Ser. CHLOROSPERME. Fam. Confervee. 
Piate CCCLIV. 2. 
CONFERVA ARENICOLA, Berd. 
Gen. Cuar. Filaments green, attached or floating, unbranched, composed 
of a single series of cells or articulations. Jruit, aggregated gra- 
nules or zoospores, contained in the articulations, and having, at 
some period, a proper ciliary motion. Conrerva (Plin.),—from 
conferruminare, to consolidate; because some of the species were 
used by the ancients for binding up fractured limbs. ; 
ConFervA arenicola; “threads soft, simple, extremely fine, matted, some- 
what crisped, at first uniform pale green, at length distinctly jointed ; 
articulations once and half as long as broad, dotted ; interstices pel- 
lucid.” — Berk. 
ConFerva arenicola, Berk. Gl. Br. Alg. p. 36. t. 13. f.3. Harv. Man. ed. 
1. p. 128. ed. 2. p. 207. 
Has. Salt marshes, within reach of the tide, Rev. IW. J. Berkeley. 
Deseor. “Creeping on the sandy margins of pools ina salt marsh periodically 
flooded, forming a thin, soft, delicate, crisped web of a pale yellow-green. 
Threads extremely slender, flexuous, at first self-coloured with a few scat- 
tered dots, then with manifest dissepiments, and finally the granules contract 
and form a distinctly defined mass of a darker green in the centre, with pel- 
lucid interstices. Articulations 1} as long as broad. When dry the arti- 
culations are alternately contracted.” —Ber’. 1. c. 
Penn nnn 
I am indebted to Mr. Berkeley, from whose ‘ Gleanings’ I copy 
the above account, fora loan of the original specimen from 
which his description was prepared. This I have used in 
preparing the magnified portion of the figure. Except in colour, 
this plant bears a close resemblance to C.implexa. [am not 
aware that it has been noticed more than once. 
A, Fig. 1. Web of CoNFERVA ARENICOLA, as presented to the naked eye. 
2. Filaments from the same :—/ighly magnified. 
