Trees, Shrubs and Vines 



79. Leather-floTwer. (Clematis viorna.) 



Leaf : pinnate (upper occasionally simple), opposite ; leaflets, 

 3-7, entire or 2-3-lobecl, ovate-lance-shaped or oblong, base occa-. 

 sionally slightly cordate. Flower : purple, large, single (nor^^ 

 corolla, sepals 4, l' long, very thick and leathery, more or less, 

 grown together, pointed at apex, many stamens) ; May-Augustv 

 Pennsylvania, Ohio, and south ; climbing, herbaceous, stalk a littfe- 

 grooved and ridged, (n. VII.) 



80.' Common Cinque-foil. Five-finger. (Potentilla' 

 canadensis.) 



Lraf : palmate ; leaflets, 5, I'-z', obovate, base wedge-shaped,, 

 coarsely serrate toward apex. Flower : yellow (petals 5, 

 roundish, stamens numerous), single. April-July ; plant silky- 

 hairy, often trailing, herbaceous. (PI. VII.) 



81. Wild Strawberries. (Fragaria vesca, virginiana, and ■ 

 indica.) 



Leap : trifoliate, clustered, radical, i.e., from the ground ;'■ leaf; 

 lets, i'-2' long, obovate, base wedge-shaped, coarsely serrate, 

 stipules growing to base of Icsf -stem. Flower: white (petals jj 

 separate, roundish, stamens many), single on stem from ground; 

 in spring ; with leafless runners ; in 2 species : — vesea, with calyx 

 spreading OT rejlexeil after blossoming, and the small seed-cases 

 ott the surface of a roundeil or conical receptacle ; yirginianai 

 calyx erect after flowering, seed-cases sunk into, pits on roundish 

 receptacle. Another species {indica), introduced, and locally 

 spontaneous near Philadelphia, has the runners leafy, petals yel; 

 low, leafy bracts larger than sepals below calyx, fruit Usteless. 



82. Running Buffalo Clover. (Trifolium stolonlferum.) 



Leaf': trifoliate; leaflets, broad-obovate or reverse. hearts 

 shaped, finely serrate ; long running stems. Flower' : 'ptB>* 

 plish-white, in "heads" (like other clover), but not densel/ 



flowered. Ohio, Illinois, and soHth ; trailing, herbaceous. 



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