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B. Tufts for the whole life attached.
o. Cell contents disposed In lax spirals.
t Fruiting cells terminal or subterminal.
* Cell-membrane even.
0. Branches connate
at the base . . . . canalicularis.
00. Branches not connate
at the b a s e .......................glomemta.
** Cell-membrane plicate . . . . flavescens.
II. Threads radiating from a common centre, aggregated in a more or
less spongy globe ...............................................................mgagropila.
Cladophoz a f r a c ta . {'DilVic.') Kutz. Sp. Alg., p. 410.
Branches and branchlets sparse, divaricate, here and there
refracted, often secund, the lower laterally inserted. Cell
contents of the branches not spirally arranged, cell-membrane
now and then very thick. Fructiferous cells not terminal,
often in the middle of the branches or at their base.
S iz e . Threads T mm. diam.
Kutz. Tab. iii., t. 50. Eabh. Alg. E u r. iii., 334. Jenner
Fl. Tunb. Wells 186. Harv. Man. 134.
Conferva fracta, Eng. Fl. v. 356. Johns. Fl. Berw. ii., 254.
Eng. Bot. i., t, 2338, ii., t. 2492. Dillw. Conf., t. 14. Lyngb.
Hydr. Dan. t., 52. Grev. Fl. Ed. 318. Hook. Fl. Soot, ii., 82.
Mack Hib. 227. Fl. Devon ii„ 52. Gray Arr. i., 304.
Conferva vagabunda, Huds. Fl. Ang. ii., 601. Lightf. Fl.
Scot. 990. W ith Arr. iv., 189.
Conferva marina trichoides, lance instar expansa, Eay. Syn.
60. Dillen. Muse. 30, t. 5, f. 32.
Cladophora cm /a te , Hass. Alg. 216.
In fresh and brackish water.
“ At first forming loose tufts, which frequently beoome detached, and
the plant is more commonly found constituting floating strata, many
tufts entangled together in each floating mass. Filaments capillary
from six to eight or ten inches long, much, but very irregularly branched,
the branches distant, spreading at wide angles, or much divaricated,
either dichotomous or alternate, the lesser branches repeatedly forked,
with wide axils, and (he ramuli which are few and very patent, commonly
secund, sometimes alternate. Articulations three or four times
as long as broad, rarely six times as long, those of the upper branches
pretty uniformly thrice as long as their diameter, at first cylindrical,
then becoming pyriform, and when mature elliptical, when the branches
resemble strings of dark green beads. Dissepiments finally much contracted.
Colour at first a pleasant grass green, becoming darker and
duller as the plant advances in age. The endochrome is at first fluid,
but in the full grown articulations (which are in fact changed into
sporangia) it becomes distinctly granular, very dense, and of a dark
colour. In drying the plant adheres to paper, but not very firmly.”—
Harveg.
Plate LV. fig. I. Upper portion of filament of Cladophora fracta X
10 Fig. 2, portion, with fertile cell X 100 diam.
C lad o p h o ra c r is p a ta . (Roth.) Kutz. Tab iv., t. 40, /. 1.
Less coloured than the preceding, now and then dark green,
sometimes colonrless ; branches and branchlets remote, sometimes
secund, insertion (at least of the lower branches) apical,
articulations collapsing, cell contents (a t least of the upper
branches) disposed in a lax spiral. Cell-membrane delicately
plicate-striate. , . , , i
S iz e . Primary branches -022 mm. thick, ultimate branches
less than half th a t diameter, main thread -12 mm. diam.
Eabh. Alg. Eur. iii., 337.
Conferva crispata, Dillw. Conf. t. 93. Eng. Fl. v., 356.
Eng. Bot. i., t. 2350. Harv. Man. 133. Gray Arr. i„ 304.
Eng. Bot. ii., t. 2420.
In pools.
“ Filaments about a foot long, or more, densely entangled, rather
tough, destitute of gloss, curled and c r i s p e d , especially when oM.
Articulations 4 or 5 times as long as broad ; by drying they become
elliptical and compressed alternately
Plate ZV. fig. 3. Upper portion of filament of Cladophora crispata
X 10, Fig. 4, small portion of sterile thread X 100 diam.
Clad o p h o ra g lom e r a ta . (Linn.) Kutz. Tab. Phyc. iv.
Branches in th e upper part of the primary thread, and
branchlets of the second and third order, usually fasoioulate or
penicellate. The cell contents of the larger cells applied m a
net-like or somewhat spiral manner to the walls. Fructiferous
cells always terminal, with th e lower cells sterile.
S iz e , Primary and secondary branches to '06 mm. diam.
3 to 6 times as long. „ r n •, oo
Eabh. Alg. Eur. iii., 839. Jenner Fl. Tunb Wells 186
Conferva glomerata, Linn. Eng. Fl. v., 306. Lightf. Fl. Scot.
993. Dillw. Conf., t. 18. Huds. Fl. Ang. ii., 602. Eng.
Bot. i., t. 2192, ii., t. 2494. Harv. Man 134. P u rt Mid.
F l.ii.,6 1 0 . Johnst. Fl. Berw. n., 25o. Grey Fl. Ed. 318.
Hook. Fl. Scot. ii., 82. Sibth. Ox. 337. Abbot. Fl. Bedf.
875. W ith Arr. iv., 140. Gray Arr. i., 306. Hass. Alg.
213, t. 56,57, f. 1-2. , , d q
Conferva fontinalis ramosissima glomeratim congesta, Eay byn.
59. Dillen. Muse. 28, t. 5, f. 31, A. B.
Microspora glomerata, Hass. Ann. Nat. Hist. xi.
In clear streams and rivulets, usually attached to stones.
“ The whole plant is of a bright, shining green, very smooth, but not at
all viscid or gdatinous to the touch. The principal stems are several
inches long, sending out numerous capillary branches, which are variously
subdivided, and terminate ultimately in ranges of little short ramuli all
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