Jication: 1, roundish or oval, opake tubercles borne on short stalks, which 
spring irregularly from the sides of the stem, and from the lower parts of 
the frondlets, containing, beneath a thick coat formed of closely packed 
filaments, a dense mass of minute spores. 2, dark-red, thickened, wart-like 
patches of irregular form and size, occupying the disk of the frondlet, and 
prominent on both surfaces, composed of moniliform filaments. These are 
usually found on distinct plants, but sometimes occur on those which also 
bear tubercles. et¢raspores unknown (to me). Colour of the frond, a deep 
brownish or livid purple-red; passing to greenish and whitish in decay. 
Substance rigid, somewhat cartilaginous, and thin, very tough. 
PLL LL LLL LLL LLLP PPP POP 
This plant bears a considerable resemblance in form to Rhody- 
menia Palmetta, and still more to the R. flabellifera of the 
Southern Ocean, but the colour and the fructification, so far as 
the latter is known, are very different: and I agree with my 
valued friend Mrs. Griffiths in regarding this as a species of Phy/- 
lophora, nearly related to P. Brodi@i. In the list given at the 
end of our first volume a different place has been madvertently 
assigned to it. 
I am not aware that /efraspores have yet been noticed on P. 
membranifolia. The swellings of the periphery which are called 
nemathecia, and which, in their,dark colour, and the high organi- 
zation of their tissue, seem to be connected with fructification, 
are not uncommonly formed. They usually occur on individuals 
which do not produce tubercles ; but Mrs. Griffiths once found a 
specimen, a part of which she has kindly communicated to me, 
which bears both tubercles and nemathecia. This, though a rare 
occurrence, is not to be wondered at, because these organs have 
really much resemblance to each other in structure ; so much so 
that it is probable that one is but a metamorphic form of the 
other, or, at least, is an organ of an analogous nature. 
Fig. 1. PHyLLOPHORA MEMBRANIFOLIA. 2. A frondlet, with nemathecium :-— 
both of the natural size. 3. Vertical section of a nemathecium. 4. Part of 
the same. 5. A tubercle. 6. The same, cut across. 7. Part of a ver- 
tical section of the same. 8. Section of the frond :—all more or less highly 
magnified. 
