350 



Casuakinaceae. 

 Casuarina stricta, Ait., and C. distyla, Vent. (Plate 

 xxxii). The difference between the male flowers of these 2 

 species is very marked. In the former the 2 bracteoles are 

 deciduous, coherent at the summit by their cilia, and anterior 

 rather than lateral; in C. distyla they are persistent, distinct, 

 and lateral. The 2 perianth-segments of C. stricta are connate 

 and have the appearance of a single, flattish bracteole, 

 notched at the summit and pubescent on the 2 midnerves; 

 they are enclosed within the summit of the 2 bracteoles and 

 are posterior in position, i.e., they are placed against the inner 

 face of the stamen and next to the axis of the whorl. In C. 

 distyla the perianth-segments are opposite and quite free ; one 

 is anterior and the other posterior. In C. stricta the 

 bracteoles and perianth-segments cohere to each other on the 

 summit of the ripening anther and usually fall off in one 

 piece. The bracteoles are evidently the "valvulae calycis 

 exteriores" of Labillardiere (Nov. Holl. pi. spec, ii., 67, t. 

 218), and the perianth-segments are his "valvulae binae 

 interiores," from which he named the species C . quad rival 'vis 

 ( = C stricta J. 



It is probable than an examination of the male flowers of 

 Casuarina, which has only been attempted in one or two 

 instances, would help materially in the satisfactory determina- 

 tion of species. It is essentially a task for those who can 

 examine living specimens, because the delicacy or the organs 

 renders the investigation of dried material very difficult, a 

 fact which is noted by Bentham in his great work. 



Proteaceae. 



Ilakea ulicina, R. Br., var. flexilis, F. v. M. Yurgo, near 

 Karoonda (Dist. M; H. W. Andrew). 



Santalaceae. 



Choretrum glomeratum, R. Br. Yurgo, near Karoonda 

 (Dist. M; H. W. Andrew). 



POLYGONACEAE. 



Muehlenbechia Cunninghamii, F. v. M. Miller Creek 



(Dist. W; G. Taylor). 



Chenopodiaceae. 

 Atriplex rhagodioides, F. v. M. Walebing, near Kin- 

 goonya (Dist. W; G. Taylor). 



