I l m ;
P >
I
Mí. -H
H
^ n rm n T T if
S P H A C E L L A R IA c i r r h o s a , v a r . p a t e n t i s s im a .
Small pinnate Sphacellaria,—horizontal variety.
Class a n d O r d e r CRYPTOGAMIA ALGÆ, Linn— S at. O rd . ALGÆ, Juss:
GENERIC CHARACTER.
Frons filifbrmis, rígida, articúlala, olivácea, ramis distichis vel dichotomis. Spo-
rulæ vel apicibus sphacellatis ramuhrum inclasce, vel in capsulis.
Frond filiform, rigid, jointed, olivaceous, -with distichous or dichotomous
branches. Sporules either included in the sphacellated extremities of
the branches, or in capsules.
SPECIFIC c h a r a c t e r .
• S p h a c e l l a r i a cirrhosa ; Jilis ramosissimis tenuibus striatis, ramis alternis sub-
pinnatis, articulis diámetro oequalibus.—A q a r b h .
S. filaments much branched, slender, striated, the branches alternate, sub-
pinnated, the articulations equal in length and breadth.
S p h a c e l l a r i a c irrh o s a , Ag. Syst. Alg. p . 164,
S p h a c e l l a r i a p e n n a ta , Lyngb. Hyd. Dan. p . 10 5 . t . 3 1 .—Grev. FI, Edin.
p . 31 3 .
S p h a c e l l a r i a reticulata, FI. Dan. t. 1600.—Lyngb. 1. c. p. 106.
C e r am ium c i r rh o s um , Ag. Syn. p . 67.—Hook. FI. Scot. Pt. 2 . p . 86.
C o n f e r v a cirrhosa, Roth, teste Agardh.
C o n f e r v a in t e r te x ta , Roth, Cat. Bot. v . 1. t. 5.
C o n f e r v a p e n n a ta , DiUw. Cmf. t . SQ.— Smith, Engl. Bot. t. 2 3 3 0 . upper and
lower figures.
v a r . /3, Ægagropila, filis in g lo b um im p le x is , Ag.
C o n f e r v a p e n n a ta , FI. Dan. t . 1 4 8 6 . f. 2 .
var. y, minuta, articulis diámetro duplo longioribus, Ag.
var. J, reticulata, ramis reticulato-flexuosis, Ag.
var. s, patentissima, ramulis undique insertis, oppositis, patentissimis.
H a b . On rocks and various small Algæ in the sea. Summer, a. Very
abundant. /3, Shores of the Island of Bute, e. On the same coast.
Fronds in var. e tufted, scarcely more than h a lf an inch in height, slender,
branched in a lax straggling manner, the branches bearing numerous
ramuli inserted on aU sides, and standing out in a horizontal direction.
The ramuli are moreover opposite, and given off by every second articulation.
Under the microscope, the filament is striated, the articulations
about as broad as long ; b u t in the branches, those articulations
which give off ramuli are shorter than the intermediate ones which give
off no ramuli. I have not observed any capsules on this variety.
VOL. VI.
Í
\\ I
h