f i ài »
i :
m t ì
L i
Mi; ' ¡:
:
I l ili
ili. ■
i r
i l
;l '
M O N EM A D i l l w y n i i .
Dìllwyris Monema.
C l a s s a n d O r d e r CRYPTOGAMIA ALGÆ, £ m r e .— N a t . O r d . ALGJE, J uss.
GENERIC CHARACTER.
Fila libera, continua, tubulata, capillaria, granula oblonga vel subelliptica in-
Filaments free, continuous, tubular, capillary, containing oblong or subelliptical
granules.
SPECIFIC character.
M onema Dillwynii ; Jilis olivaceis, dichotome ramosis apice attenuatis, acutis,
granulis lineari-oblongis, linea longitudinali notatis, -numerosis, sine ordine
M. filaments olivaceous, dichotomously branched, attenuated and acute at
the apex ; th e granules linear-oblong, marked with a longitudinal line,
numerous, disposed in no particular order.
Schizonema Dillwynii, Ag. Syst. Alg. p. 10. ?
Conferva foetida, Dillw. Conf. t. 104.?—Jurg. Alg. fasc. 10. No. 8.
Hab. On small stones, and various small Algse, in the sea. Appin, Captain
Carmichael. F rith of Forth.
Plant growing in dense tufts, about two inches in length, of an olive or
olive-green colour, and frequently of a foetid odour. Filaments flaccid,
more or less branched in a dichotomous manner, slender, attenuated
towards the extremity, acute ; the external membrane evident, somewhat
tenacious, pellucid. Cranules numerous, linear-ohlong, marked
from end to end with either a line or furrow : they are of a g reen colour,
and arranged longitudinally within the filaments, b u t in no regular order.
Sometimes, according to Captain Carmichael, the filaments are
opaque and fuscous-
I have already alluded to the confusion which exists among
the species o f this genns. A g a r d h himself, who has not had
the advantage of examining some of them in a recent state, observes,
“ In hoc genere quid species sit, certe nondum constat.
Ideo synonyma pro distinctis separavi distinguere malim quam
297