KTJNGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 61 . N.O II 9 



E. tomentosus (Huds.) Lyngb. 



Patagonia: Canal Gajardo, on Adenocystis (St. 21b, 27. 4. 08, sp., gt.); 

 Arauz Bay, on Chcetangium (St. 23, 3. 5. 08, gt.). Fuegia: Orange Bay (St. 45, 

 11. 3. 09). — Very characteristic and quite like northern specimens. The filaments 

 are often not more than 15 ja thick. The plants from 21 b bear very numerous 

 gametangia, 60— 90 X 10 — 18 [i, and also some sporangia, 36 — 45 X 24 — 30 \>., sometimes 

 three or four together on the same branch, sometimes a single one close to a game- 

 tangium. There is a distinct basal disc, as described by Kjellman, Handb. p. 72. 



Distribution: Aret., N. Atlant., Subantarct. Amer. 



Geminocarpus x Skottsb. 



(Syn. Gonimocarpus (sic!), Reinbold, Deutsclie Siidpolar-Exp. p. 190.) 



G. geminatus (HoOK. FIL. et HaRV.) Skottsb. 



This species is extremely characteristic of the subantaretie marine flora and 

 generally found fertile, but seldom with sporangia. I have never observed both kinds 

 of reproduetive organs on the same plant; probably there is a regular alternation of 

 generations. — Fuegia: Beagle Channel, plentiful on the beach in Ventisqueros 

 Sound (St. 43, 5. 3. 09, gt.); Ushuaia (St. 46, 14. 3. 09, gt.). Falkland Islands, 

 Cape Pembroke, in basins on other alga?, common (St. 3, 7. 11. 07, 7. 1. 08, sp., 

 gt.); West Falkl., Halfway Cove, on Macrocystis (St. o, 25. 11. 07, gt.); Westpoint 

 Isl. on rocks in the litoral region (St. 8, 5. 12. 07, gt.). South Georgia: Boiler 

 Harbour, sublit. on Adenocystis, 5 m (St. 48, 20. 4. 09, gt.); Bay of Tsles, on Lepto- 

 sarca, 8 m (St. 52, 25. 4. 09, gt.). 



Distribution: Subant.-antarct. circumpolar. 



Gononema Kuck. et Skottsb. nov. gen. 



Pars basalis plus minusve stratosa — elachistoidea, plerumque parum evoluta, 

 interdum stolones repentes intertextos emittens. Fila verticalia ectocarpoidea, mono- 

 siphonea, inferne plus minusve ramosa, dein simplicia, sat longe penicillata. Sporangia 

 in filis erectis basalia. Gametangia basalia (et saepe majora) vel in filamentis erectis 

 lateralia et numerosissima, uni- vel pauciseriata. Pili basales vel laterales nec non 

 terminales. Crescentia suprabasalis et intercalaris. 



While studying my new and good material of Ectocarpus pectinatus Skottsb. 

 with Prof. Kuckuck on Heligoland, I found that it differs more from most species of 

 that genus than I had thought before. There were the two kinds of gametangia, 

 larger basal and smaller lateral ones; lateral hairs were discovered, and we observed 

 that the cell carrying a lateral gametangium is sometimes fertilized (fig 3 b). This 

 made me suggest a relation to the small radial species of Desmotrichum, and I became 



1 An unfortunate bastard nanie, Didymocarpus being the correct form; but, according to the Vienna 

 Rules, this cannot justify an alteration. 



K. Sv. Vet. Akad. Handl. Band 61. N:o 11. 2 



