KEY TO THE GENERA OF TREES 61 
OO. Leaves about 2 in. long and gradually widening from the 
acute tips to the broad (% in.) bases, which are decurrent 
ON, THE Ste canine as aweaeea Rann 99. Cunninghamia. 
OO. Leaves 14-1 in. long, sharp-pointed, very flat, two-ranked, 
somewhat lanceolate in form; base narrowed almost to a 
POLO C55 wel sidmadictsnordadoadin an edsam Se 102. Sequoia. 
PP. Leaves not decurrent, usually in whorls of three around the 
stem, sometimes opposite, acute-pointed; fruit small (% in.), 
rounded, dark-colored berries ............... 106. Juniperus. 
PP. Leaves decurrent on the stem, less than 44 in. long. (QQ.) 
QQ. Fruit small, globular cones; the scales not lapping....... 
Sia SEAS GED EA teamed re FERS SEE 104. Chamecyparis. 
QQ. Fruit small, elongated cones of few, lapping scales....... 
fasede. opgaaghatitewsteawiyaacee ad seecangs 103. Thuya. 
RR. Leaves usually but little flattened, but jointed to a short, 
brown petiole which is attached to'a somewhat grooved 
twig; cones pendent, of lapping scales........ .. 94. Picea. 
RR. Leaves decidedly flattened, not jointed, but narrowed to a 
petiole which is usually green or greenish in color. (SS.) 
SS. Leaves rounded or obtuse at the tip, distinctly two-ranked, 
usually less than 1 in. long; cones oval, 1 in. or less long, 
OL lapping SCA1ES. i wieceiasecav ers ereeaedcneaes 95. Tsuga. 
SS. Leaves acute at the tip; fruit (found only on wu portion of 
the plants, as the flowers are dicecious) drupe-like, with a 
single nut-like seed. (TT.) 
TT. Leaves not two-ranked, over 2 in. long..... 108. Podocarpus. 
TT. Leaves quite regularly two-ranked. (UU.) 
UU. Leaves marked by two longitudinal lines; bruised or 
burned leaves with a very disagreeable odor............. 
Bib weal vegan tank gussets eles Tues s aaeAEA +++. (1078, Torreya.) 
UU. Leaves with the midrib forming a distinct ridge, odor not 
disagreeable. (WV.) 
VV. Leaves usually less than an inch long........... 107. Taxus. 
VV. Leaves usually more than an inch long.................. 
Sach pitas Shear SE Rtas SoBe Shae & aes ahaa ueedoce tats (107. Cephalotaxus.) 
WW. Spray decidedly two-ranked, fan-like. (YY.) 
WW. Spray branching in an irregular way, not two-ranked. 
(XX.) 
XX. Fruit a purplish berry; bark shreddy ....... 106. Juniperus. 
XX. Fruit a cone of thick, pointed, not lapping scales.......... 
Set opie ES aipthoardyar.shtneatd Gagan new eae echataaaer aed Situs 102. Sequoia. 
YY. Cones elongated, of lapping seales............ 103. Thuya. 
YY. Cones globular, of peltate, valvate scales ................ 
sp aAlataht B04 84 4-6:¢ BY eae dinateaigeavees 104. Chamecyparis. 
