48 PINACEAE, 
Larix. Larch: « Tamiaeade 
Percurrent deciduous trees with reddish or brown soft wood 
with few resin passages; slender deeply fluted twigs; small pale 
homogeneous pith; small alternate raised crescent-shaped or 
transverse leaf-scars with 1 bundle-trace; no stipule-scars; soli- 
tary sessile round buds with a number of exposed scales; flat 
entire narrow green leaves clustered on short spurs; monoecious 
catkin- or cone-like naked flowers; and round-ovoid drooping 
cones with persistent thin scales each covering 2 winged seeds. 
I. Cones 15-40 mm. long: scales usually downy. 2. 
Cones 10-15 mm. long: scales glabrous. L. laricina. 
2. Branches rather spreading. L. decidua. 
Branches distinctly drooping. L. decidua pendula. 
Ceprus. Cedar. 
Evergreen openly branched trees with yellowish soft ductless 
wood without resin-passages; fluted rather slender twigs; small 
continuous pith; alternate raised 4-sided small leaf-scars with a 
single bundle-trace; no stipule-scars; round or ovoid scaly not 
resinous buds; 4-angled needle-like leaves often crowded on 
short spurs; monoecious catkin- or cone-like naked flowers; and 
cones with thin scales each covering 2 winged seeds. 
1. Branches not drooping: cones flat or hollowed at tip. 2. 
Branches drooping: cones rounded at tip. 6. 
Broad and flat-topped. 3. 
Conical or oblong. 5. 
iS 
3) Trees... 4 
Shrubby. C. Libani nana. 
4. Leaves green. C, Libani. 
Leaves glaucous. C, Libani glauca. 
5. Conical. C. atlantica. 
Narrowly oblong. C. atlantica fastigiata. 
6. Of erect growth. 7. 
Very spreading or prostrate. C. Deodara pendula. 
7. Narrowly oblong. C, Deodara fastigiata. 
Rather conical. 8. 
