208 MALVACEAE 



3. Vltls bicolor Le Conte. Blue or Winter Grape. (Man. p. 614 ; 

 I. F. /. 2401.) In woods, N. Y. to Mich., and N. C. — Pennsylvania: 

 Monroe ; Northampton ; Bucks ; Lancaster ; Dauphin ; Perry ; 

 Allegheny. 



4. VitlB vulpina L. Riverside or Swekt-Scented Grape. (Man. 

 p. 614 ; I. F.y. 2402.) Along rocky river banks, N. S. to Man., Md. and 

 Ark. — Pennsylvania : 



5. Vitls cordifolia Michx. Frost or Chicken Grape. (Man. p. 

 615 ; l.V. f. 2404. ) Moist thickets and along streams, N. Eng. to Neb., 

 Fla and Tex. — Pennsylvania : Northampton ; Bucks ; Delaware ; 

 Chester ; Lancaster ; Luzerne ; Perry ; Franklin ; Allegheny. 



6. Vitls rupestrisScheele'. Sand or Sugar Grape. (Man. p. 615; 

 I. F. /. 2406.) River banks, Pa. to Mo., D. C, Tenn. and Tes.— Penn- 

 sylvania : Lancaster ; Dauphin. 



2. PARTHENOCISSUS Planch. 

 1. Parthenoolssus qulnquefolia (L.) Planch. Virginia Creeper. 

 American Ivy. (Man. p. 616; I. 'P./. 2410.) In woods and thickets, 

 Quebec to Man., Fla., Tex., and Mex. — Pennsylvania : Northampton ; 

 Bucks ; Delaware ; Chester ; Lancaster ; Franklin ; Columbia ; 

 Huntingdon ; Erie ; Allegheny. 



Order 18. MAL VALES. 



Stamens in several groups : anthers 2-celled ; embryo straight. 



Fam. 1. TiLiACEAE. 

 Stamens monadelphous : anthers i-celled : embryo curved. 



Fam. 2. Malvaceae. 



Family i. TILIACEAE Juss. Linden Family. 



1. TILIA L. 



Leaf-blades glabrous, or merely tufted in the vein-axils beneath. 



1. T. Americana. 

 Leaf-blades silvery white-tomentose beneath. 2. T. heterophylla 



1. Tilia Americana L. Bass-wood. American Linden. Whitb- 

 wooD. (Man. p. 617; I. F.y. 241 1.) In rich woods and along river- 

 bottoms, N. B. to Ga., Man., Neb. and Tex. — Pennsylvania: North- 

 ampton ; Luzerne ; Bucks ; Philadelphia ; Chester ; Lancaster ; 

 Erie ; Allegheny. 



2. Tilia heterophylla Vent. White Bass-wood. (Man. p. 617 ; I. 

 F. /. 2413.) In woods N. Y. to Fla., Ala., HI., Ky. and Tenn.— /V««- 

 sylvania : Franklin ; Huntingdon ; Susquehanna. 



Family 2. MALVACEAE Neck. Mallow Family. 

 A. Fruit of several radially disposed carpels which separate from each other 

 at maturity : stamen-column anther-bearing at the summit, 

 a. Carpels i-seeded. 

 Involucels of 6-g bractless. i. Althaea. 



Involucels of 1-3 bractlets or wanting. 



