476 FLORA ANTARCTICA. \Fuegia, the 



margine lacinulis brevissimis truncatis quadratis alternis ornato, axillis rotundatis : — R. Lambertce forma 

 similis, sed substantia differt. 



Var. p. atro-sangu'mea ; fronde substipitata atro-sanguinea palmato-fissa, laciniis obtusis erectis sub- 

 dichotome v. alterne divisis margine proliferis, axillis rotundatis. Color luridior quam in var. a. 



Var. y. latissima ; fronde 10 unc. longa ad pedalem, laciniis parum divisis apice truncatis 1-4 unc. 

 latis. Varietas a caeteris valde diversa, sed certe nil nisi forma gigantea. 



Var. 8. lacerata ; inter varietates a et /3 media : — frons subsessilis divisa. 



Var. f. prolifera ; fronde li-2 unc. longa subdichotoma, laciniarum marginibus proliferis lacinulas 

 numerosas angustissimas furcatas v. irregulariter ramulosas acutas emittentibus. 



Var. C • pulcherrvma ; laciniis angustis decomposito-ramosis, pinnulis ultimis elongatis emarginatis. 



Hab. Hermite Island, Cape Horn ; var. a. Falkland Islands ; var. a. /3. (on the outer sea-coast) and (. 

 (in Berkeley Sound) Kerguelen's Land ; vars. a. y. &. and f. All very abundant in Christmas Harbour. 



A more variable species can scarcely be imagined : so dissimilar are its forms that the more distinct of them 

 were unhesitatingly pronounced to be different species, before the whole suites of specimens were collated. In 

 Kerguelen's Land it is one of the most common of Alga ; and the varieties, collected there and noted as belonging 

 to the one species, are connected by various links with one another, and with the forms of Cape Horn, the Falkland 

 Islands, and of the American coast. The dark coloured variety, 0. atro-sanguinea, is evidently sea-beaten, and 

 though generally destitute of the marginal tooth-like lacinise, so conspicuous in a, there are specimens possessing 

 them, which connect the two forms. The var. y. latissima is the best marked, more, perhaps, by its great size 

 than by its presenting any positive characters : it was gathered along with a and 8, and referred when fresh to 

 the same species. In the Falkland Islands the var. f. is conspicuous for having few, and but sparingly divided 

 principal segments, about \ mch wide, suddenly passing into narrow much-divided minor segments from i— 1 line 

 broad. Though at first sight abundantly distinct from 0. or y., it is immediately connected with them both 

 through var. a. 



We follow Endlicher in quoting Suhr's figure of R . glaphgra as a synonym of this species : the representation 

 is, however, anything but characteristic of an Alga. 



7. Rhodymenia variolosa, Hook. fil. etHarv. ; fronde carnoso-membranacea sanguinea in lacinias 

 plures late lineares v. civneatas elongatas furcatas dichotomasve ad basin fere divisa, laciniis basi angus- 

 tatis erectis apice obtusis emarginatisve, coccidiis? superficialibus densissime conspersis sessilibus pedicella- 

 tisve deciduis. Nobis in Lond. Journ. Bot. vol. iv. p. 259. (Tab. CLXXX.) 



Hab. Christmas Harbour ; Kerguelen's Land. 



Irons 2-3 v. 7-8 unc. longa, ad basin fere in lacinias fissa. Lacinia \-\ unc. latse, e basi angustata sensim 

 latiores, furcatae, bis terve dichotome divisa?, sinubus latis obtusis, margine integerrimo v. parce prolifero, super sub- 

 terque corporibus granuliferis (coccidia ?) sparsa?. Coccidia ? (in genere abnormalia) superficialia, subglobosa, ba9i 

 angusta frondis affixa, cito deeidua. 



Albed to the R. variegata, especially in form, but of a firmer texture and brighter colour ; and very different in 

 the nature of the fructification, which is easily detached, leaving only a small puncture on the surface of the lacinise : 

 this constitutes the peculiar character of the species. In the structure and form of the frond there is some affinity 

 with the Oraeilaria polycarpa of the south of England and California; but the fruit of that plant is quite 

 different. 



