174 CONIFERAE 



II. Cpl. with ridge-like inner scale. Tasmania, Austr. 



25. Athrotaxis. 



III. Cpl. shield-shaped, no distinct ov. scale. N. Am. 



26. Sequoia. 

 /3. Seed erect. 



I. Cpl. with toothed scale. 27. Cryptomeria. 

 II. Cpl. shield-shaped, no distinct scale. 

 Cone scales persistent. N. Am. 



28. Taxodium. 

 Cone scales deciduous. China. 



29. Glyptostrobus. 

 D. L. opp. or whorled, rarely alt., often heterophyllous; ovule 



erect. IV. Citpresseae. 



a. Cone woody when ripe ; cpls. valvate. 



i. Actinostrobinae. 



a. Branchlets compressed ; cones sol., axis not produced 

 beyond scales ; scales 4 ; N. Afr. 



30. Tetraclinis. 



/3. Branchlets angular ; cones paniculate, axis produced 

 beyond scale's. 



Scales 6 unequal ; Austr. 31. Callitris. 

 ,, 8 equal ; Austr. 32. Actinostrobus. 



,, 4 equal ; trop. and S. Afr. 



33. Widdringtonia. 



y. Branchlets flattened or angular ; dioecious ; i cones 

 sol. term.; axis produced; sharp point on back of each 

 scale near top ; Chili, Tasm. 34. Fitzroya. 



b. Cone woody when ripe, cpls. imbr. ; whorls of all fl. 



2-merous. 2. Thujopsidinae. 



a. Cpl. with 45 seeds. 35. Thujopsis. 



j3. Cpl. with 2 (i 3) seeds. 



Cpls. 4, upper pair fertile. 36. Libocedrus. 

 Cpls. 6 8, both upper pairs fertile. 



37. Thuja. 

 Cpls. 68 pair. 38. Fokienia. 



c. Cone woody when ripe; cpl. peltate; whorls of all fls. 



2-merous. 3. Cupressinae. 



a. Cpls. strongly woody when ripe. 



39. Cupressus. 



p. Cpls. slightly woody when ripe; twig system flat in 

 one plane. 40. Chamaecyparis. 



d. Cone, berry or drupe-like when ripe. 



4. Juniperinae. 



Only genus. 41. Juniperus. 



Commitella Rydberg (Hatcheia p.p.). Saxifr. (i). i W. U.S. 

 Coniog-eton Blume = Buchanania Roxb. (Anacard.). 

 Coniogramme Fee. Polypodiaceae. 3 warm |*. 

 Conioselinum Fisch. (Ligusticum L. p.'p. BH.}. Umbelliferae (in. 6). 



7 N. palaeotemp. 



ConiumL. Umbelliferae (in. 4). 2 N. temp., S, Afr. C. maailatitm L. 

 (hemlock, very poisonous) Brit. 



