with branches 10-12-14 iuches in length; stem and branches not thicker than hog’s-bristle. Throughout the entire
length of the branches innumerable receptacles stand out, Uke spines, at right-angles with the branch. They are
perfectly sessile, about 1 -2 lines in length, cylindrical, but tapering slightly to the suhacnte apex, so as sometimes
to be nearly subulate. In the varieties of S. comosns the tapering is in the opposite dii’cction—to the base.
Gen. XVI. BELLOTIA, Harv.
(Harv. in Tayl. Ann. Nat. Hist. 1855, p. 332.)
Frons filiformis, solida, urabellatim ramosa, apicibus x-amorum fasciculato-comosis. Receptaculum
in quoque ramo unicum, cylindraceum, mediam partem rami circumvestiens, e paranematibus simplicibus
verticalibus dense stipatis coustitutum. Spora ad paranemata lateraliter dispositæ, oblongæ, transversim
striatæ.
1. B e lló tía E r io p h om m (Harv. Au. Nat. Hist. (1855), sv. p. 332). (Tab. CLXXXVII.)
Hab. Georgetown, rare, Eenty, Gunn. Derwent (a fragment), Oldfield.
D i s t r ib . Port Phillip and Western Port, Victoria, TF. H. S .
Root clothed with velvety fibres. Stems many from the same base, 1-2 feet long, twice as thick as hog’s-
bristle, terete, rigid, somewhat honiy, twice or thrice umbellately compounded. Umbels of ten to twenty or
tbiity rays or more, from 3-4 or 5 inches apart ; the bases of all the rays tomentose, the rest bare and quite
smooth. Apices of all the branches crowned with a very dense spherical tuft of brown filaments, from 4 - f of an
inch iu diameter. Receptacle cyhndrieal, developed round each branch in its middle or upper portion, aud fomed
of very densely-packed, simple filaments {paranemata), vertically issuing from all sides of the branch, and whoried
round it. This receptacle begins to be formed on the upper half of all the young branches above the middle, and
extends, at first, nearly to the commencement of the apical tuft ; but as the growth continues, the barren portion
of the branch above the receptacle considerably elongates, and the receptacle, in a full-grown bi-anch, is removed to
nearly the middle region, where it forms a sausage-shaped swelling nearly two inches in length and thrice the
diameter of the barren part of the branches. The paranemata are quite simple, articulated, cylindrical, their cells
three or four times as long as broad, filled with pale-olive endochrome. Spores linear-oblong, sessile on both sides
of the paranemata, alternate or secund. Substance of the stem and branches rigid ; of the apical tufts soft, and
when young somewhat gelatinous. A cross-cutting of the stem shows a firraly-cellular substance composed of
minute polygonal cells, set in lines radiating from a central point.
The fertile portion of the branches varies considerably in length in different specimens. In some the receptacle
is developed only in a minute degree, in others it extends nearly the full length of the branch. The generic name
is bestowed in honour of Lieut. Bellot, of the French Navy, who was lost in one of the Searching Expeditions for
Sir J. Franklin. I t differs remarkably in ramification and habit from others of this order.—P la t e CLXXXVII.
Fig. 1, the plant, the natural size; 2, cross section through a receptacle; 3, spore-threads from the same:—both
figures magnified.
Gen. XVII. CAEPOMITEA, Küts.
(Kütz. Phyc. Gen. p. 343 ; Sp. Alg. p. 569 ; J. Ag. Sp. Alg. i. p. 177.)
1. C a rp om itr a C a b re ræ (Kütz. Phyc. p. 343 ; Harv. Phyc. Brit. 1 .14 ; J . Ag. Sp. Alg. i. p. 177).
—Fucus Cabreræ, Clem.; Turn. Hist. Fuc. t. 140.
H a b . Port Arthur, W. E . If.
D i s t r ib . South and east coasts of New Holland. New Zealand. Coasts of Spain. South of England
and Ireland.
