308 FLORA OF TASMANIA. [Alge, by W. H. Harvey. 
Trips 3. WRANGELIACEE. 
Gen. LVIII. WRANGELIA, 4y. 
(Ag. Sp. Alg. ii. p. 136. Endl. 3rd Suppl. p. 35. Kütz. Sp. Alg. 664. J. Ag. Sp. Alg. ii. p. 703.) 
l. Wrangelia plumosa (Harv. Lond. Journ. Bot. iii. p. 450; Kiitz. Sp. Alg. 664; J. Ag. Sp. 
Alg. ii. p. 706). 
Has. Tidal rocks, in rock-pools, very abundant. 
Disrris. Port Phillip and Western Port, etc., W. H. H. 
2. Wrangelia nobilis (Hook. fil. et Harv. in Lond. Journ. Bot. iii. p. 411; Kiitz. Sp. Alg. p. 665; 
J. Ag. Sp. Alg. ii. p. 709). Griffithsia (Halurus) radiciformis, Hook. fil. et Harv. l.c.; Kütz. Sp. Alg. 
p. 663; J. Ag. Sp. Alg. ìi. p. 91 (the winter and fructiferous state). 
Has. Common at and above Georgetown. 
The summer and winter states of this beautiful species are so dissimilar that, when first we received specimens 
from Mr. Gunn, we described them under two different genera, founding our W. nobilis on the summer form, and 
our Griffithsia radiciformis on the winter one, and in this error we have been followed by Agardh and Kützing. 
Extended observations on the living plant, and the possession of multitudes of specimens in every intermediate 
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 forms. In the young or summer state all the younger parts of the 
frond are clothed with very delicate rosy-red ramelli, two lines in length, which give a feathery character to the 
branches. The tomentum on the branches at this season is also close-pressed and silky. 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 and uneven. Finally, the rosy ramuli altogether fall off, and the plant puts 
on the form described as Grifithsia (Halurus) radiciformis, being then in texture, substance, and general aspect 
extremely unlike the delicately pencilled and feathered young plant. It is at this stage of growth that the fruit of 
both kinds is produced. The eystocarps, exactly similar in structure to those of other Wi rangelie, are borne on 
longish pedicels issuing from the older branches. The tetraspores are densely aggregated in grape-like clusters, 
surrounded by involucral ramuli, and are borne on little pedicels rising from the branches. 
3. Wrangelia Jeannerettii (Hook. fil. et Harv. in Lond. Journ. Bot. vi. p. 411; J. Ag. Sp. Alg. 
ii. p. 709). 
Has. Port Arthur, Jeannerett. 
We are not in a position to throw any more light on this species. 
4. Wrangelia crassa (Hook. fil. et Harv. in Lond. Journ. Bot. vi. p. 410; J. Ag. Sp. Alg. ii. 
p. 706). 
Has. Georgetown, R. Gunn, W. H. H. 
Disrrrs. Port Phillip, W. H. H. 
5. Wrangelia protensa (Harv.) ; fronde gelatinosa elata articulata ecorticata inferne plus minus 
stuposa decomposite ramosissima, ramis virgatis longe protensis alterne v. opposite ramosis, ramis minori- 
bus ramulisgue simplicibus attenuatis ad genicula opposita v. verticillatim ramellosis, ramellis erecto- 
appressis strictis vix attenuatis obtusis basi pinnulatis, rachide longe excurrente, tetrasporis ad latera pinnu- 
larum sessilibus globosis, articulis ramorum longissimis, ramellorum diametro 4—6-plo longioribus.—Harv. 
Alg. Austr. Exsie. n. 263. 
Has. Georgetown, R. Gunn. 
Disrris. Port Phillip, W. H. H. 
