248 



ELOBA OF NEW ZEALAND. 



\Alg<B. 



Gen. LXXI, EHODYMENIA, Grev. ref. 

 (Grev, Alg. Brit. p. 84 (ref.). J. Ag. Sp. Alg. ii. 375.) 



1. Ehodymenia sanguinea, Harv. ; stipite tereti brevi mox cuneato-applanato et in basi frondis abeunte, 

 fronde purpureo-sanguinea palmato-dichotoma profunde laciniata, laciniis latis angustisve cuncatis apice 

 attenuatis margine simplici vel foliifero, foliolis cuneatis, axillis rotundatis, cystocarpiis hemisphsencis 

 numerosissimis per totam frondem tetrasporisque per lacinias minores densissime sparsis. 



Hab. Foveaux Straits, Lyall. 



Fronds rising for half an inch, with a cylindrical stipes, which then flattens into the cuneate base of the lamina, 

 sometimes an inch, sometimes 2-3 inches to the first fork. Frond 12-14 inches long, as much or more in the ex- 

 pansion of the lacinias, deeply divided ; lacinias from half an inch to one or two inches broad, cuneate, attenuated to 

 the apex. Sometimes the apices are truncate, and then frequently foliiferous ; the leaflets cuneate, either truncate or 

 pointed ; margin entire or foliiferous. Conceptacles very numerous, hemispherical, scattered over the whole frond ; 

 nucleus often partially barren. Tetraspores tripartite, densely scattered over the lesser lacinise and the accessory 

 leaflets. Colour a fine purplish blood-red. Substance firmly membranaceous, thiekish. 



2. Ehodymenia lanceolata, Harv.; fronde (vix nota) ... in lacinias lanceolatas elongatas basi et 

 apice acutas integerrimas partita, cystocarpiis tetrasporisque per totam frondem densissime sparsis. 



Hab. Port Cooper, Banks' Peninsula, Lyall. 



We have only seen imperfect specimens of this seemingly distinct species. It may possibly be only a variety 

 of the preceding, but the substance is softer, and the cortical layer more developed. Lacinia 6-8 inches long, quite 

 simple, J an inch to an inch broad, tapering, but not considerably, to the base and the acute apex. Colour a pur- 

 plish blood-red. 



3. Ehodymenia epymenioides, Harv. j stipite brevissimo cartilagineo in frondis -costa mox evanescente 

 prolongato, fronde tenui-membranacea rosea dichotoma flabelliformi basi cuneata costata, laciniis cuneato- 

 linearibus patentibus obtusis rotundatis v. marginatis, fructu . . . ? 



Hab. On stems of Ascidice, Otago Harbour, Lyall. 



Stipes i inch long, cartilaginous, prolonged as an evanescent rib, into the cuneate base of the many times dicho- 

 tomous, flabelliform frond. Lacinim •§ inch wide, linear or somewhat cuneate, very obtuse, the axils sometimes 

 rounded, sometimes subacute. Colour rosy-red. Substance delicately membranous, thin, adhering to paper. Cells 

 of the medullary stratum large, thin-walled, rapidly expanding when moistened. — It is difficult, by a character, to 

 distinguish this plant from R. dichotoma, but the microscopic appearance is different. Here the cells rapidly expand 

 when a thin slice is moistened, whilst they are opened with much difficulty in li. dichotoma. Our present plant 

 strongly resembles Epymenia obtusa, but the substance is thinner, and the structure different. Fruit unknown. 



4. Ehodymenia corallina, Grev. Hook fil. et Han. Fl. Ant. v. 2. p. 475. Mont. Voy. Pole Sud,p. 155. 

 /. Ag. Sp. Alg. v. 2. p. 379. Sphserococcus corallinus, Bory, Voy. Goa. p. 175. t. 16. Rich. Voy. Aslr. 

 N. Zeal. p. 3. 



Hab. D'Urviile Island, Cook's Straits, and East Coast, lat. 43°, Lyall. (Native of Chili.) 

 Our specimens are without fruit, and more densely tufted than usual. 



5. Ehodymenia dichotoma, Hook. fil. et Harv., Fl. Ant. v. I. p. 186. t. 72./. 1. Callophyllis dichotoma, 

 KiUz. Sp. Alg. p. 746. 



Hab. Dredged in eight fathoms, Queen Charlotte's Sound, Lyall. (Native of the Auckland Islands.) 



6. Ehodymenia linearis, J. Ag., Sp. Alg. 

 1. p. 444. {nee Ag.) 



2. p. 379. E. Palmetta, Hook. fil. et Harv. Lord. J. Lot. 



