XLIII] 



FERTILE SHOOTS 



111 



which possess ovulate shoots differing widely from cones as the 

 term is generally understood. The cones of Araucaria (figs. 680, 

 681) and Agathis reach a considerable size; those of Araucaria 

 Bidwillii 1 , similar to some cones of Encephalartos, may be 28 cm. 

 in diameter and in some species of Agathis 2 they exceed 11 cm. 



B C F 



FIG. 679. A, Araucaria Cookii var. luxuriant. B, A. Cookii. C, Araucaria Cookii,. 

 microstrobilus. D, E, Araucaria Muelleri, part of a microstrobilus and a single 

 sporophyll; ps, microsporangia. F, Araucaria Montana, branch. (After 

 Seward and Ford.) 



and are 14 cm. long. The cone-scales of Agathis are flat, woody 

 structures bearing a single ovule (fig. 682) : in Araucaria the 

 single seed is embedded in the scale, and a more or less prominent 

 appendage, the ligule, forms a characteristic feature (fig. 683, I). 



1 Gard. Chron. April 14, 1894, p. 465. 

 t Seward and Ford (06) B. 



