226 FLORA ANTARCTICA. [Fuegia, the 



often growing together, they do not appear to pass into one another. The small size, depressed and stellate habit, 

 densely fulvous silky clothing, and especially the hairy carpels always serve to distinguish the present. 



Plate LXXXIII. Fig. 1, a flower ; fig. 2, the same, laid open ; fig. 3, front, and fig. 4, back view of a petal ; 

 fig. 5, young, and fig. 6, ripe carpel ; fig. 7, the same cut open showing the seed : — all magnified. 



* * * Hecatonia, foliis integris. 



7. Ranunculus liydroj>hilvs, Gaud. ; totus glaberrnnus, caule gracili repente, foliis longe petiolatis na- 

 tantibus elliptico-ovatis integerrimis 3-5-nerviis, pedunculis axillaribus petiolo brevioribus, floribus parvis, 

 petalis flavis spatlmlatis, carpellis paucis, stigmate subsessili. R. liydropliilus, Gaud, in Ann. So. Nat. vol. v. 

 p. 105. Freycinet, Toy. Bot. p. 136 and 475. IfUrvitte in Mem. Soc. Linn. Paris, vol. iv. p. 515. 

 (Tab. LXXXII. Fig. B.) 



Hab. Falkland Islands; in streams, lagoons, and pools of fresh water, abundant; Gaudic/iaud, B'Ur- 

 ville, J. B. H. 



Caules 4-8 unc. longi, parce ramosi, ad axillas folionun radicantes. Folia fasciculata, tenia cpiinave, basi vagi- 

 nantia ; petioli 3-5 unc. longi, erecti, crassiusculi ; lamina parva, i unc. longa, plerumque natans, plana, obtusa, 

 nervis 3-7 parallelis. Pedunculi ex axillis foliorum solitarii, petiolo rnultoties breviores, sub A unc. longi. Sepala 

 late ovato-rotundata, membranacea. Petala calyce breviora, 1 lin. longa, flava, spathulata, infra medium squami- 

 fera, basin versus attenuata. Capitulurn parvum, globosuin. CarpeUa pauca, pallide flava, oblique oblonga, obtusa, 

 vix 1 lin. longa. 



A very distinct species, both in habit and in other characters, perhaps most resembing R. humilis, Hook, 

 and Am. (Bot. of Beechey's Voy. p. 4.), which is a variety of R. trisepalus, Gillies ; but the present is not branched 

 upwards, the flowers are very different, and the carpels are not punctate. The leaves much resemble the upper 

 floating ones of Potamogeton heterophyllus. 



Plate LXXXII. Fig. B. — Fig. 1, flower ; fig. 2, petal ; fig. 3, stamen ;fig. 4, young carpel ; fig. 5, ripe ditto ; 

 fig. 6, the same cut open : — all magnified. 



8. Ranunculus trullifolius, Hook. fil. ; glaberrimus, caulibus brevissimis sarmentosis, foliis radicalibus 

 natantibus obovato-cuneatis integerrimis apicibus 3-5-dentatis, petiolis elongatis incrassatis superne attenuatis, 

 pedunculis petiolo brevioribus, floribus inconspicuis, sepalis late ovato-rotundatis, petalis brevibus. (Tab. 

 LXXXII. Fig. A.) 



Hab. Falkland Islands ; St. Salvador Bay, in a fresh-water lagoon. 



Radix fibrosa, fibris crassis elongatis, e collo sarmenta elongata radicantia emittens. Folia omnia radiealia ; 

 petioli basi longe vaginantes, 4-6 mic. longi, teretes, antice canalicidati, vahdi, crassiuscidi, superne gradatim incras- 

 sati, infra laminam attenuati ; lamina \-\ unc. longa, abrupte truncata, grosse et inaequaliter 3-5-dentata, dentibus 

 obtusis, 3-5-nerviis, nervis parallelis, limde viridis v. purpurascens. Flosfructusque ut in R. hjdropliilo sed paido 

 majores et pedunculo crassiore. 



Certainly more nearly allied to the former than to any other species of the genus ; but quite distinct, of a larger 

 size and more succident habit, with leaves of a different form, abruptly truncate and lobed at the extremity. 



Plate LXXXII. Fig. A. 



