.S PINACEAE. 



Alt. 5ooo-io,(XX) ft. — Mountains, Veta Pass; Mancos; Ouray; Minnehaha; 

 Georgetown ; Horsetooth Mountain. 



3. Pinus Murrayana Oreg. Com. Lodge Pole Pine, Black Pine. Hills 

 and mountains from Mont, to Alaska, Colo, and Calif. — Alt. 5000-10,000 ft.^ 

 Mountains near Veta Pass; Pallas and Sydney; Dillon; Mount Ouray; 

 Breckenridge; Cipango; Baxter's ranch; North Park; Como. 



2. CARYOPITYS Small. Pinons, Nut Pines. 



Cones about 3 cm.; leaves usually in pairs, seldom in threes, i. C. edulis. 

 Cones 4-5 cm. ; leaves singly or rarely in pairs. 2. C. monophylla. 



1. Caryopitys edulis (Engelm.) Small. (Pinus edulis Engelm.) Dry foot- 

 hills and table-lands from southern Wyo. to western Texas, northern Mex., 

 Ariz, and Utah. — Alt. 4000-9000 ft. — Glen Eyrie; Cedar Creek; Red Rock 

 Canon ; Mancos ; Salida ; Florence ; Manitou ; Buena Vista ; Grand Junction. 



2. Caryopitys monophylla (Torr. and Frem.) Rydb. (Pinus monophylla 

 Torr. and Frem.) Dry hills and mountain slopes from Utah to Calif, Lower 

 California and Ariz. One specimen from Colorado seems to belong here. — 

 Manitou. 



3. APINUS Necker. Cembra Pines. 



1. Apinus flexilis (James) Rydb. (Pinus flexilis James) Rocky Moun- 

 tain White Pine. Mountains from Alb. to western Texas and southern 

 Calif. — Alt. 7500-11,000 ft. — Clear Creek, Middle Park; Ojo; Graham's Park; 

 North Park ; Minnehaha ; Beaver Creek ; Chambers Lake ; Manitou. 



4. PICEA Link. Spruces. 



Branchlets pubescent; cones 3-5 cm. long. i. P. Engelmannii. 



Branchlets glabrous ; cones 5-9 cm. long. 2. P. Parryana. 



1. Picea Engelmanni (Parry) Engelm. Engelm ann Spruce, White 

 Spruce. Mountains, especially on the north sides, from Alb. to B. C, Ore., 

 Ariz, and N. M. — Alt. 8500-12,500 ft. — ^Empire; Buffalo Pass, Park Range; 

 Mount Baldy ; Wahat03'a Caiion ; Bob Creek, La Plata Mountains ; Grand 

 Lake; Cameron Pass. 



2. Picea Parryana (Andree) Sarg. (Picea pungens Engelm.) Blue 

 Spruce, Colorado Spruce. Mountains especially along streams from Wyo. to 

 Utah and N. M. — Alt. 6500-10,000 ft. — Empire; near Pagosa Peak; Crystal 

 Park; Wahatoya Canon; Cameron Pass. 



5. PSEUDOTSUGA Cam Douglas Spruce, Red Fir. 



I. Pseudotsuga mucronata (Raf.) Sudw. Douglas Spruce, Red Fir. Hills 

 and mountains from Alb. to B. C, Calif., northern Mexico and western Texas. 

 — Alt. 6000-11,500 ft. — Pagosa Peak; South Cheyenne Caiion; Colorado 

 Springs; Como; State Bridge, Grand River; Boulder; Manitou; Minnehaha; 

 Mancos ; Placer ; hills about Ouray ; Cameron Pass ; Pingree Hill ; Stove 

 Prairie. 