2. Carpomitra ine rmis (Kiitz. Phyc. p. 343; Harv. in Lond. Journ. Bot. vi. p. 4 1 5 ; J . Ag.
Sp. Alg. i. p. 178).—Fucus incrmia, R . Br. in Turn. E is t. t. 186.
Hab. Sent by Mr. Gunn.
D i s t r ib . South coast of New Holland.
3. Carpomitra siliq uo sa (J. Ag. Sp. Alg. i. p. 178).
Hab. Tasmania, Baume in Mus. Par. (Unknown to us.)
Gen. X V III. NEBEIA, Zamard.
(Dub. et Softer. Mem. Cour. p. 57. t. 16. Sporochni sp., J. Ag. Sp. Alg. i. p. 175.)
1. N e r e ia au stra lis (Harv.); fronde elata filiformi cartilaginea solida decomposite ramosissima,
ramis ramulisque alternis sparsisve quoquoversum egredientibus junioribus apice comosis, ramis minoribus
suberectis basi angustatis acutis, ramulis setaceis, axillis omnibus acutis, verrucis (receptaculis) elevato-
conicis apice comosis demum nudis ex fiiis ramosis sporas oblongas gerentibus constitutis.— Stilophora ?
australis, Harv. in Lond. Joum. Bot. iii.7?. 4 5 3 ; J. Ag. Sp. Alg. i.p . 8 6 ; Earv. Alg. Exsic. Aust. n. 60.
(Tab. CLXXXVIII.)
Hab. Georgetown, Gunn, T F .E .E .
D i s t r ib . Port Phillip, Victoria.
Frond 1-2 feet long, excessively branched and bushy. Stem undivided, 14 line in diameter below, attenuated
to the thickness of a bristle above, cartilaginous, solid, witb a densely cellular axis, set thi-oughout with lateral
brandies, which issue in-egiilarly, and are directed towards aft sides. Each branch is a repetition of the stem on a
smaller scale, and is again and again decompound. Ail the tips are acute, and crowned when young with a tuft of
confervoid fibres. Tlie smaller branches taper to the base, and ai-e more or less furnished with minute setaceous
ramuli, each crowned ivith filaments. The warilike receptacles ai-e densely scattered over the whole frond, and when
young bears a tuft of filaments, as iu Sporochnus.—P la t e CLXXXVIII. Fig. 1, a frond, nat. size; 2, fimstule of a
branch, with two setaceous ramuli; 3, longitudinal semisection of a branch; 4, a wartlike receptacle; 5, spore-
threads and spores ft-om the same :—the latter figui-es variously magnified.
T r ib e I I I . LAMINARIACEJ5.
Gen. XIX. MACROCYSTIS, Ag.
(Ag. in Act. Leop. xix. 1. p. 281. J. Ag. Sp. Alg. i. p. 153. Kütz. Sp. Alg. p. 582.)
1. Ma c ro cy stis p yrifera (Hook. fil. et Harv. Fl. Antarct. i. p. 177, ii. p. 4 6 1 ; Fi. N. Zeal. ii.
p. 217).—Macrocystidis omnes sp., J. Ag. Sp. Alg. i. pp. 155-158 {excl. M. obtusa); Kütz. Sp. Alg.pp.
582-584. Fucus pyriferus. Turn. t. 110.
I I a b . All round tbe coast.
D i s t r ib . South coast of New Holland, New Zealand, west coast of North and South America, and
specially in the great Southern Ocean.
Gen. XX. ECKLONIA, Eornem.
(Horncin. ill Dausk. Vid. Sb-ift. iii. p. 370. J. Ag. Sp. Alg. i. p. 144. Kütz. Sp. Alg. p. 586. Capea, Xioui.
Ann. Sc. Nat. 1840.)
1. E ck lon ia radiata (J. Ag. Sp. Alg. i. p. 146).—Capea radiata, Endl. 3rd Suppl.p. 2 7 ; Kiitz.
Sp. A lg .p . 578. Fucus radiatus. Turn. Hist. t. 134. Ecklonia exasperata, J. Ag. I. c. Capea birunci-
nata, Mont. Canar.p. 140. /. 7.
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