48 pn. W. NYLANDER AND THE REV. J. M. CROMBIE ON 
Milde, in his monograph of the Equiseta, has given this form 
the varietal name quoted above; this seems, however, quite un- 
justifiable, as it is evidently only a monstrosity, due probably to 
accidental circumstances. It does not appear to be at all 
common ; and I do not find that it has been hitherto recorded as 
occurring in this country. 
Fig. 3. 
A, B. Clypeole of Equisetum maximum passing into a leaf, from beneath (A), 
from the side (B). 7 
C, D. Another, more modified, showing the splitting of the primarily entire 
leaf-point. 
E, F. Another, in which the leaf-point is split almost as far as the sporanges ; 
the clypeole now merely an enlargement of the lower part of the leaf, 
late Dr. A. C. Maingay. By Dr. Winyraw NYLANDER, 
On a Collection of Exotie Lichens made in "px Asia by the 
F.M.L.S., and the Rev. James M. Cnowstg, F.LS. 
[Read December 7, 1882.] 
Tur Lichens here enumerated and described were collected by 
Dr. Maingay in British Burmah, the Straits Settlements, China, 
and Japan, at intervals from 1861 to 1865. After his death they 
were purchased by Sir Joseph Hooker, along with the collection 
of Phanerogams made by him in the same regions. The Lichens 
consisted of specimens mounted by Dr. Maingay for his own 
herbarium (including numerous British species), and of a mass 
of fragmentary unmounted specimens contained in a sack with 
