VAUCHERIA SUBMARINA, Berk.
V a u c h e r i a submarina ; “ forked fastigiate threads ; coniooystse (sporangia)
numerous, lanceolate and ovate, confined to the upper branches.”
Berkeley.
Vaucheria submarina, Ba'k. Gl. Br. Alg. p. 24. t. 8. Hook. Br. M. vol. ii.
p. 319. Hook. Man. ed. 1. p. 147. ed. 2. p. 195.
Vaucheria dichotoma, /3. submarina, Ag. Syst. Alg. p. 171. Sp. Alg. vol. i,
p. 460. Byngh. Hyd. Ban. p. 76. t. 20. A. Grev. Alg. Brit. p. 190.
H a b . On the muddy sea-sliore.
Weymouth, Eev. M . -I.
G eo g e . D is tk . North Sea.
De sc r . “ Plant growing in dense fastigiate masses in muddy spots covered by
the sea every tide. Threads far slenderer than in Vaucheria dichotoma,
stained below by the mud, above dark green, forked ; the hranclilets generally
somewhat strangulated just above their insertion ; the main stem clothed,
above the part where the branchlet is given off, with numerous, almost
. sessile, more or less ovate or lanceolate coniocystm, wliich are pointed, at
first entirely green, but eventually with a pellucid border. One single
instance occurred, in which the fru it consisted of two, placed end to end.”
Berk. I. c.
I am only acquainted with this species through Mr. Berkeley’s
description and figure, both of which I have here, with his permission,
made use of.
-S. Fig. 1. ' Tuft of Vaucheria SUBMARINA :—the natural size. 2. Filaments
in fruit:—magnified. 3. A portion of a filament with sporangia:—more
highly magnified ; both copied from Mr. Berkeley’s plate.