Bibliographic Detail
Archer, W., 1868
Reference:
Archer, W. (1868). [Proceedings of Societies: Dublin Microscopical Club: 21st May, 1868]. Quarterly Journal of Microscopical Science, New Series 8: 293.
Notes:
There was also shown the zygospore of a minute species of
Cosmarium, close to C. hioculatum on the one hand, and to G. tinctum
on the other ; this is globular and smootli, and quite destitute
of spines, and apparently very large in proportion to the dimensions
of the parent forms. The segments of this species are elliptic
and smooth, constriction deep, end view elliptic. But irrespective
of dimensions and genei'al contour giving quite a different impression
to the eye, this form is distinguished from C. hioculatum,
inasmuch as the zygospore of that species has spines. "Whilst,
indeed, that of G. tinctum is wathout spines, the present plant in
itself is a good deal larger, and wants the reddish colour so characteristic
in that species. In its smooth zygospore it agrees with
G. pygmceum (Arch.), but it is quite distinguished therefrom by
the elliptic, not sub-quadrilateral, segments. He would name this
marked little species now exhibited Cosmarium tenue.
