786 PINACE^ ■ ^panpiA 



ches, linear leaves and monoeeious flowers. Aments terminal 

 and axillary upon young shoots, ,of rather numerous spirally 

 arranged scales. Stamihate flowers small, invplucrate with scale- 

 like leaves, with 3-5 anthers under each subpeltate scale. Pollen 

 grains simple. Fertile ameijts oblong-ovate, erect, with 3-7 in- 

 verted pyules at the base of each scale. Cpne§ maturing the 

 second year, woody, oval, the scales div«rgeiit at right angles 

 from the axis, thick and wedge-shaped with a rhomboidal rugose 

 umbilicate ap6i, setaceous-mucronate. Seeds compressed, oblong-! 

 ofeovate, with thick sprfeadihg margins; Cotyledons 4-6. 



S. ^imperrlrens Endl. Syn. Conif. 198. Erect evergreen trees 100-350 

 feet high by 4-20 feet in diameter, with tliipk fibrous spongy bark, com- 

 paratively short spreading branches and linear 2-ninked leaves: leaves 

 bright green above, glaucous beneath, spreading distichously, those of 

 the main branches appressed, acute, or acuminate and mostly pungent, 

 6-12 linert long, about 1 linb wide: staminate aments about 2 lines long: 

 cones oblopg, 9-12 lines long by 6 lines thick, of about 20 scales: seeds 

 brown, 2-2>i^ lines long. Near the coast, extreme southern Oregon and 

 Calif c»nia. 



Tribe S Ah'ietinex Endl. Syn. Conif. 79. Leaf-buds scaly. 

 Leaves scattered or fascicted^. from, linear to acicular. Statmnate 

 flowers spirally , arr-anged apid, subtended by invohicral scales: an- 

 ther-cSlls extrorse, parallel and contiguQus upon the sid,es of a very 

 narrow connective, which is oftensurmquritedhya scarious dilated 

 injlexed tip. Scales of the fertile arnents numerous, spirally imbri- 

 cated, carpelldry, each in the axil of a thin distinct bract, in fruit., 

 becoming, coriaceous or woody, and forming, a cone. Ovules in pairs y 

 ddnate to the inner face of each scale near the base, inverted. ' S^eds 

 separating frorn the scale at maturity, C!(insipicy,oiJtsly winged. Coty-^ 

 ledons S-16. , . 



6 LARIX Adans. Fam. PL ii, 480. (1763) 



Ta,ll trees with horizontal or ascending branches and small 

 narrowly linear deciduous leaves without sheaths in fascicles on 

 short lateral scaly bud-like branchlets. Aments short, lateral, 

 monoecious; the staminate from leafless' buds ; the fertile buds 

 commonly lea,fy at base and the aments red: Pollen grains sim- 

 ple. Cones ovoid or cylindric, small, erect, their scales thin, 

 spirally arranged, obtuse, persistent; 



L. occidentalis Nntt. Sylva iii, 143, t. 120. A large tree 100-200 feet 

 high and 1-6 feet in diameter, with thick reddish longitudinally fissured 

 bark: branchep short, horiz()^t»|, with glabrous branchlets: leaves nar- 

 rowly linear, *lr2 inches long, in alternate fascicles of lia-18, promptly 

 deciduous: cones ovate-cylindric, l-l)^ inches long, its scales broadly ob- 

 long, truncate, ciliate-f ringed when young: bracts scarious, dilated at 

 base, the narrow, terminal part exserted. In the mountains of eastern 

 Oregon and Washington to Idaho. 



L. Lyallli Parlat. Enuin. Sefn. Reg. Fl. 259. A rather small tree 50-" 

 100 feet high with horizontal oi' ascending branches, the branchlets and 

 bud-scales densely pubescent with whitish hairs: leaves narrowly linear, 



