The English flora - SeaweedAfrica

334 ALG.E CONFERVOIDEiE. [Dasya.
21. P. elongella, {small Lobster-horn Polysiphonia) ; filaments
cartilaginous subdichotomous, axils patent, ramuli flaccid sub-
fasciculate elongated not tapered at the base, articulations of
the branches as long as broad marked with three parallel veins.
At Sidmouth, Mrs. Griffiths and Miss Cutler.—Filaments 2—3 inches
high, in the lower part cartilaginous and as thick as hog's bristles, attenuated
upwards to a capillary fineness ; main branches subdistant,
very patent or divaricated, ramuli rather crowded, in some plants peni-
— ;
cellate, straight, dichotomous, slightly tapering towards the apex, not at
all so towards the base : axils patent. Articulations visible in all the
main branches, obscure near the root : veins all parallel. Colour below
brownish, on the upper part rose-red. Capsules large, broadly ovate,
sessile or shortly pedunculate, scattered on the upper rarnuli, containing
a tuft of pyriform seeds. Granules in distorted ramuli also occur. The
capsules are extremely rare. To the naked eye this species precisely
resembles a small specimen of P. ehngata ;
two are seen to be abundantly different.
but under the microscope the
22. P. byssoides, Grev. (byssoid Polysiphonia); filaments
cartilaginous, branches decomposito-pinnate alternate patent
crowded, ramuli capillary multifid single-tubed byssoid, articu-
lations of the stem 3—4-striate 2—4 times as long as broad.
Hut-
Conferva byssoides, E. Bot.t. 547. Dillw. Conf. t. 58.
chinsia byssoides, Ag. Sp. Alg. v. 2. p. 99.
South and east of England, and easl of Ireland, abundantly : very
rare in Scotland or west of Ireland. Firth of Forth, Dr. Richardson.—
A beautiful species, of a fine red colour, which, however, fades to dull
brown in the herbarium ; easily distinguished by the delicate, singletubed,
dichotomous fibres, which thickly clothe each joint of the penultimate
branchlets.
23. V . fibrill'osa, (fihrillose Polysiphonia); "filaments much
branched veiny red, branches and ramuli scattered, the ultimate
short multifid fibrilliform, lower articulations long upper short."
Dillw. Syn. Conf. p. 86. t. G.—Hutchinsiafibrillosa, Ag. Sp. Alg.
v. 2. p. 78.
At Brighton and Shoreham, Mr. Borrer. At Seaton, Mrs. Griffiths.
Bantry Bay, Miss Hutchins.—This I have never seen in a recent state
but Mr. Borrer, its discoverer, makes the following remarks from fresh
specimens.— " Very nearly allied to Conferva byssoides, but diffusely and
irregularly branched, the main stem and primary branches as thick as
in C. rubra ; the joints of the secondary branches rather shorter in proportion
to their diameter ; capsules mostly on short stalks. The ultimate
ramuli are very fine and tufted, like those of that species ; but less
numerous,more repeatedly dichotomous and less elongated at the points.
Substance of the whole plant remarkably fragile, tender and subgelatinous.
Colour pale rose-red, with a brownish tinge, becoming much
darker in drying and in decay."— (Borr. MS.)
60. Dasya. Ag. Dasya.
Main filaments inarticulate, cartilaginous, beset with articulated
penicellate or pinnate ramuli. Fructification double :— 1.
conico-acuminate capsules, furnished with a terminal pore : 2.
—