I )
1 4 4 SIPHOl'HYCBAI.
directed one way, which gives the plant a peculiar clustered or tuftlike
aspect. Articulations at least five times longer than they are broad.”
—Eng. Bot.
Plate LVI. fig. 1. Portion of apex of thread slightly enlarged. Pig.
2, portion of branch X 100. Fig. 3, tip of branch with zoogonidia X 200
diam. Fig. 4, zoogonidia X 320.
Cladophora fla v e sc en s . Ag. Sgst. p. 112.
Pale yellowish, six inches long, very much branched, fasciculate
in a plumose manner, branches patent, ultimate branchlets
often rather clavate, patent or incurved, cell-membrane often
distinctly plicate, cell contents distributed in a reticulate manner.
S i z e . Diameter of branches -07--08 mm., 6-12 times as long.
Cladophora glomerata, \ . flavescens, Rabh. Alg. Eur. iii., 342.
Cladophora flavida, Kntz. Sp. Alg., p. 402.
Conferva flavescens, Eng. Fl, v., p. 356. Dillw. Conf. Supp.,
t. E. Harv. Man. 133. Eng. Bot. i., t. 2088 ; ii., t. 2493 ;
W y att Alg. Danm., No. 224. Mack. Hib. 227. Gray Arr.
i., 304.
Conferva pinnatida, Dillw. Conf., t. 95.
In ditches or pools of brackish or fresh water.
“ This species grows in continuous tufts, which, as they rise to the snrfaoe,
form extensive floating strata covering the pool. Filaments slender,
capillary, tangled together, irregularly branched ; the main thread somewhat
dichotomous, with widely spreading axils, and often bent iu an
angular manner first to one side then to the other ; the lateral branches
alternately divided, patent, with a few distant, scattered, alternate, or
secund ramuli. Articulations cylindrical, many times longer than broad,
filled with a pale, granular endochrome. Colour when young, a yellowish
green, becoming yellower in age, and at last almost golden. When dry
it has a silky appearance, and fades in the herbarium to a yellowish
white. Substance soft, membranous, but not strongly adhering to
paper.”—Jiaruei/.
Besides its pale green colour it is readily distinguished from 0. fracta
by the much longer articulations, and their less granular contents.
Plate LV. fig. 5. Upper portion of filament of Cladophorafiaves-
cens X 10. Fig. 6, portion of filament with fertile terminal cell X 100.
Fig, 7, apex of terminal cells, with zoogonidia escaping X 200.
Cladophora c a n a licu la r is. {Roth.) Kutz. Sp. 409.
Dichotomously or trichotomonsly branched, branches connate
a t the base, often fasciculately branched above as in G. glomerata.
Fructiferous cells terminal. Cell-membrane often thick,
now and then swollen. Cell contents arranged in very lax spirals.
S i z e . L o w e r b r a n c h e s ■0 8 -’1 2 m m ., 4 - 8 t im e s a s lo n g .
Rabh. Alg Eu r. iii., 342.
Alga in tubules aquam fontanam deduoentibus, Dill. Muse.,
t. 4, f. 15.
Conferva canaliciilai'is, Sihth. Ox., HS6. Hall Br. FL, 831.
Abbot F l. Bedf. 274. With. Arr. iv., 129. Relh. Cant.
443. Huds. FL Angl. 593. Purton Midi. FL ii., 610.
In ditches, pools, and other standing water.
Articulations fonr to eight times as long as their diameter, usually
bright green.
Plate LV I. Jig- Part of branch of C. canalicularis X 100 diani.
C lad o p h o ra eeg ag ro p ila . (Linn.) Kutz. Tab. in .
Dark green, threads rigid, very much branched, radiating
from a common centre, at length agglomerated into a very
dense spongy globe. Ramuli erect, often quite obtuse, artioula
tions sometimes incrassated upwards, cell contents not arranged
in spirals, cell-membrane now and then thickened
S^ZB. Branches -OI-'OI diam, 2-4 or even 12 times as long.
Eabh. Alg. Eu r. iii., 343. _ n r i Pmd
Conferva ceqaqropila, Linn. Dillw. Conf., t. 8i . P u it.
Mid Fl i h , p . l7 5 Eng. Bot. ii., 1377 ; ii., 2496. Harv.
Man 134 Eng. Fl. v „ 357. Huds. Fl. Ang. ii., 6 0 4 . Mack,
m b 228 Br. Fl. 332. Hook. F l. Scot. u., 82.
Trans. Roy. Soc. xii., 498.
Conferva cegagropilaris. Gray Arr. i., 308. _
Cladophora glomerata, Hass. Alg., p. 213 in part.
var. B row n ii (Dillm.).
Rabh. Alg. Eur. ill., 345.
Conferva B rownii, Dillw. Conf, Syn t, n Harv. Man 134
Eng. PL V., 356. Wyatt Alg. Dan., No. 225. Mack. Fl. Hib.
228. Eng. Bot. 2879.
“ This singular vegetable production is a native of Alpine lakes in many
narts S L ro p e , often lying in great abundance at the bottom of the
oter and occasionally only rising and floating on the suiface. I t baa
been found in tr eU X sU f the norfh of England, Wales, Scotland, and
the d S of Connemara in Ireland, but is generally esteemed rare. In
X e u X t e s from that of a small pea to three or four inches m dia-
meter and its form is always nearly spherical. Iffiernally the largei
!SeciUen7 are hollow without any nucleus, and when examined their
substance is found to consist of innumerable green, pellucid, repeated^
substance is ion entangled together. The vesicles, when the
X X t recently t e X from X are turgid with fluid and nearly
cylindrical, being slightly swollen
rnn+fpr nf the endochrome seems chiefly collected as a green opaque
Z s s in the teiminal vesicle, however, of each branch ii assumes often
“ dark b rX n hue and more solidity, probably becoming the medium of
X r X c t X and escaping in the form of sporules. The elasticity of
the balls may be estimated by the tact of their having been used as penwipers
in the north of England.—Fri£(. Bot. ib i.
Plate LVI. fig. 6. Threads of C. agagropila, nat. size. Fig. 7, portion
of upper branch X 100 diam.