286 CONTRIBUTIONS TO BRITISH LICHENOLOGY, 
relative to Mr. Foot's Orchis pyramidalis, which I sent to Seeinauif s 
' Journal of Botany.' 
■ I have now another remartal^le instance of duplication in an Orchid 
flower, though caused in a very different manner from that of the former. 
It is the beautiful Calantlie veratrifolia^ a tropical species. The altera- 
tion in this instance has occurred by the blending of three flowers into 
one, and is only partial on the raceme. The three flowers are attached 
to one solid peduncle, whicli. springs from the rachis between two bracts, 
in place of one, which is the normal condition of the flowers. Each 
lias its proper labellum, column, and pollen-masses ; but there are only 
ten pieces of sepals and petals, in the place of fifteen, which would 
Lave been the case had the flowers been separate and normal. The 
spur on the middle flower is wanting, and in place of it are two peta- 
loid pieces with green tips. It is further worthy of notice, that the 
flower on the rachis, which is immediately under the malformed one 
described, is without a labellum altogether. 
CONTRIBUTIONS TO BRITISH LICHENOLOGY; BEING 
NOTICES OF NEW OR RARE SPECIES OBSERVED 
SINCE THE PUBLICATION OF MUDD'S ^MANUAL/ 
B:^ Isaac Cabroll, Esq. 
I. 
In the present paper, to which I shall have to make some additions, 
I have adopted Nylander's classification as the best on the whole, 
though perhaps susceptible of improvement in detail. The system 
followed by Fries and others, of determining genera by the form, etc., 
of the spores, is to my mind exceedingly unnatural, and in very many 
cases inapplicable in practice. 
Pr/renidium adinelhm, NyL Flora, 1865, p. 210.— On chalk, Boxley 
Hill, Kent (Vice-Admiral Jones), A new genus of Nylander's. 
furfurelli 
Summit of Corbuy, 
) 
C, furfureum^ Nyl. in litt. — Summit of Ben Lawers, with apothecia 
(Jones, afterwards Carroll). By Loch Tay and in Glen Dochart; 
sterile (Jones). — A curious and distinct plant. Spores S-nae, simple, 
