T r ib e 3. WRANGELIACEÆ.
Gen. LV III. WEANGELIA, Ag.
(Ag. Sp. Alg. ii. p. 136. Eudl. 3rd Suppl. p. 35. Kütz. Sp, Alg. 664. J, Ag. Sp. Alg. ii. p. 703.)
1. W r a n g e l i a p lum o sa (Harv. Lond. Journ. Bot. iii. p. 4 5 0 ; Kütz. S]). Alg. 66-1; J . Ag. Sp.
Alg. ii. p. 706).
H a b . Tidal rocks, in rock-pools, very abundant.
D i s t r ib . Port Phillip and Western Port, etc., W. H. II.
2. W ra n g e lia n o b ilis (Hook. fil. et Harv. in Lond. Journ. Bot. iii. p. 411 ; Kütz. Sp. Alg. p. 665 ;
J . Ag. Sp. Alg. ii. p. 709). Griffithsia (Halurus) radiciformis. Rook. ftl. et Ilarv. I. c. ; Kiitz. Sp. Alg.
p . 663 ; I . Ag. Sp. Alg. ii. p . 91 {the winter and fructiferous state).
H a b . Common at and above Georgetowu.
The siunmer and winter states of this beautiful species are so dissimilai- that, when first we received specimens
from Mr. Gunn, we described them under two different genera, founding our W. noUlis on the summer form, and
our Griffithsia radiciformis on the «ónter oue, aud in this error we have been followed by Agardh and Kützing.
Extended observations on the Uving plant, and the possession of multitudes of specimens in eveiy intcmediate
stage, have now demonstrated to us the identity of the supposed two species, and the discovery of both kinds of fruit
confirms the position in Wrangelia of the united fonns. In the young or summer state all the younger parts of the
froud are clothed with very delicate rosy-red ramelli, two liues in length, which give a featheiy character to the
branches. The tomentum on the branches at this season is also close-pressed and süky. At a later stage the rosy
ramelli become much less abundant, and at length are confined to the tips of the smaller ramuli, while the tomentum
of the branches becomes more shaggy aud uneven. Eiually, the rosy ramuli altogether fall off, and the plant puts
on the fonn described as Griffithsia {Hahams) radiciformis, being then in texture, substance, and general aspect
extremely unlike the dehcately pencilled and feathered young plant. It is at this stage of growth that the fruit of
both kinds is produced. The cystocarps, exactly similar in straeture to those of other Wrangelia, are borne on
lougish pedicels issuing from the older branches. The telraspores are densely aggregated in grapc-like clusters,
surrounded by involucral ramuli, and are borne on httle pedicels rising from the hranches.
3. W ra n g e lia Jean n e r e ttii (Hook. fil. et Harv. in Lond. Journ. Bot. vi. p. 411 ; J. Ag. Sp. Alg.
ii. p. 709).
H a b . Port Arthur, Jeannerett.
We are not in a position to throw any more Ught on this species.
4. W ra n g e lia cr a ssa (Hook. fil. et Harv. iu Lond. Joum. Bot. vi. p. 410; J . Ag. Sp. Alg. ii.
p. 706).
IIab. Georgetown, R . Gunn, W. H. H.
D i s t r ib . Port Phillip, W. II. II.
5. W ran g e lia p reten sa (Harv.) ; fronde gelatinosa elata articulata ecorticata inferne plus minus
sluposa decomposite ramosissima, ramis virgatis longe protensis alterne v. opposite ramosis, ramis minoribus
ramulisque simplicibus attenuatis ad genicula opposita v. verticillatim ramellosis, ramellis erecto-
appressis strictis vix attenuatis obtusis basi pinnulatis, racliide longe excurrente, tetrasporis ad latera pinnu-
larum sessilibus globosis, articulis ramorum longissimis, ramellorum diametro 4-6-plo longioribus.— Harv.
Alg. Austr. Exsic. n. 263.
H a b . Georgetown, R. Gunn.
D i s t r ib . Port Phillip, W. H. H.
