KEY, BASED UPON FLOWEBS. 7 



e f . Larger ; leaves 4-angled (Picea\ 



1-1 in. long, scales eroded at tip ; branchlets pubescent. 



20 PlCEA NIGRA. 



2-in. long, subentire at tip, branchlets smooth 100. P. ALBA. 



C 3 . Leaves deciduous, soft, needle-shaped and in fascicles of many each ; cones 

 about 8 lines in length, scales thin (Larix) and with inflected margins. 



23. L. AMEKICANA. 

 6 9 . Few imbricated scales without bracts and each bearing 2 erect ovules. 



Flowers monoecious, scales 8-12 (Thuya) 24. T. OCCIDENTALS. 



Flowers dioecious, scales fleshy and consolidated, making a small dark blue 



berry like fruit 25. JUNIPERS VIRGINIANA. 



6 3 . Scales peltate with edges joined; cones subglobuse short 



i- in. in diameter, scales usually 6 (ChamcRcyparis) 74. C. THYOIDES. 



1 in or less in diameter; scales 15-20 119. TAXODIUM DISTICHUM. 



b*. Single, naked, drupe-like seed, 1 in. or slightly more in length, sessile. 



120. TOBBEYA TAXIFOLJA. 



