The English flora - SeaweedAfrica

336 ALGiE CONFERVOIDEiE. [Spyridicl.
set in a double or triple series. Very distinct from the last in
habit and character. A careful examination of original specimens
enables me to refer Dillwyn's tab. G. (C. Arbuscula) which has created so
much perplexity, to the present species, as well as so much of his description
{Spi. Conf. p. 80) as relates to the fruit. His t. 85, however,
with the accompanying description, belongs to Calidhamnion Arbuscula.
61. Ceramium. Adans. Roth. Ceramium.
Filaments articulated, mostly dichotomous, reticulated with
veins : dissepiments opaque. Fruit double ;— 1. capsules with a
membranaceous pericarp, containing numerous angular seeds. 2.
simple oblong granules imbedded in the upper ramuli.— Name,
xzpxfiog, a little pitcher, in allusion to the form of the capsules;
but, as the genus now stands, the resemblance is not striking.
This is the Boryna of French authors.
1. C. rubrum, Ag. (red Ceramium); filaments cartilaginous
reticulated, articulations opaque, dissepiments contracted.
—
Ag. Sp. Alg. v. 2. p. 146.— Conferva rubra, Dilho. Conf. t. 34.
E. Bot. t. 1166.—/S. Ceram. secundatum, Lyngb. Hydroph.
Dan. t. 37.
On rocks and Algae, abundantly.—Very variable in ramification and
colour ; but easily distinguishable by the above characters.
2. C. didphanum, Roth, (variegated Ceramium); filaments
flaccid, articulations hyaline, joints swollen opaque.
Alg. v. 2. p. 150. Conferva diaphana, Dillw. Conf t.
Ag.
38.
Sp.
E.
Bot. t. 1742.
Sea-shore, on various Algse, "never on rocks," Greville, common.—
Less variable than the last, and conspicuous among the Alga? for its
beautifully variegated filaments.
3. C. cilidtum, Ducluz, {spiny Ceramium); filaments rigid
fragile, joints furnished with whorled or solitary prickles.
Ag. Sp. Alg. v. 2. p. 153. Conferva ciliata, Dillw. Conf t. 53.
E. Bot. t. 2428 ]8. acanthonotmn, (Carm 31SS.) ciliae uni-
lateral, solitary on the outer side of the articulations.
On rocks, corallines, &c, common.— ft Appin, Capt. Carmichael.
Dunmore, near Waterford, Miss Anne Taylor.—A variable plant, but
distinguished from either of the former by its rigid and fragile filaments,
which, as Mr. Sconce well observes, " break in the hand, as if the joints
separated like those of an Equisetum."
62. Spyridia. Harv. Spyridia.
Main filaments inarticulate, cartilaginous, beset with articulated
ramuli; dissepiments opaque. Fructification;— 1. trisporous
capsules with hyaline pericarps clustered round the bases of the
ramuli: 2. pedunculated gelatinous receptacles with membranaceous
pericarps, often surrounded by an involucre of short ramuli,
containing two or three masses of roundish granules.—
—