(152) 



tapering, except at the apex. Articulations cylindrical, very variable, 

 generally from five to seven times longer than broad, but often much 

 longer, those of each division becoming shorter ; dissepiments wide and 

 very distinct, apical articulation conical, obtuse. Substance rather flaccid, 

 and more or less adhering to paper. Colour, a rather dull brownish red, 

 not changing much in drying. Favellse somewhat roundish, bilobed, 

 lateral on short stalks, with an involucre of from three to four spine-like 

 ramuli, about as long as the favellse. Tetraspores spherical, sessile on 

 the tipper edge of short ramuli, which are either simple or clustered at 

 the apices of short stalks. 



This species is almost intermediate between the present genus and 

 that of Grijfithsia, and in a natiu'al arrangement ought perhaps to be 

 placed next that genus, as its tetraspores sometimes present an arrange- 

 ment somewhat resembling those of Griffithsia, but the arrangement 

 is not perfect or constant, and it appears to us that the species 

 still requires to be better known before it can be said to be well under- 

 stood. 



We have never met with the nonxial form of the species in a living 

 state, but have been amply supplied with specimens from the Isle of 

 Wight and other parts in the south of England. These are abundantly 

 fruited, whilst others which we refer to C. repens are all barren. We 

 cannot take this, however, as an evidence of their being young or im- 

 pei-fectly developed, as they are often much larger than the fruited ones. 

 All our Forfarshire specimens are of the straggling branched variety, and 

 although barren, sometimes reach the length of from two to two and 

 a-half inches ; in these the branching is very straggling and irregular, 

 the branches distant, long, and often quite naked. 



The two forms, therefore, have a very different aspect, and were it not 

 in deference to so high authority, we would strongly suspect that under 

 the present name, it may still be possible that more than one species are 

 included. 



In Forfarshire specimens, the branching is more frequ.ently secund 

 than alternate ; sometimes the whole of the branches arise from one 

 side, at other times two or three alternately, and occasionally they are 

 alternate, but it never happens that all or even one-half of the arti- 

 culations produce ramuli, and very rarely above one in six. These 

 branches are generally simple, but occasionally also they again produce 

 branchlets, short and cylindrical, but nearly of the same diameter as 

 the one from which they spring, the whole frond being of nearly equal 

 thickness throughout. 



It seems to have rather a partiality for Furcellaria fastigiata and 

 Polyides rotunchis, but does not hesitate to attach itself to any other 



