[ 1610 ] S'.?
CONFERVA bipunctata.
Double-dotted Conferva.
CRYPTOGAMIA Alga.
Gen, Char. Seeds produced in round, solitary, closed
tubercles, projecting from the frond, but united
with it.
Spec. Char. Green. Filaments unbranched, slippery,
cylindrical. Joints rather longer than broad, each
double-dotted.
Syn. Conferva bipunctata. Roth. Catalect. v. 2. 204.
Dillw. Conf. t. 2.
N o t uncommon in stagnant waters. Mr. Turner has several
times shown it to us at Yarmouth. These specimens were
collected in Tothill fields by Mr. Sowerby in September ] 802.
It is found, as Mr. Dillwyn observes, “ either floating in
thick masses on the surface, or loose and straggling at the
bottom of the water.” The colour of the whole mass is a
more or less yellowish green. The filaments are several
inches long, capillary, slender, slippery and rather tender,
unbranched, of an equal thickness throughout, scarcely at all
contracted at the union of the joints. Each joint is rather
longer than broad, pellucid, marked in its central part with
two dots or masses of a green substance, which in some
stages of growth are confluent. These double dots well
characterize the species.