Ironds 6 -12 inelies long, excessively and densely branched, the principal branches long and virgate, several
times compound, the ultimate branches au ineh or two in length, simple, attenuated. All tlie branches and their
divisions are very erect. The older paits of the frond, though pehuddly articulate and ecorticate, become shaggy
with stupose filaments, which issue from the dissepiments, and are deflected downwai-ds like rootlets. Every articulation
of tlie brandies and ramuli bears a pair of opposite ramelli, which are very erect or appressed, simple or
branched from the base, often pinnulated in the lower part, but always with a long excurrent point. Tetraspores
are scattered on tlie pinnulæ of the ramelli. Oystocarps unknown. Substance gelatinous and soft. Colour
a rosy-red.
C. W ran g e lia mucronata (Harv.) ; dense cæspitosa, frondibus roseis rigidiusculis capillaribus
dichotome ramosissimis ecorticatis articulatis ad genicula verticillatim ramellosis, ramellis subternis furcatis
V. trifurcatis cellula terminali minuta subulata acute mucronatis, tetrasporis in cymis subapicalibus dispo-
sitis, articulis ramorum longissimis, ramellorum diametro 6- 8-plo longioribus. (Tab. CXCI. B.)
I I a b . Tasmania, R . Gunn. (Very rare ?)
Fronds 6 -8 inches long, densely tufted, capillary, of nearly the same diameter throughout, pellucidly articulate,
excessively branched in a more or less regularly dichotomous manner. Every dissepiment'bears a whorl of mostly
three ramelli, about a line in lengtii, and two or three lines cHstant. These are generally forked, or often trifid, each
anil of the fork being composed of one long ceU, tipped by a minute, thom-like terminal ceU. TJie telraspores are
borne in little cymes, fomed out of the ramelli, near the ends of tlie branches. The colour is a deep rosy-i-ed. The
substance is membranous, and the plant only imperfectly adheres to paper in drying.—This appears to he a veiy
distinct species, allied to W. myriopJiylloides, but abundantly different.—P l a t e CXCI. B. Fig. 1 , a tuft,
size; 2, frastule of a branch, with whoried ramelli; 3, a rameffiis; 4, a fertile ramellus, udth tetraspores ; 5, tetra-
spore :—the latter figures magnified.
7. W ran g e lia se tig e ra (H aw.); fronde crassiuscula cartilaginea corticata decomposite ramosissima,
ramis elongatis pluries alterne decompositis erecto-patentibus, ramulis plus minus articulatis ad
genicula verticillatim ramellosis, ramellis setaceis simplicissimis pateutibus cyhndraceis obtusis, articulis
ramorum diametro æqualibus ramellorum subtriplo longioribus, cystocarpiis secus ramos sparsis pedicellatis,
tetrasporis ad latera ramellorum sessilibus.— Spyridia filamentosa, 0 verticillata, Ilarv. in Lond. Journ. iii.
p . 449. Spyridia Tasmanica, Külz. Sp. Alg. ! p . 666 ; J. Ag. Sp. Alg. ii. p . 342 ! (Tab. CXCI. A.)
H a b . Georgetown, R . Gunn, W. H. H.
D is t r ib . Port Pliillip, W. II. H.
Frond 12-18 inches long, much branched and bushy. In external habit it strongly resembles Spyridia filamentosa,
for a variety of whicli plant we once held it. The cystocarpic fruit, now first ascertained, is however tliat
of a Wrangelia; with uo other recorded species of which genus has the present species mucli affinity.—P late
CXCI. A. Fig. 1, a frond, tlic natural size; 3, frastule of a branch, with tetrasporiferoiis ramelli; 3, a ramellus
witli tetraspores; 4, frastule of a branch with a cystocarp; 5, spores and paranemata from the same; 6, a
parancma :—the latter figures magnified.
T r ib e IV. CORALLINE/E.
Gon. LIX. AMPHIEOA, Lx.
(Lamour, Cor. Flex. p. 294. Ilarv. Ner. Austr, p, 95. J, Ag. Sp. Alg. ii. 529.)
I. Amphiroa charoides (Lamour.; Harv. Ner. Austr. p. 96. t. 3 9 ; J . Ag. Sp. Alg. ii. p. 5 .39 ),
H a b . Sea-sliores, common.
D is t r ib . Australia.
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