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Pinus monophylla Torr. & Frem. Single-leaf Pinon. 



Range. — From Utah (near Utah Lake) to California (eastern foothills- Sierra 



Nevada Mountains) and southward into eastern Arizona (San Francisco Mountains). 



Names in use. — Pifion (Gal., Ariz., Nev., Utnli); Nut Pine (Cal., 

 Ariz., Nev., Utah) ; Gray Pine (Nev.); Nevada Nut Pine (Gal.); Single- 

 leaf (Gal. lit.); Fremont's Nut Pine (Cal. lit.). 



Pinus balfouriana Murr. Foxtail Pine. 



Range. — California (Scotts Mountain in Siskiyou County; Mount Whitney and 

 sources of King and Kern rivers). 



Names in use. — Spruce Pine (Cal. lit.): Foxtail Pine (Cal.). 

 Pinus aristata Engelm. Bristle-cone Pine. 



Range. — From Colorado through southern Utah, northern Arizona, and Nevada to 

 southeastern California. 



Names in use. — Hickory Pine (Cal. lit.) ; Bristle-cone Pine (Cal. lit.) ; 

 Foxtail Pine (Cal. lit.). 



Pinus resinosa Ait. Red Pine. 



Range. — From Newfoundland and along the northern shores of St. Lawrence Gulf 

 to northern Ontario (north of Ahittihi Lake) to southern Manitoba (near southern 

 end of Lake Winnipeg) ; southward through the Northern States to Massachusetts 

 (Middlesex County), Pennsylvania (Chester County), northeastern Ohio (north of 

 Cleveland), central Michigan (Saginaw), northern Wisconsiu (Oshkosh and Eau 

 Claire), and noYtkeasterri* Minnesota. 



Names in use.— Red Pine (Vt., N. H.,N.Y., Wis., Minn., Ont.); Nor- 

 way Pine (Me., N. H., Vt., Mass., N. Y., Wis., Mich., Minn., Ont.) ; Hard 

 Pine (Wis.); Canadian Red Pine (Eng.). 



Pinus torreyana Parry. Torrey Pine. 



Range. — Southern California (Soledad River in San Diego County). 



Names in use.— Soledad Pine (Cal.); Del Mar Pine (Cal.); Lone 

 Pine (Cal.); Torrey Pine (Cal. lit.); Torrey's Pine. 

 Pinus arizonica Engelm. Arizona Pine. 



Range. — Southern Arizona (Chiricahua, Santa Catalina, El Rincon, and Santa 

 Rita mountains). 



Names in use. — Arizona Yellow Pine (Cal.); Arizona Pine; Arizona 

 5-leaved Lumber Pine (Cal. lit.). 



Pinus ponderosa Laws. Bull Pine. 



Range. — From British Columbia (interior south of latitude 51°), and Dakota 

 (Black Hills region) southward in the Pacific and Rocky Mountain region to west- 

 ern Texas and Mexico. 



Names in use.— Yellow Pine (Cal., Colo., Mont., Idaho, Utah, 

 Wash., Oreg.); Bull Pine (Cal., Wash., Utab, Idaho, Oreg.); Big Pine 

 (Mont.); Long leaved Pine (Utah, Nev.); Red Pine; Pitch Pine; South- 

 ern Yellow Pine; Heavy-wooded Pine (Eng.); Western Pitch Pine; 

 Heavy Pine (Cal.); Foothills Yellow Pine; Sierra Brownbark Pine; 

 Montana Black Pine (Cal. lit.); "Gambier Parry's Pine" (Eng. lit.). 



Pinus ponderosa scopulorum Engelm. Rock Pine. 



Range. — Rocky Mountain region. 



NAMES in use.— Yellow Pine (Mont., Nebr.); Bull Pine (Colo.); 

 Long-leaved Pine (Colo.); Rocky Mountain Yellow Pine (lit.). 



