io Flora of the Palouse Region 



the narrow terminal part exceeding the scale. Common in the Thatuna 

 Hills. 



14. ABIES. 



Evergreen trees with linear flat scattered sessile leaves, spread- 

 ing so as to appear two-ranked but in reality spirally arranged, 

 commonly quite persistent in drying: staminate aments axillary: 

 ovule-bearing aments lateral, erect; ovules two on the base of each 

 scale, reflexed; the scale shorter than or exceeding the thin papery 

 bract: cones erect, subcylindrical or ovoid, their orbicular or 

 broader scales deciduous from the persistent axis. 



A- grandis Linrtl. Large tree, sometimes 100 m. tall and 2 m. in diam- 

 eter, with thin, dark gray, rather smooth bark: branches horizontal 

 or the lower drooping: leaves linear, obtuse or notched, shining green above, 

 marked beneath by two white lines, 18-30 mm. long, usually arranged in two 

 ranks, giving the foliage a flattened appearance: cones cylindric-oblong, 7-10 

 cm. long, dark green, more or less covered with drops of resin; scales broader 

 than long, entire: bracts small. Moist places, Thatuna Hills. 



15. PSEUDOTSUGA. 



Very large trees, at first pyramidal and spruce-like, often at last 

 more spreading: leaves flat, somewhat two-ranked by a twist at 

 the base: aments from the axils of the leaves of the preceding year: 

 staminate aments in an oblong or cylindrical column, surrounded 

 or parth - enclosed by numerous, conspicuous, round bud- scales: 

 ovule-bearing aments with the scales much shorter than the broadly 

 linear acutely two-lobed bracts: cones maturing the first year; 

 scales persistent. 



P. uOUglasii Carr. Very large tree, 50-100 m. high, 1-4 m. in diameter: 

 bark thick, reddish within, deeply cracked longitudinally: branches usually 

 short and horizontal: leaves linear, obtusish, 20-30 mm. long, narrowed at the 

 base, dark green above, paler beneath: staminate aments light brown, ob- 

 long-cylindric, 1 cm. long, half enclosed in the large bracts: pistillate 

 aments green or purplish: cones pendent, cyliudric-ovate, 6-10 cm. long, the 

 tridentate bracts conspicuously exceeding the scale. Common on Kamiack 

 Butte and the Thatuna Hills. ' 



16. PICE A. 



Evergreen conical trees, with linear short four-sided leaves, 

 spreading in all directions, falling away from the twig in drying, 

 leaving it covered with small projections: leaf-buds scaly: stam- 

 inate aments axillary, nearly sessile: ovule-bearing aments ter- 

 minal, ovoid or oblong; ovules two on the base of each scale, re- 

 flexed, ripening into two more or less winged seeds: cones ovoid 

 or oblong, obtuse, pendulous; their scales numerous, spirally 

 arranged, thin, obtuse, persistent. 



