3 2 4 
CONIFERAE 
N. Am. 
Sequoia. 
Cryptomeria. 
Taxodium. 
Glyptostrobus. 
B. Long shoots only, 
a- Seed reversed. 
a. Cpl. with narrow scale, transverse, above seed. 
1 1 . Cunninghamia* 
/S. Cpl. with ridge-like inner scale. Tasmania. 
12. Arthrotaxis. 
y. Cpl. shield-shaped, no distinct scale. 
13 - 
b. Seed erect. 
a. Cpl. with toothed scale. 14. 
/ 3 . Cpl. shield-shaped, no distinct scale. 
I. Cone-scales persistent. N. Am. 15. 
II. ,, deciduous. China. 16. 
2. CUPRESSINEAE: 
2 a. Actinostrobinae : 
A. Cone with involucre of several whorls of scale-leaves* 
Whorls 3-merous. 17. Actinostrobus. 
B. No involucre. 2- 3- or 4-merous. Valvate. 
18. Callitris. 
C. Transition form to preceding. Cpls. slightly imbricate* 
2- 3-merous. 19. Fitzroya. 
2 b. Thujopsidinae: 
A. Cpl. with 4 — 5 seeds. 20. Thujopsis. 
B. „ „ 2 (1—3) seeds. 
a. Cpls. 4, the upper pair fertile. 21. Libocedrus. 
b. ,, 6 — 8, both upper pairs fertile. 22. Thuja. 
2 c. Cupressinae : 
A. Cpls. many-seeded. 23. Cupressus. 
B. ,, 2-seeded. 24. Chamaecyparis. 
2d. yuniperinae: 
Only genus. 25. Juniperus. 
3. PODOCARPEAE: 
A. Seeds quite reversed, almost or quite concealed between the 
scales of the (when ripe) fleshy cone. Aril short. 
a. Cpls. united when ripe. Monoecious. Needle leaves. 
26. Saxegothaea. 
b. Cpls. free. Dioecious. Leaves scale-like. 
27. M icrocachrys. 
B. Seeds anatropous, projecting beyond cpls. Aril developed 
as a complete outer integument. 28. Podocarpus. 
C. Transition to preceding. Seeds inserted on lower half or in 
angle of cpl., little or not at all reversed. 
29. Dacrydium. 
4. TAXEAE: 
A. Long and short shoots, the latter phylloclades. 
30. Phyllocladus. 
