Falklands, etc.] FLORA ANTARCTICA. 281 



being manifestly the case in the northern hemisphere with this species and its congeners. May we suppose its 

 dispersion to be yet incomplete ? and that, at some future period, it will spread further south and fully assume in 

 those regions the position held by some of its congeners in the northern ? 



2. Saxifraga bicuspidata, Hook, fil.; laxe csespitosa, glaberrima, caulibus decunibentibus gracilibus 

 parce rarnosis foliosis, foliis anguste lineari-spathulatis uiiinerviis apice bicuspidatis marginibus cartilagineis, 

 pedunciilo axillari nudo unifloro, calycis lobis apice emarginato-bifidis, stamiiiibus 5, calyce semisupero. 

 (Tab. XCVII.) 



Hab. South part of Ticrra del Fuego ; C. Darwin, Esq. Herrnite Island, Cape Horn ; on the moun- 

 tains, 1,200 feet; J.B.H. 



Laxe casspitosa, siccitate rufo-fusca et flaccida, apicibus ramulorum foliisque junioribus viridibus, tota glaberrima. 

 Caules pollieares, gracdes. Folia \-\ unc. longa, anguste lineari-spathidata, medio tenuiter uninervi, apice bicus- 

 pidato, marginibus anguste cartilagiueis. Pedunculi axillares, solitarii, nudi, folio subaequilongi, post anthesin 

 elongati. Calyx basi conicus, profunde quinquelobus, lobis ad apices emarginato-bifidis, segmentis acutis. Petala? 

 Stamina 5. Capmla semisupera, compressa, carpellis supra medium liberis deinde divaricatis, rirna ventrali sursum 

 spectante dchiscentibus, stigmatibus simplicibus sessilibus. Semina pauea, testa brunnea subcoriacea ; albumine car- 

 noso ; embryone tereti. 



A very singular species, hitherto detected only on the mountains at the extreme south part of the American 

 continent. It exhibits little resemblance to its congeners, except in having somewhat of the habit of S. oppositifolia, 

 which is highly variable in the number of stamens. To the peutandrous S. rammculifolia, Hook., of the Rocky 

 Mountains, the present has but slight specific affinity. 



Plate XCVII. Fig. 1, Branch and leaves ; fig. 2, an old flower ; fig. 3, stamen ; fig. 4, ripe capside ; fig. 5, 

 seed : — all Magnified. 



6. CHRYSOSPLENIUM, Town. 



1. Chrysosplfxium macranthum, Hook.; glaberrirnuni, caule proeumbente basi repente, foliis oppo- 

 sitis petiolatis ovato-cordatis obtusis grosse sinuato-crenatis in petiolum attenuatis, pedunculis tenninalibus 

 bracteatis trifloris, floribus di-trigynis intermedio sessili, ovulis placentis parietalibus affixis. C. macranthum, 

 Hook, in Lond. Journ. of Bot. vol. i. p. 458. 1. 16. C. elevaturn, Banks et Sol. in Mas. Banks, cum icone. 



Hab. Strait of MagaUiaens ; Eagle Bay, Port Famine, Capt.King. Good Success Bay, Banks and Solander. 



A very handsome species and much the largest-flowered of the genus. The seeds are attached to parietal 

 placenta?, having then - origin upon anastomosing veins, which ultimately lead to the diverging styles. 



2. Chrysosplexium Taldivicum, Hook.; glabemmum, caule repente, foliis oppositis petiolatis ob- 

 longo-rotundatis obscure sinuatis basi subtruncatis. C. Valdivicum, Hook, in Lond. Journ. of Bot. vol. i. 

 p. 459. 1. 17. 



Hab. Herrnite Island, Cape' Horn; in open places near the sea; -/. B. H. 



My specimens are extremely imperfect, though sufficient to identify the species with that from Valdivia, which 

 does not appear to have been found in any intermediate locality. The present is distinguished from C. macranthum 

 by its more rounded and scarcely sinuated leaves, somewhat triuicate at the base. Some of Mr. Bridges' specimens 

 have leaves fully \\ inches long. 



7. DON ATI A, Font. 



4. DonATiAfatcicularis, Forst.; Char. Gen. t. 5. D. Magellanica, Lamk. Illust. vol. i. p. 217. t. 51. 



3 o 



