JUNIRERUS PINACE Au 783 
* Leaves notin sheaths, mostly entire: flowers on last years bran- 
chlets: cones maturing the first year. 
+ Branchlets smooth, the leaf-scars not raised. 
++ Leaves in fascicles at the ends of small branchlete, deciduous. 
6 Larix Cones pendant at the ends of short branchlets, with thin persis- 
tent scale: seeds without resin vesicles. 
++ ++ Leaves solitary and scattered along the branchlets, persistent. 
7 Abies Leaves sessile, leaving circular scars: cones erect, their scales 
and bracts deciduous from the central axis: seeds with resin vesicles. 
8 Pseudotsuga Leaves petioled, the scars transversely oval: cones pen- 
dulous, their scales and bracts persistent on the central axis: seeds 
without resin vesicles. : 
+ + Branchlets rough from the prominent persistent leaf-bases: 
cones pendulous, their scales and bracts persistent on the central axis. 
9 Tsuga Leaves petioled, with a single dorsal duct: seeds with resin 
vesicles. 
10 Picea Leaves sessile, keeled on both sides, with 2 lateral complete or 
incomplete ducts: seeds without resin vesicles. 
* * Cones maturing in the second year their bracts becoming 
corky and thickened: leaves of the perfect plant in bundles of I-5, 
from the axil of scarious bracts, their bases surrounded by a sheath of 
scabrous bud-scales, usually serrulate. 
11 Pinus Leaves needle-shape, the resin-ducts inconstant in number 
and variously placed. - 
Tribe 1, Cupressinex. Cupressinex and Juniperex Endl. Syn. 
Conif. 6. Leaves decussately opposite or ternate, often dimorphous, 
usually scale-like and mostly adnate, the earlier ones free and subu- 
late: leaf-buds not scaly. Anther-cells 2-8, introrse on the lower 
part of the face of the peltate connective-scale.. Pollen-grains sim- 
ple. Scales of the fertile aments few, decussately opposite, apparently 
single, becoming a small cone or connate into a drupe-like fruit. 
Ovules erect, solitary or rarely 2 to each scale. Cotyledons usually 2. 
1 JUNIPERUS L. Sp. 1038. 
Shrubs or trees with opposite or verticillate subulate or scale- 
like sessile evergreen leaves, usually of 2 kinds, and dioecious 
or sometimes monoecious small globose axillary or terminal 
aments. Staminate aments oblong or ovoid. Anther-cells 4-8 
under each shield-shaped scale. Fertile aments of 2 or 3 series of 
fleshy scales, with 2 erect ovules to each scale, in fruit becoming 
united into a blue-black or reddish drupe, ripening the second 
season. Seeds 1-12, ovate, bony. 
§ 1 Oxyceprus Spach Ann. Sc. Nat. 2nd. Ser. xvi, 289. 
Leaves ternate, free and jointed at the base, linear-subulate, 
pungent, channelled and white-glaucous above, not glandular- 
pitted. . 
J. communis L. Sp. 1040. A low tree or erect shrub 1-25 feet high: 
with shreddy bark, the branches spreading or drooping: leaves all subulate, 
rigid, spreading or some of the lower reflexed, mostly straight, verticillate 
