Mycinema] ALGiE CONFERVOIDEiE. 379 



1. B. torulosa, Cam), (torulose Belonia.) 



On decaying marine Algae, about half-tide level, Captain Carmichael. — 

 " In the beginning of autumn, vast quantities of the filamentous Algae 

 (Dictyo.'iphcn, Ecfocarjju^&c) are detached from their places of growth 

 and deposited here and there along the shore in extensive fleeces. When 

 these fleeces begin to decay, the Belonia makes its appearance in the 

 form of a very thin gelatinous pellicle of a vivid-green colour, spreading 

 over the surface of the decaying mass. The pellicle is made up of 

 straight, brittle, slightly moniliform filaments, one-fourth of a line in 

 length and tapering at both ends. The intervals between the striae, are 

 considerably longer than their diameter, and the green matter becomes 

 at length consolidated into elliptical sporidia, of a brownish colour, be- 

 ginning at the middle of the filament." Carm. HISS. 



Tribe XVIII. Byssoide^. 



Plants of doubtful affinity, related to the Fungi. Filaments 

 articulated, hyaline or coloured. Fructification ; granules scat- 

 tered among the filament's, or capsules. — Found on rotten wood, 

 among mosses, on the ground, on glass, or in chemical solutions ; 

 a few inhabit fresh-water, and one or tiro the sea. 



78. Bys^ocladicm. Ag. Byssocladium. 



Filaments arachnoid, radiating from a centre, with scattered 

 external granules. — Name, 8vffffo;, a kind offioigus, and z,).udoc, 

 a branch. 



J. \$. fenestrate, Ag. (Window Byssocladium). Ag. Syst.Alg. 

 p. 31. — Conferva fenestralis, Dillw. Conf. t. 94. 



On windows and damp glass, where it forms orbicular whitish spo'.s. 



79. Mycinema. Ag. Mycinema, 



Filaments membranaceous, opaque, tenacious, coloured. — 

 Name, /sm/kjjj, bjungus, and nyt«, atlwcad. — Decumbent, cobweb- 

 like plants, growing on rotten wood; probably only imperfect 



fungi. 



1. M. arachnoideum, Ag. (cobweb Mycinema}; filaments 

 biauchrd Blender pale-yellow laxly interwoven into an arach- 

 noid membrane, branches scattered remote simple, articulations 

 variable about four times a- long a- bread. — Ag. Syst. Alg. 

 p. :j L >. — Conferva arachnoidea, Dillw. Conf. t. < . 



On rotten wood. 



2. M. (nlnt, a. Ag-. (tawny Mycinema); filament! decumbent 

 elongated membranous equal branched. Loosely interwoven into a 

 ■oft expanded tawny stratum, articulation! thrice as lei, 

 broad.— Jy. SytL Alg. j>. 3d. laudoux BncycL N. 15061. 



On dead trees, but 1 do not snow where found. 

 :;. M. rvbigindium, Ag. (rad Mycinema); filaments much 

 branched rigid inhered reddish infc rwoven iatoa snhaolid mass. 



