GENUS PINUS
100 species, (largest genus of the conifers)
three major SUBGENUS:
subgenus Strobus (haploxylon or soft pines, with one fibrovascular bundle in the needle)
subgenus Ducampopinus (Mid way between Strobus and Pinus)
subgenus Pinus (diploxylon or hard pines, with two fibrovascular bundles in the needles)
subgenus STROBUS
(white or soft pines)
(one bundle in the needle)
SUBGENUS STROBUS
SugarPine, EasternWhitePine
subgenus Ducampopinus
Subgenus Ducampopinus:
Pinyon, Lacebark and Foxtail Pines
SUBGENUS Ducampopinus
Lacebark Pine, Pinyon, Foxtail Pines
subgenus PINUS
(yellow or hard pines)
(Two bundles in the needle)
(Evergreen)
SUBGENUS PINUS
YellowPine, PonderosaPine, DiggerPine