KUNGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 50. N:0 3- 



33 



bicLilar witli scariose margin, 3,5x2,5—3 mm., petals 3, linear or linear-spathulate 4,5 — 

 5x1 — 1,5 mm., in the tip ± obtuse, påle yellow, with a glandular pit in the middle; 

 claw 3-nerved. Transitions between petals and stamens were met with. Stamens 12 — 

 15, ±1,5 mm. long, carpels 30 or more, nearly 3 mm. long, the erect or only slightly 

 curved style occupying the half ; ripe achenes 3 V2 mm. long with erect style. 



In running water or on very damp ground, rare: W. F., Westpoint Island, 

 abundant in a small stream! Saunders Island, in a swamp; E. F., Rabbit Cove, 

 submerged in water (with all leaves, also the floating ones, nearly entire, broad 

 linear; flowers typical). — Fuegia, Kerguelen. 



37. R. sericeocephalus HoOK. fil. 



I am not quite convinced, that this is different from R. maclovianus. True, 

 at first sight they seem two very different species, but Hooker himself knew that 



Fig. 6. Raniinculus pseudotrullifolius: a sepal, b — d petals. e transition between petal and 

 stamen, f stamen, g — k earpels, I — m matare achenes. X 10. 



they are in many respects closely allied to eacli other. R. sericeocephalus is 

 smaller and densely clothed with fulvous, silky liairs; but the other has the same 

 kind of indument, thougli much less copious. The flowers are exactly the same, 

 except for the pubescence. Fig. 7 shows mature carpels of both species. The 

 decisive characters are indeed more quantitative then qualitative. Hooker found 

 the two plants growing together. I have only seen them in different localities, the 

 former preferring drier gronnd; when growing on moister soil it is less hairy. 

 However, real transitions between them were not seen, so at present I feel obliged 

 to keep them apart. 



Generally near the shore, but also inland, both among grass and in the 

 dry lieath, never abundant. E. F., Duperrey Harbour, on banks near the water I 

 Port Stanley (Vallentin ex Wright), Port Harriet near the sea (Birger !), Victoria 

 Creek! W. F., Roy Cove! (also Vallentin ex Wright), Port Philomel, Halfway Cove! 

 on the grassy bank by the sea and at the margin of a small streem; Fox Island! 



Knugl. Sv. Vet. Akad. Handl. Band 50. N:o 3. •"> 



