KUNGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 63. N:0 8. 19 



different, the branching less regular in corallina, also notable for its pedicellate proli- 

 ferations (see Cotton, Crypt. Falkl. Pl. 7, under »Phyllophora cuneifolia>>). 

 Distribution: Chile to Fuegia, Falkl. 



Rh. palmatiformis Skottsb. in Kylin & Skottsb. p. 21, fig. 11 — 12. 



f. cfr. limaris Skottsb. — Falkland Islands: Sparrow Cove, 11 — 13 m, 

 gravel, scarce (St, 9, 10. 1. 08). 



f. basiramosa Skottsb. — Falkland Islands: Port Louis, common in 

 the litoral (St. 11, 7. 2. 08). 



f. aiistrogeorgica Skottsb. — South Georgia: Cumberland Bay, Boiler 

 Harbour, 10 m (St. 49, 20. 4. 09); Strömnaes Bay, 1 m, rocks, with transitions to the 

 following (St. 51, 24. 4. 09, ©). Bay of Isles, Rosita Harbour, 8 m, rocks (St. 52, 25. 

 4. 09). 



f. sublitoralis Skottsb. — South Georgia: Cumberland Bay, Boiler Har- 

 bour, 5—10 m (St. 48, 49, 20. 4. 09, ©); Strömnaes Bay, 8 m, stones (St. 50, 24. 4. 09, 

 ©). Drifted, Moraine Fiord (18.4.09), ©). 



Specimens from St. 49 show that the seasonal development, at least of the South 

 Georgia forms, is about the same as in Leptosarca, what strengthens my opinion that 

 these plants have much in common. Probably Rh. palmatiformis, as well as the nortliern 

 Rh. palmata, ought to be removed from Rhodymenia. 



Distribution: S. Chile to Fuegia, Falkl., S. Georgia. 



Leptosarca Gepp. 



L. decipiens (Reinsch?) Skottsb. — Kylin & Skottsb. p. 26. 



South Georgia: Bay of Isles, Rosita Harbour, 8 m, common on small stones 

 (St. 52, 25. 4. 09). 



With the new material at hand I feel inclined to regard L. simplex Gepp as con- 

 specific with my L. decipiens, but if this is the same as Reinsch' s species is not at all 

 certain. The habitus figure (Meeresalg. Siidgeorg. Taf. 10) suggests Leptosarca, but 

 the anatomical figure is different (polystromatic medulla). Reinsch' s illustrations 

 are always poor and rarely accurate, so for all we know his Rhodymenia decipiens may 

 be another plant altogether. Not few species described and figured by him have never 

 been identified. 



Distribution: S. Georgia. 



Plocamium (Lamx) Lyngb. 



P. Hookeri Harv. — Kylin & Skottsb. p 29 f. 15. 



South Georgia: sublitoral, Cumberland Bay, Boiler Harbour, 5 m (St. 

 48, 20. 4. 09); Bay of Isles, Rosita Harbour, 8 m, rocks and gravel (St. 52, 25. 4. 09, ©). 



Distribution: S. Georgia, Kerg. 



