Abstract
1. The scalelike leaves of alligator, one-seed Rocky Mountain, and Utah junipers collected in Arizona are generally similar in structure but vary in structural details. 2. The leaves are characterized by (a) a heavily cuticularized epidermis with crystalline inclusions on exposed surfaces, (b) a multiple epidermis including compact layers or bands of fiber-like cells on the abaxial side, (c) sunken stomata, generally in protected areas, (d) mesophyll divided into palisade and spongy parenchyma, (e) a single resin gland near the leaf base in the mesophyll on the abaxial side, (f) a vascular system with transfusion tissue around the vascular bundle and, occasionally, a cap of fiber cells over the phloem. 3. One-seed and alligator junipers usually represent the extremes in variations of these characteristics. Utah juniper is usually intermediate between these two species, with Rocky Mountain juniper usually being similar to alligator juniper.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
