M í
i l ti
-A
«I í ii
( Ji'l
-360
Z O N A R IA PARVULA.
Small Zonaria.
Class and O rd e r CRYPTOGAMIA ALGÆ, £ í™ .-N a x . Ord. ALGÆ, Jms.
De Cartd.
g e n e r i c c h a r a c t e r .
Frons fiabelliformis vel dichotoma, ecostata, submembranacea, e Jibris paral-
lelis constituta, lineis fructiferis (pkrumque) transversis; capsuloe m sons
coacervata.—A g .
Frond flabeUiform or dichotomous, ribless, submembranaceous, composed
of parallel fibres, the lines of fructification (mostly) transverse; capsules
collected into sori.
S P E C IF IC CHARACTER.
ZoNARiA parvula ;/rowde olivácea, suborbkulari, plana, membranacea, profunde
lobata, hbis orbicularibus, suhimbricatis, vix zonatis.
I . frond olivaceous, suborbicular, plane, membranaceous, deeply lobed, the
lobes round, somewhat imbricated, scarcely zoned.
H ab. In th e s e a ; a tta ch ed to sandstone rocks n e a r S idm outh in Devons
h ire ; March.
Frond olivaceous, closely attached to the rock, membranaceous, the surface
lubricous, about an inch or an inch and a h a lf in breadth, the outline
suborbicular, b u t the plant made up of several round or reniform lobes,
which are not unfrequently imbricated. The lobes are quite entire,
tWn, and somewhat transparent at the margin, where they are also of a
paler colour; beneath they are furnished towards the centre with a
short, white, radicular pubescence.
! | ( I,
Mi,
tl
I il
■f
V r
Among the few specimens I observed of this plant, I could
find no trace of any fructification; and it is very probable it
might not have arrived at perfect maturity, though it had the
appearance of full size, and its microscopical structure seemed
well developed. It appears to have been unobserved hitherto;
and my chief object in publishing a figure of it in its present
iH
I
■ i- i'i