1 1 12 Michell. — On the Comparative Anatomy of the 
in this genus is pseudo-dichotomous , 1 therein differing from that in Portn- 
lacaria , where the branching is of the ordinary lateral type. 
Solereder gives a brief account of the anatomical features of the 
Portulaceae , 2 but little work appears to have been done with regard to this 
order. Mention is made of a few of the outstanding characters of Portula- 
caria afra. None of the features of this order, upon which Solereder lays 
stress, is absent in Ceraria , although in a few minor details this genus seems 
Text-fig. i. Ceraria gariepina. Photograph taken at Aggenysin Bushmanland in 1909 
by Dr. H. Ii. W. Pearson. From the 1 Gardeners’ Chronicle ’. 
to have no parallel in the other genera. The arrangement of the mucilage 
cells, and the occurrence of calcium oxalate in the intercellular space beneath 
a stoma, may be quoted as instances of this. 
Anatomy. 
A. Leaf. 
C. namaquensis. 
The structure of the leaf corresponds very closely with that of Portu- 
lacaria afra> to which genus Ceraria is closely allied. Proceeding from 
without inwards, it is found that the epidermis has its outer and inner walls 
cutinized to a very great extent (PI. XCVIII, Fig. 1). The radial walls are 
1 Pearson and Stephens (’12) (3). 2 Solereder (’08), vol. i, pp. m -13 (6). 
