18 KEY AND FLORA 
1. L. laricina Koch. American Larcu, Tamarack, Hackma- 
TACK (wrongly, but quite generally, called Cypress and Juniper). 
A tall, slender tree, 30-100 ft. high. Leaves slender and less than 
1 in. long, very pale bluish-green. Cones 4-3 in. long, few-scaled. 
Wood hard, tough, and heavy, of considerable use for shipbuilding. 
2. L. decidua Mill. European Larcu. Leaves bright green and 
longer. Cones longer than in the preceding species and many-scaled. 
Cultivated from Europe. 
VI. TAXODIUM Richard 
Trees. Leaves spreading so as to appear 2-ranked, decidu- 
ous. Flowers moncecious, appearing before the leaves ; stami- 
nate ones numerous, globose, forming long, terminal, drooping, 
panicled spikes; anthers 2—5-celled. Pistillate flowers single 
or in pairs, bractless, the peltate scales 2-ovuled. Cone globose ; 
the very thick woody scales angular, separating at maturity. 
Seeds 3-angled, pyramidal.* 
1. T. distichum Richard. Bap Cypress. A very large tree; bark 
dark brown, rough, fibrous; many of the twigs deciduous with the 
leaves. Leaves alternate, opposite, or whorled, 2-ranked, flat, linear, 
4-2 in. long. Cones terminal, globose, about 1 in. in diameter; ends 
of the scales much thickened, wrinkled, and with a distinct trian- 
gular marking. Common in swamps and on the borders of streams ; 
wood reddish, soft, light; specially valued for shingles and fence 
posts, and for boat building.* 
VI. THUJA L. 
Flowers small, terminal, moncecious, on different branches. 
Stamens each consisting of a scale-like portion bearing 4 
anther-like cells. Pistillate flowers consisting of a few overlap- 
ping scales which ripen into a small, loose cone. Leaves ever- 
green, opposite, and closely overlapping on the stem, of two 
kinds, those on the more rapidly’ growing twigs awl-shaped, 
the others mere scales. 
1. T. occidentalis L. ArBor Vit#, Crepar. A small tree, 20-50 
ft. high, with soft, fibrous bark. Leaves mostly awl-shaped and blunt. 
Cones ellipsoidal, their scales 2-seeded. Grows on rocky ledges, but 
reaches its greatest size in cool cedar swamps. Wood soft, yellowish, 
fragrant, durable, prized for shingles and fence posts. 
