/s [ 1739 ]
U L V A compressât
Compressed Laver.
CR YP TO G AMI A A.ïgceé
Gen. Char. Frond membranous or gelatinous. Seeds
solitary, scattered throughout its substance, under
the cuticle.
Spec. Char. Frond tubular, more or less branched, com-
pressed, irregularly constricted, green ; the branches
elongated..
Syn. Ulva compressa. Linn. Sp. PI. 1632. Buds. 5 69 .
With. v. 4. 126. Hull. 311. Relh. 480.
U . marina tenuissima et compressa. R ail Syn. 63.
Tremella marina tenuissima et compressa. D ill. Musc.
48. t. 9, 10./. 8.
Conferva compressa. Roth. C a ta l.fa sc . 1. 161.
C o m m o n on submarine rocks, stones and posts, as well as
in salt-water ditches, and about the mouths of rivers, at all
seasons.
The fronds grow in tufts, and are very slender at the base,
where they are most branched, the branches being greatly enlarged
upwards, tubular but compressed, constricted here and
there without any regularity, ending acutely when perfect, but
most commonly torn at the summit. The colour is green,
the surface smooth and even. No plant varies more hTsize’
breadth, or number of its branches. No fructification has been
observed, therefore it is impossible to say how trtily this is an
Viva. Necker and Roth refer it, and all other tubular Ulvce,
to Conferva, merely because they are tubular. But this is an
unnatural combination; for, whatever the fructification of these
plants maybe, no one can imagine it similar to those Confervas
whose .seeds fill the hollows of their joints; still less can it be
expected to consist of external capsules.