ggiO FLOBA OF PHILADELPHIA. 



4. ViTis vuXiPiNA L. Riverside Grape. M. p. 614. Along rocky river- 



banks. Spring. 

 Philadelphia — Wissahickon (Je.). Buds — Nockamixon, New Hope 

 (Ws.). Montgomery— Iyj 'Rock (Ke.). Delaware— Concord, Crura Creek 

 (Fu.). Lancaster— York Haven (Le.). N ortha7npt on — Haston, Porter 

 . (B. C). 



Gloucester— Westville (Wn.). Hunterdon— StoektoTi (C). 



5. ViTis CORDIFOLIA Michx. Frost or Chicken Grape. M. p. 615. Thickets 



and stream banks. Spring. 



6- ViTis RUPESTRis Scheele. Sand Grape. M. p. 615. Eiver banks. 

 Spring. 

 Lancaster— (P.). Dauphin— {P.). 



2. PARTHENOCISSUS Planch. 

 1. Pakthenocissus quinquepolia (L.) Planch. Virgijiia Creeper, American 

 Ivy. M. p. 616. Woods and thickets. Summer. 



Order 18. MAL VALES. 



Stamens in several sets; anthers 2-celled; embryo straight. 



Fam. 1. Tiliaceae. 

 Stamens monadelphous ; anthers 1-celled ; embryo curved. 



Fam. 2. Malvaceae. 



Family 1. TILIACEAE Juss. Linden Family. 

 1. TILIA L. 

 1, TiLiA Americana L. Linden, Bass-wood. M. p. 617. Rich woods and in 

 cultivation. Spring. 



TiLiA EuROPAEA L. European Linden or Lime Tree. Cultivated. 

 Early summer. 



Family 2. MALVACEAE Neck. Mallow Family. 



Stamen-column anther-bearing at the summit. 

 Carpels 1-seeded. 



Involucels of 6-9 bractlets. 1. AUfiaea. 



Involucels of 1-3 bractlets or none. 



Stigmas linear, on the inner side of the style-branches. 



2. Malva. 

 Stigmas capitate, terminal. 3. Sida. 



Carpels 2-several-seeded. 4. Abutilon. 



Stamen-column anther-bearing below the entire or 5-toothed summit. 



Carpels 1-seeded. 5. Eosteletzhya. 



Carpels several-seeded. 6. Hibiscus. 



1. ALTHAEA L. 

 1. Althaea officinalis L. Marsh Mallow. M. p. 618. Cultivated. Sum- 

 mer. 

 PMadeZpMo —Germantown (Je.). Buc1cs—(P.). Delaware— Ijima, 

 roadside (W. Tr.). Lancaster— (P.). 



