284 
ALBAN STEWART 
nate, figure 7^, which, by the way, is the characteristic shape of the 
leaves on the form albemarlensis. I find that leaves of this shape 
sometimes occur on the type specimen of bindloensis, a tracing from 
one of which is shown in figure 7/. There are also leaves which are 
Fig. 7 
spatulate and rather oblanceolate on the type specimen of this form. 
There is a tendency for the margins of the leaves to be revolute in 
both the type, and the Academy specimen. 
Forma carolensis Robinson 
Described as being armed with short robust spines. Leaves 
spatulate with manifestly attenuated bases. Upper surface very 
shiny, 2-2.5 cm. long. Specimens from Abingdon, Charles, Chatham, 
and South Seymour Islands were assigned to this form in my former 
work on the Galapagos Island flora. ^ From what has been stated 
above, it can be seen at once, that, except for the arming of the stem, 
this description might apply equally well for the type specimen os 
bindloensis, as spatulate leaves are to be found on it. 
There is a great difference in the arming of the stem in the Academy 
series of specimens, not only from different islands but from the same 
island as well. Two specimens, assigned to this form in my earlier 
paper, were collected at Post Office Bay on Charles Island. One of 
these specimens has spines 1-2.5 cm. long, and it is only on the younger 
branches that the spines are short. The second specimen from this 
locality has slender spines, which are somewhat shorter than on the 
above specimen just described. On neither one of these are the 
spines short and robust. The type specimen appears to be an old 
branch so that the shortness of the spines on it can not be due to 
immaturity. 
The spines on the specimen from Abingdon Island are short and 
robust in some instances while in others they are nearly i cm. long. 
« L. c. p. 83. 
