ABIETINE/E. 305 



long ; convex, obscurely keeled and dark green on the dorsal side, 

 slightly convex and paler on the ventral side. Staminate flowers and 

 cones not seen.* 



Araucaria Rulei, Mueller ex Lindley in Gard. Chron. (1861) p. 861, with figs. 

 Carriere, Traite Conif. ed. II. 605 (Eutacta). Parlatore, D. C. Prodr. XVI. 371. 

 Gordon, Pinet, ed. II. 42. 



Originally discovered about the year 1860 by William Duncan, a plant 

 collector in the employ of Mr. John Rule, a horticulturist of Melbourne, 

 Victoria, on an islet off the coast of Xew Caledonia, covering the summit 

 of a lofty extinct volcano fully exposed to the severe storms which 

 periodically sweep over that region ; it is also said to be endemic in New 

 Caledonia where it attains greater dimensions. It was introduced to British 

 gardens by the Yeitchian firm in 1863. In its young state Araucaria 

 Rulei is polymorphous, and several varieties are distinguished by name in 

 Australia where it is much cultivated as a decorative tree. 



TRIBE-ABIETINE.E. 



Flowers monoecious. Staminate flowers terminal or axillary, solitary 

 or spicate, often densely clustered, rarely umbellate. Stamens spirally 

 crowded ; anther cells 2, dehiscence longitudinal, rarely transverse. 

 Scales of fruit-cones spirally arranged and consisting of two struc- 

 tures, the bract and seed-scale or sporophyll, the former more 

 or less free or concrescent. Seeds 2, inverted. 



SUB-TRIBE I. PINE^E. 



Fruit-cones maturing in two, rarely in three years. Leaves 

 dimorphic, the primordial scattered ; the secondary fascicled, per- 

 sistent ____ 14. Pinus. 



SUB-TRIBE II. LARICE.E. 



Branchlets dimorphic, the one elongated with the leaves scattered 

 and inserted on cortical outgrowths (pulvini) ; the other arrested or 

 " spur- like " with the leaves fascicled. 



Fruit-cones maturing in one year. Leaves deciduous. 



Staminate flowers solitary, seed scales persistent. 15. Larix. 

 Staminate flowers umbellate, seed scales deciduous. 16. Laricopsis. 

 Fruit-cones maturing in two years. Leaves persistent. 



Staminate flowers solitary, seed scales persistent. 17. Cedrus. 



* Imperfect figures of both are given in the Gardeners' Chronicle, loc. cit. 

 X 



