Pinaceae Pseudotsuga Menziesii Douglas-ﬁr

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Pinaceae Pseudotsuga menziesii Douglas-fir Sight ID characteristics • Leaves linear, grooved above, 2-stomatal bands below, spirally arranged and many ranked • Seed cones pendant, with exserted, 3-lobed bract var. menziesii • Pacific slope • 250!+ tall at maturity • Leaves yellowish-green • Seed cones 2.5”-4” long, 3-lobed bract appressed to cone and pointing towards cone apex var. glauca • Rocky mountains • 130! tall at maturity • Leaves blueish-green • Seed cones 1.5”-2.75” long, 3-lobed bract reflexed and pointing away from cone axis 53 NOTES AND SKETCHES 54 Pinaceae Tsuga heterophylla western hemlock Sight ID characteristics • Linear leaves of varying length, appear distichous • Leaves roughly equal width for entire length • Leaves with 2 diffuse stomatal bands below • Seed cones sessile, scales with wavy margins 55 NOTES AND SKETCHES 56 Pinaceae Tsuga canadensis eastern hemlock Sight ID characteristics • Linear leaves of varying length, appear distichous • Leaves taper +/- evenly from base to apex • Leaves with 2 distinct stomatal bands below • Seed cones stalked, scales with entire margins 57 NOTES AND SKETCHES 58 Pinaceae Tsuga mertensiana mountain hemlock Sight ID characteristics • Linear leaves blueish-green, stomata on all surfaces, spirally arranged and many ranked • Seed cones larger, cone scales reflexed when dry 59 NOTES AND SKETCHES 60 Pinaceae Larix occidentalis western larch Sight ID characteristics • Acicular leaves deciduous, spirally arranged on short shoots, lustrous green • Seed cones erect, bracts shouldered and exserted 61 NOTES AND SKETCHES 62 Pinaceae Larix laricina tamarack Sight ID characteristics • Acicular leaves deciduous, spirally arranged on short shoots, blueish-green, lustrous • Seed cones small – "” – #” long – erect, bracts only visible at base of cone 63 NOTES AND SKETCHES 64 Pinaceae Larix lyallii subalpine larch Sight ID characteristics • Acicular leaves deciduous, spirally arranged on short shoots, blueish-green • Tomentose young branches • Seed cones erect, bracts 3-toothed and exserted 65 NOTES AND SKETCHES 66.

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