Bui. 179, U. S. Dept. of Agriculture. 



Plate IX. 



Stones of the Native American Species of Prunus.— II. 



Figs. 1 to 7. — Prunus nigra: 1 and 2, From a wild tree near Atlanta, Mich. ; 3, from Piscataquis River, 

 Me.; 4, Cheney variety; 5, 6, and 7, Aitkin. Figs. 8 to 15. — Prunus subcordata: 8, From a wild tree, 

 Warner Mountains, Cal.; 9, from Klamath Indian Reservation, Oreg.; 10, from Pine Grove, 

 Klamath County, Oreg.; 11, from Swan Lake Valley, Klamath County, Oreg.; 12, from Klamath 

 Falls, Oreg.; 13 and 14, from Sprague River, Oreg.; 15, from Klamath Indian Reservation, Oreg. 

 (Natural size.) 



