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MON EM A oBTuscM.
Obtuse Monema.
Class and O rd e r CEYPTOGAMIA ALG7E, Linn— S s i . Ord. ALGJE, J uss.
GENERIC c h a r a c t e r .
Fila libera, emtinua, tubulata, eapillaria, granula oblonga vel subeUiptica inelu-
dentia.
Filaments free, continuous, tubular, capillary, containing oblong or subelliptical
granules.
s p e c if ic CHARACTER.
M o n em a obtusum; filis subdichotomis, ramis divaricatis, apiee valde obtusis,
granulis numerosissimis, liiieari-oblongis, geminatis.
M. filaments subdichotomous, tbe brandies divaricated, very obtuse at the
extremity; granules very numerous, linear-oblong, geminate.
G lo io n e m a d ic h o tom um , Grev. FI. Edin. p . 30 1 .
H ah. Parasitic on small Alga: in the sea, in summer. Black Rocks, Leith,
rare.
Plant growing in somewhat small, lax, flaccid tufts, an inch or more in
length, of a yellowish-green colour, and rather fcetid od o u r; about
as thick as a hog’s bristle, branched in a dichotomous manner, the axils
obtuse; branches divaricated, very obtuse at the extremity. Granules
exceedingly numerous, yellow, linear-oblong, geminate (apparently permanently
so). An external membrane is obviously present, b u t it is
perfectly transparent, and the tube is tu rg id with hyaline gelatine, in
which the granules are longitudinally imbedded without any specific
order.
I am by no means convinced that the plant under consideration
may not ultimately prove a variety of Monema Dill-
wyn ii; but if so, the deviation is sufficiently remarkable to deserve
particular attention. The whole plant is more robust,
and apparently very distinct in the obtuse axils of the divaricated
branches, their obtuse termination, and the multitude of
granules. In the only specimens I have found, the tube is sub