, 

 Dr. Geo. Smith (Fu.), Lansdowne (Pe.), Wawa (B. 'Sm.), Concord (W. 

 Tr.), Chester, Valley Forge (Le.). Lancaster— (F.). Lehigh— Lianrj 'a 

 (Kr.). Northampton— (P.). Daup Mn— Harrisburg, Steelton (Wn.). 



Burlington — Pemherton (C). Cawden — Kirkwood (C), Magnolia 

 (Ha.). Gloucester— ^ ear Mickleton (He.), Mantua (Ja.), Swedesboro 

 (Li,). SaZem— Woodstown (Wa.) 



New Castle— Ahove Rockland, common. 



CoRNUS MASCULA Dur. Introduced. Spring. 

 Philadelphia— YiaTiram's Garden (Ja.) (Ke.). 



2. NYSSA L. 

 1. Nyssa sylvatica Marsh. Tupelo, Pepperidge, Blacl or Sour Gum. M. 

 p. 691. Rich soil. Spring. 



Series 2. GAMOPETALAE. 



Order 1. ERIC ALES. 



Stamens free from the corolla, or merely adnate to its base, not united into 

 a tube. 

 Ovary superior; fruit a capsule, or rarely drupaceous. 

 Corolla essentially polypetalous. 



Ovary 3-celled ; shrubs ; leaves deciduous. 



Fam. 1. Clethraceae. 

 Ovary 4-,5-celled ; low, mostly evergreen perennials. 



Fam. 2. Pyrolaceae. 

 Corolla distinctly gamopetalous (except in Monotrops and Hypop- 

 itys). 

 Herbaceous saprophytes without green leaves. 



Fam. .3. M onotropaceae. 

 Shrubs with normal, often evergreen leaves. 



Fam. 4. Ericaceae. 

 Ovary inferior, adnate to the calyx, forming a many-seeded berry or 

 drupe in fruit. Fam. 5. Vacciniaceae. 



Stamens borne at the sinuses of the corolla. Fam. 6. Diapensiaceae. 



Family 1. CLETHRACEAE Klotsch. White Alder Family. 



1. CLETHRA L. 



1. CI.ETHRA alnifolia L. White Alder, Sweet Pepperbush. M. p. 692. 



Wet copses. Summer. 



Philadelphia — ByheTT J, Mart. (B. C). Bucks — Tullytown (Cr.) 



(Mac), Buckingham Valley (Ws.), Penn Valley (Wn.). Delaware— 



Tinicum, Ridley, H. C. Barker (B. C). Chester— (P.). Northampton— 



(P.). 

 New Jersey — Common. 

 New Castle — Frequent. 



