302 HARVEY’S ILLUSTRATIONS, 
ad genicula emittens ramellos strictos erectos tenues breves, 
semel furcatos obtusos, articulatos, articulis diametro quad- 
ruplo longioribus, cylindricis. In exemplis nonnullis rami 
majores ramis-secundariis brevioribus papillosis; aliis ramulis 
elongatis tenuibus inferne nudis, superne ramelliferis obsessi ; 
aliisque rami minores sæpè interrupté verticillati (vel nunc 
nudi, nunc ramellis vestiti) sunt. Color purpureo-roseus. 
Substantia ramorum cartilaginea, ramulorum tenera. Fructus 
mihi ignotus. 
The slender branches, bright colour and straight once 
forked ramuli distinguish this species from G. equisetifolia, 
which it resembles in general habit and with which it has 
frequently been confounded by authors. I was so fortunate 
as to add it to the British Flora last autumn during a short 
excursion to the coast of the County of Wicklow. My first 
specimens were gathered on rocks below ** Black Castle" 
near the town of Wicklow, where it grows very sparingly 
indeed; and I afterwards procured a tolerable supply among 
rejectamenta at Ardinary Point about seven miles to the 
southward. On the continent it is a native of the coasts of 
France where it does not appear to be uncommon. 
Tas. CXX XIX. Fig. 1, Plant, nat. size. f. 2, portion of 
do. f. 3, ramuli :—magnified. - 
9. Calithamnion byssoides. Arn. in Hook. Br. Fl. v. ii 
p. 342. This proves to be a variety or the young state of 
C. corymbosum. 
10. Calithamnion vrsicolor.—8. seirospermum ; ramellis 
ultimis fasciculatis moniliformibus articulis demum in pseudo- 
capsulos mutatis. Harv. in Wyatt, Alg. Danm. N. 91. 
'This remarkable variety was discovered by Mrs. Griffiths 
last autumn on the Coast of Devonshire, and beautiful speci- 
mens are published in the 2d vol. of the ‘ Algee Danmoni- 
enses" In ramification and general appearance it perfectly 
agrees with the true C. versicolor, but in the fructification 
there is a striking difference, The capsules, instead of being: 
as in the typical form, borne solitary in the axilla, are ranged 
consecutively in a moniliform manner and a number of these 
