786 PINACEX 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- 
obovate, with thick spreading margins. Cotyledons 4-6. 
S. simpervirens 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 lines 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 
yo 2-2) lines long. Near the coast, extreme southern Oregon and 
aiifornia. 
Tribe 3 Abietinex Endl. Syn. Conif. 79.  Leaf-buds scaly. 
Leaves scattered or fascicled, from linear to acicular. Staminate 
flowers spirally arranged and subtended by tnvolucral 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. Ovulesin 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. Pl. 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 short, horizontal, with glabrous branchlets: leaves nar- 
rowly linear, 1-2 inches long, in alternate fascicles of 12-18, promptly 
deciduous: cones ovate-cylindric, 1-14 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. Lyallii Parlat. Enum. Sem. Reg. Fl. 259. A rather small tree 50- 
100 feet high with horizontal or ascending branches, the branchlets and 
bud-scales densely pubescent with whitish hairs: leaves narrowly linear, 
