Algce7\ 



FLORA OP NEW ZEALAND. 



247 



Gen. LXX. EHODOPHYLLIS, Kiitz. 



(Kutz. Sp. Alg. p. 786. J. Ag. Sp. Alg. ii. 387. SMctoplyllum, Kutz. Sp. Alg. 874. Eutliorce sp., J. Ag. 



1. c. p. 385.) 



1. Ehodophyllis Gunnii, Harv. ; fronde tenui-membranacea rosea decomposita pinnatifida, laciniis 

 alternis subbipinnatifidis crebris, lacinulis crenato-dentatis, axillis rotundatis apicibusque obtusis, coccidiis 

 sphsericis marginalibus, tetrasporis zonatim partitis prope apices laciniarum sparsis. — Cladhymenia ? Gunnii, 

 Harv. Loncl. J. Bol. v. 4. p. 540. Harv. Ner. Austr. p. 87. t. 32. Callophyllis Gunnii, Kiitz. Sp. Alg. 

 p. 746. Euthora Gunnii, J. Ag. Sp. Alg. v. 2. p. 386. 



Hab. Dredged in fifteen fathoms, at Preservation Harbour, and found on the sandy beach at Chalky 

 Bay, West Coast, Lyall. (Native of Tasmania.) 



Dr. LyalFs specimens, with both descriptions of fruit, are very similar to those sent by Mr. Gunn from Tasma- 

 nia. The tetraspores are zonate, and not tripartite, as incorrectly shown in the plate in 'Nereis Australis.' 



2. Ehodophyllis membranacea, Hook. fil. et Harv. ; fronde tenui-membranacea rubra (siccitate fus- 

 cescenti) punctis rubris minutissimis densissime conspersa decomposite pinnatifida et same prolifero-fim- 

 briata, laciniis alternis primariis latis secundariis angustis, lacinulis profunde lobatis pinnatifidisve, ultimis 

 lineari-oblongis subacutis basi angustatis, axillis rotundatis, coccidiis sphsericis marginalibus, tetrasporis 

 zonatim partitis prope apices laciniarum sparsis. — Halymenia ? membranacea, Harv. in Loncl. J. Bot. v. 4. 

 p. 448. Bhodymenia membranacea, Harv. 1. c. v. 6. p. 405. Stictophyllum membranaceum, Kiitz. Sp. 

 Alg. p. 874. Euthora membranacea, J. Ag. Sp. Alg. v. 2. p. 385. (Tab. CXVII.) 



Hab. Cook's Straits, Lyall. East Coast, Colenso. (Native of Tasmania.) 



Nearly related to the preceding, but with narrower segments and a more ragged habit, and a very fugacious 

 colour. Under a lens the whole frond appears closely dotted with dark red specks, which we formerly mistook for 

 tetraspores. The true tetraspores are confined to the ultimate lacinias, and are zonate. Our present specimens are 

 well furnished with fruit of both kinds. — Plate CXVII. Fig. 1, plant, natural size; 2, vertical section of a concep- 

 tacle; 3, spore-threads from the same; 4, apex of a lacinia, with scattered tetraspores; 5, a tetraspore : — all more 



. . . .... 



3. Ehodophyllis ? angwstifrons, Harv.; dense csespitosa, intense rubra, fronde angustissima lineari e basi 

 dichotomo-decomposita, laciniis divaricatis ssepe dichotomis nunc tri-multifidis, axillis rotundatis, apicibus 

 acutis v. obtusis, fructu . . . ? 



Var. /3; duplo angustior, apicibus omnibus acutissimis. 



Hab. Port Nicholson and Bluff Harbour, Lyall. 



Fronds densely tufted, 2-3 inches high, excessively branched from the base, dichotoruous or irregularly partite ; 

 the lacinise from J line to a line, rarely more in breadth, preserving nearly the same width throughout, or slightly 

 widening upwards, widely spreading, the terminal ones frequently secund. Apices either blunt or acute. Substance 

 membranaceous, adhering to paper. — The genus to which this plant should be referred cannot be ascertained till the 

 fruit be discovered. 



4. Ehodophyllis? lacerata, Harv.; stipite cartilaginea filiformi brevi mox complauato et in basifrondis 

 desinente, lamina tenuissime membranacea rosea subdichotoma, laciniis primariis latis secundariis sensim 

 angustatis dichotomo-multifidis, ultimis elongatis attenuatis acutis fere subulatis hie illic parcissime denti- 

 culatis, fructu . . . ? 



Hab. On rocks at Port William, Lyall. (A single specimen.) 



We. do not like to found species on single specimens, and yet are unwilling to omit some notice of this plant, 

 which can hardly be referred to the preceding ; and we are unable to point to any nearer relationship. 



