A SYNOPSIS OF THE VEGETABLE KINGDOM. 



55 



AA. Fr. a cone 



B. Cone scales all fertile. . . 

 c. Scales of the larger 

 branches usually al- 

 ternate or irregularly 



opposite 2. « IDRINGTONIA. 



cc. Scales of the branches 

 usually In whorls of 



3 or 4 3. Callitris. 



BB. Cone scales partly fertile, 



partly empty 



c. No. of seeds under 

 each fertile scale co, 

 usually numerous 

 narrowly 2-winged, 

 maturing the second 



year 4. Cdpeessus. 



cc. No. of seeds under each 



fertile scale 2-5. . . . 



D. Seeds samara-like. 



winged above. 2 



under each fertile 



scale 5. LiBocEDRn.s. 



DD. Seeds winged every- 

 where or not at 



all 



E. Fertile scales usu- 

 ally 4 or 6. rare- 

 ly 8 



F. No. of seeds 4 or 



5 G. Thuvopsis. 



PF. No. of seeds 2 or 



H 



G. Mature cones 

 glol)ose, hard, 

 with scales 

 thickened or 

 dilated at 

 apex : seeds 

 broadly o r 

 rarely nar- 

 row I y 2- 



winged 7. Cham.ectparis. 



GO. Mature cones 



various 



H. Seeds rather 

 n a r r o w ly 

 2- w I n g e d : 

 otherwise as 

 in T h u y a, 

 sub genus 



Euthuya. ...8. Thuta, Subgenus 

 Macrothuya. 

 HH. Seeds not 

 winged: 

 young 

 cones glo- 

 bose and 

 some what 

 fleshy ; ma- 

 ture cones 

 s u b o V I d 

 with hard 



scales 9. THtriA, subgenus 



Biota. 

 EB. Fertile scales 2 : ma- 

 ture cones ovoid- 

 oblong nodding, 

 the scales hardly 



thickened lo. Tuvya, subgenus 



Euthuya. 



2. Bald Cypress Tribe. 



A. Ovules 3-6, usually 5 in 



Sequoia 



B, Ovule-bearing blade digi- 



tatcly 5-cut at apex. ...11. Cryptojieri.4. 

 BB. Ovule-bearing blade en- 

 tire at margin 12. Sequoia. 



aa. Ovules 2 



B. Seeds drupe-like, large, 

 long-exserted from cone 



scales 13. Cephalotaxus. 



EB. Seeds included by the 

 cone scales which are 

 woody at apex 14. Taxodium. 



3. Tew Tribe. 



A. Ovule-bearing blade at first 

 ring-shaped : then cup- 



shaped and fleshy, finally 

 berry-like, including the 

 seed but not adnate to It, 

 open at top : anthers um- 

 brella-shaped after flow- 

 ering, the cells connate in 



a circle l.j. TAXns. 



aa. Ovule-bearing blade at first 

 cup-shaped, later includ- 

 ing the ovary, finally 

 strongly adnate to the 

 seed : anther cells con- 

 nate in a semi-circle. . . . IG. Torreya. 



AAA. Ovule-bearing blade long- 

 stalked, shortly 2- co - 

 cut at apex, the lobes di- 

 lated into a ring or short 

 cup adnate to the seed : 

 anther cells 2, pendulous.17. Ginkgo. 



4. roDocARPt's Tribe. 



Scales of pistillate aments 

 few, adnate to peduncle and 

 with it usually fleshy 18. Podocabpos. 



5. Abaucaria Tribe. 



A. Ovule-bearing blade flnally 

 much increased and hard- 

 ened, making the greater 

 part of the woody cone.. .10. Sciadopitys. 

 AA. Ovule-bearing blade thin 

 terminated at the apex by 

 a hardly prominent line 



or apical point 



b. Ovules 3 : ovule-bearing 

 blade much shorter 



than the scale 



c. Anther cells 2-4 : seeds 

 surrounded by a nar- 

 row wing 20. Cn.NNINGHAMIA. 



cc. Anther cells 5- o° : 

 seeds with a broad 

 wing on one or all 



sides 21. Agathis. 



BB. Ovule 1 : ovule-bearing 

 blade hardly shorter 

 than scale: anther cells 

 6— 00 : seed everywhere 

 or nowhere winged. ...22. Arai'CAEIa. 



6. Fir Tribe. 



A. Foliage deciduous 



B. Male fls. solitary in a 

 leafless scaly bud : con- 

 nective not produced 

 beyond anther cells or 

 scarcely prominent : 

 cones reflexed : scales 



persistent 23. Larix. 



BB. Male fls. clustered, pen- 

 dulous ; cone scales de- 

 ciduous 24. PSEUDOLARIX. 



aa. Foliage evergreen 



B. Connective of anthers 

 usually produced into a 

 a scale-like appendage. 

 c. Male fls. subspicate at 

 base of new shoots : 

 cone scales persistent. 25. PiNUS. 

 cc. Male fls. solitary in 

 the cluster o f Ivs. 

 which terminate 

 short branch! ets : 

 cone scales flnally de- 

 ciduous 26. Cedros. 



CCC. Male fls. solitary in the 



axils : cones retlexed : 



scales persistent. ...27. Picea. 



BB. Connective of anthers um- 



bonate beyond the cells 



or hardly prominent : 



male fls. solitary in 



axils 



c. Cones reflexed ; scales 



persistent 



D. Subtending bract con- 

 spicuous 28. PSEDDOTSUGA. 



Di>. Subtending bract 



small 29. Tsuga. 



