786 PIN ACE JE SEQUOIA 



LARIX 



ches, linear leaves and monoecious flowers. Aments terminal 

 and axillary upon young shoots, of rather numerous spirally 

 arranged scales. Staminate flowers small, involucrate with scale- 

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

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

 verted ovules at the base of each scale. Cones maturing the 

 second year, woody, oval, the scales divergent at right angles 

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

 umbilicate apex, setaceous-mucronate. Seeds compressed, oblong- 

 obo.vate, with thick spreading margins. Cotyledons 4-6. 



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

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

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

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

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

 6-12 linen long, about 1 line wide: staminate aments about 2 lines long: 

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

 brown, 2-2} lines long. Near the coast, extreme southern Oregon and 

 California. 



Tribe 8 Abietinese Endl. Syn. Conif. 79. Leaf-buds scaly. 

 Leaves scattered or Jascicled, from linear to acicular. Staminate 

 flowers spirally arranged and subtended by involucral scales: an- 

 ther-cells extrorse, parallel and contiguous upon the sides of a very 

 narrow connective which is often surmounted by a scarious dilated 

 inflexed tip. Scales of the fertile aments numerous, spirally imbri- 

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

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

 adnate to the inner face of each scale near the base, inverted. Seeds 

 separating from the scale at maturity, conspicuously winged. Coty- 

 ledons 3-16. 



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



Tall 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 leafy 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 Nutt. Sylva iii, 143, t. 120. A large tree 100-200 feet 

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

 bark: branches shdrt, horizontal, with glabrous branchlets: leaves nar- 

 rowly linear, 1-2 inches long, in alternate fascicles of 12-18, promptly 

 deciduous: cones ovate-cylindric, 1-1 /^ inches long, its scales broadly ob- 

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

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

 Oregon and Washington to Idaho. 



L. Lyallil Parlat. Enum. Sem. Reg. Fl. 259. A rather sm all tree 50- 

 100 feet high with horizontal or ascending branches, the branchlets and 

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



