FLORA 



Phylum STROBILOPHYTA 



Class PINOIDEAE. 



CONIFERALES. 

 The conifers. 



Leaves in clusters surrounded by a sheath at the base, mature cones 

 woody. Pinus. 



Leaves not in clusters, scale-like, mature cones berry-like. Juniperus. 



ABIETACEAE. 

 Pinus 31. 



1. Pinus ponderosa var. scopulorum Engelm. Yellow or Bull Pine. 



Pinus scopulorum (Engelm.) Lemmon. 

 This is our only native pine. It forms the bulk of the woods in the 

 northwestern part of the state. — Banner County; Belmont; Cheyenne 

 County; Custer County; Fort Robinson; Greeley County; Sidney; 

 Valley County. 



JUNIPERACEAE. 

 Juniperus 36. 



Shrubs; leaves all subulate; aments axillary. 1. J. communis. 



Trees; some of the leaves scale-like; aments terminal. 



Berry 1-4 seeded, ripening the first season. 2. J. virginiana. 



Berry usually 2-seeded, ripening the second season; foliage glaucous. 



3. J. scopulorum. 



1. Juniperus communis L. Common Juniper. 

 A xerophytic shrub of the western part of the state. — Belmont; Hat 

 Creek Basin; Harrison. 



2. Juniperus virginiana L. Common Red Cedar. 

 Sabina virginiana (L.) Antoine. 



Common along streams in the eastern part of the state. Often planted 

 for wind-breaks or as an ornamental tree. Anselmo; Franklin; Fre- 

 mont; Long Pine. 



3. Juniperus scorpulorum Sarg. Western Red Cedar. 

 Sabina scopulorum (Sarg.) Rydb. 



Along streams and in canons in the western part of the state. A 

 handsomer tree and less aifected by the cedar apple than the common 

 red cedar, thus a more desirable tree to plant. 



