RHODOSPERME. 177 
decay or when cast ashore, it is often bleached white, or turns to a pale 
yellow. 
The two plants which I shall now describe, formed, until recently, th 
only members of the genus Chrysymenia; both, however, have been 
‘emoved to Chylocladia, and now, according to Professor Agardh’s most 
recent arrangement, they are the only British representatives of the old 
genus Chylocladia. The name of the genus, which signifies ‘‘ juicy 
branch,” is very applicable to these soft red seaweeds, which are so flaccid 
and tender, that with very little care they are easily displayed, and after 
gentle and gradually applied pressure, they adhere most perfectly to 
paper. Chylocladia clavellosa, the larger and more abundant of the two, 
is represented at Fig. 163. Itis the upper half of a most beautiful specimen 
taken in Torbay, where it is cast ashore every summer. This lovely annual 
is found on all the British coasts, but is most abundant and of larger size 
on the south coast of Devon than’ elsewhere. I once found a specimen on 
the shore near Exmouth, fully 2ft. long. The fronds are usually from 4in. 
to 14in. in height. The main stem is very thin at the base, butit gradually 
thickens upwards and tapers off at the apex to a fine point. The branches 
are numerous and closely set on each side of the stem, and are clothed 
with one or two series of similarly arranged branchlets or ramuli, which 
are lanceolate or tavered at their insertion and at the tips. Thus each 
lateral branch is a kind of repetition, in a limited degree, of the order of 
growth of the whole plant. Instances occur in which the branching is 
excessively crowded, and in these the ultimate ramuli spring from all sides 
of the stems and branches. Conceptacles, somewhat conical in form, are 
seated on the upper branches: their form and position are represented in 
the magnified branchlet at b, Fig. 163. Tetraspores, which are microscopic, 
are immersed in the little club-shaped ramuli or terminal branchlets. 
The colour is a rosy red, often a brilliant pink, turning a golden yellow 
in decay: and it was owing to the constant tendency of this species to 
assume the latter tint that the name Chrysymenia, or golden membrane, 
was originally given to it by Mr. Dawson Turner. The pretty little plant 
represented at Fig. 164 was discovered at Skaill (Orkney), and named by 
Dr. Harvey Chrysymenia Orcadensis. It was afterwards found at Filey, 
and many years later by Dr. Cocks and myself on some of the mooring 
buoys in Plymouth Harbour, and still more recently by Mr. John Gat- 
combe in the same locality. My own northern specimens are, however, finer 
and better grown plants than any I ever met with in the south of England. 
The main stems of this little species are about 2in. high, tapered at each 
extremity, but very broad in proportion to their length. They are 
furnished with several pairs of pinne or wing-like branches of similar 
form, but much shorter and narrower, and some of these branchlets 
throw out occasionally a solitary tiny ramulus. In some of the Plymouth 
plants I have observed that the branches were narrow and very much 
attenuated ; but I believe this to be truly a northern species, and although 
it is found rather abundantly some seasons in the south, such forms of 
