29 
106, 110, 112, 119, 120, 121. Between C. and M., and 
again between M. and U., there is a border-land on 
which the sectional species overlap and intermingle, 
so that it is impossible to draw an exact limit any- 
where, but within the limits specified the character- 
istic species of these districts are sufficiently marked. 
Talcing, next, these districts in pairs, we get two 
additional Lists. Thus over both 0. and M. stretch 
Nos. 14, 29, 72, 91, 92, 125. Over M. and U. together 
extend Nos. 9, 10, 34, 42, 61, 63, 66, 80, 88, 90, 113, 
117 ; and to these we would add Nos. 27, 49, 76, as 
also Nos. 2, 11, 50, 58, 59, 70, 95, 100, 104, 115 ; the 
former of these two sub-classes having its proper 
home in M., but stretching more or less into IJ.. and 
the latter having its proper home in U., but over- 
lapping more or less the upper portion of M. 
Finally, the following Nos. seem to be equally at 
home in all the three Sections, viz. : — 4, 19, 26, 33, 
36, 38, 39, 41, 45. 46, 56, 57, 67, 85, 86, 87, 102, 116, 
124, 128, 129, 132. 
Adding these various sectional numbers, we find 
that of our 132 ascertained species, 0. contains 43, M. 
80, and U. 75. 
In this analysis we have made no account of mer’ely 
sporadic plants, e.g., one of No. 78 on the southern 
limit of Little Noodsberg, one of No. 20 at Umpu- 
mulo, one of No. 83 at Fort Buckingham, and even a 
few stray plants of No. 69 (which swarms in U.) on 
the Great Noodsberg. But, with our present data, 
we have allocated the several species as exactly as 
possible ; and although, confessedly, this allocation 
is only an approximation to accuracy, it may, never- 
theless, serve a good purpose by stimulating other 
observers to follow out so interesting a line of en- 
quiry. After all, however, draw border-lines where 
we may, in Botanical as in more momentous ques- 
tions, doubtful characters will congregate there. 
"VVe insert the following note as indicating a pro- 
bable solution of some of our difficulties. It is from 
one to whose long and indefatigable industry the 
Botany of South Eastern Africa has been much 
indebted : — 
My Dear Mr. Bucijanan, — I observe that, in your 
Revised List, my name is repeatedly mentioned in 
connection with Ferns said to have been collected by 
