THE MORPHOLOGY OF ARAUCARIA BRASILIENSIS 
Il. THE-OVULATE CONE AND FEMALE GAMETOPHYTE 
L. LANCELOT BURLINGAME 
(WITH PLATES XXV-XXVII AND TWO FIGURES) 
In a previous paper (1), the writer has described the source of 
the materials used in this investigation and the methods used in 
their preparation. Nothing need be added to the details presented 
in that paper except to mention the fact that there have been wide 
variations of weather conditions here in the last four years during 
which these collections have been made. Considerable differences 
have been noted in the stages reached at the same dates during 
these years. The 1g10 collections appear to be two weeks or more 
farther advanced than those of the next year. It is not easy to be 
sure of the facts in regard to this, for cones from the same tree 
taken on the same day often vary astonishingly. It may be, con- 
sequently, that the variations observed are purely fortuitous and 
would not be sustained if the observations were sufficiently numer- 
ous, although I am inclined to think they would be. If so, it would 
appear that a wet winter is decidedly favorable to early develop- 
ment. The collections of ovulate cones were made about once a 
week throughout three years for most of the seasons, but were 
made every day or two during the months of March and April. 
Each ovulate cone is borne at the end of a short branch. From 
three to five such branches commonly occur at a single whorl of 
branches (text fig. 1). The rudiments of these cone-bearing 
branches and that of the central leafy shoot are formed within 
the terminal bud of a branch. They can be found by dissecting 
such a bud from which the daughter buds are beginning to emerge 
in early April or late March. I was unable to find any recog- 
nizable trace of them earlier. Although buds exist within such 
terminal buds earlier, I did not succeed in finding any means of 
distinguishing between cones and ordinary leaf buds until just 
before the swellings of the ovules make their first appearance. 
Botanical Gazette, vol. 57] , [490 
