Ill 



Key to the Wild and Cultivated Trees and 

 Shrubs in Autumn 



1 a Leaves about % in. or less broad, often evergreen .... 2 

 b Leaves more than % in. broad 20 



2 a Leaves scale-like, more or less appressed to the stem, 



the tips sometimes spreading 3 



b Leaves awl-shaped, linear, or needle-like 8 



3 a Low shrubs usually 2 ft. or less high 4 



b Shrubs or trees 3 ft. or more high 5 



4 a Cultivated shrub ; leaves in 4 rows on the stem 



Calluna. p 795 

 b Native shrubs; leaves not in 4 rows on the stem 



Hudsonia. p 186 



5 a Leaves alternate, usually in 2 rows on the stem; 



branches often plume-like Tamarix. p 186 



b Leaves opposite, usually in 4 rows on the stem 6 



6 a Branchlets appear more or less 4-sided, not flattened 



laterally; all leaves more or less keeled 



Juniperus virginiana. p 109 

 b Branchlets appear much flattened laterally, 2 rows of 



leaves flat, 2 rows keeled 7 



7 a Branchlets about Vs in. broad Thuja, p log 



b Branchlets about Me in. broad, or the tips of leaves 



spreading Charnaecyparis. p IOQ 



8 a Leaves in clusters on the stem 9 



b Leaves attached singly to the stem n 



9 a Leaves 2-5 in a cluster Pinus. p 107 



b Leaves 10 or more in a cluster 10 



10 a Leaves deciduous, borne on short, bud-like branches 



Larix. p 108 

 b Leaves evergreen, not borne on bud-like branches 



Cedrus. p 108 



11 a Leaves 3-6 in. long, in whorls at the ends of the branches 



Sciadopitys. p IOQ 

 b Leaves 2 in. or less long 12 



5 65 



