THE DUNES AND THEIR PLANTS 



139 



Fig. 136. — Leaves and acorns of the oaks: a, red oak (Qucrcus rubra); b, 

 pin or swamp oak (Q. paluslris); c, northern pin oak {Q. ellipsoidal is); d, scarlet oak 

 {Q. coccinca); c, black oak {Q. vclutina); f, white oak (Q. alba); g, bur oak 

 {Q. macrocarpa); h, blackjack (Q. marylandica); i, swamp white oak {Q. bicolor); 

 j, cinquapin oak (Q. Milhlenbergii); k, shingle oak {Q. imbricaria) ; /, basket oak 

 {Q. Michauxii). 



