10 CARL SKOTTSBERG, MARINE AI(1JE 2. RHODOPHYCE/E. 



Chiloé: Ancud Harbour, in beach drift, growing on Patetta (10.7.08). 



For the discrimination of this and allied species, see Howe, Mar. Alg. of Peru 

 p. 99 etc. My plants are sterile but typical and agree very well with Agardh's descrip- 

 tion Sp. Alg. II: 2 p. 266. 



Distribution: Peru, Chile. 



G. glomerata M. A. Howe, Mar. Alg. of Peru p. 104, pl. 39, 40 L 1—11. - Fig. 1 c. 



Chiloé: Ancud Harbour, litoral (St. 29a, 10.7.08, ?). 



It is with some hesitation that I bring my specimens to this and not to the follow- 

 ing, but as far as I can find they fall within the limits of Howe's species. The branching 

 is irregular dichotomous, the segments of ten acute; the cystocarps occur in the larger 

 segments or on small ramuli. It should be observed that with identical treatment the 

 material of G. glomerata remains much more rigid, almost corneous, while G. tuberculosa 

 is soft. 



Distribution: Peru, Chile (first record). 



(i. tuberculosa (Hook. Fil. et Harv. ) Grun. - - Kylin & Skottsb. p. 8. 



South Patagonia: Otway Water, Puerto Pomar (St. 15, 14.4.08, ?); 

 Arauz Bay, litoral (St. 23, 3.5.08). Fuegia: Slogget Bay, in tide-pools (St. 47, 

 16.3.09). 



Distribution: Peru, S. Chile to Fuegia, New Zeal., Auckl. I. 



Ahnfeltia Fr. 



The material collected by the writer in 1902 at the Falklands is rather like the 

 European form, but is more densely branched with very thin branches. The same form 

 from the same locality lies in Herb. Upsala as A. plicata var., Herb. Lenormand. 

 A less branched Falkland form was distributed by Hohenacker under no. 555 as Gym- 

 nogongrus plicatus Kutz. var. longior Kutz. 



The collection from 1907 — 09 does not contain any form exactly like the plants 

 from 1902, and there are many specimens of a much more coarse plant, identical with 

 A. elongata Mont. ex Gay, Hist. de Chile, Bot. VIII p. 333; this is retained as a species 

 by De Toni and Forti, Contrib. p. 684. Extreme forms of elongata are very unlike our 

 common plicata, being 3 — 4 times as thick and regularly forked, and correspond to 

 Gymnogongrus comosus Kutz. Tab. phyc. XIX t. 67 or G. filiformis 1. c. t. 68 (authentic 

 material in Hohenacker no. 376). There are other forms less regular than elongata 

 but stouter than typical plicata, referable to A. setacea (Kutz.) Suhr, described as Gym- 

 nogongrus by Kutzing 1. c. t. t. 67 and distributed by Hohenacker as G. furcellatus 

 (no. 180). I cannot make any safe distinction between plicata and setacea, or between 

 setacea and elongata, for which reason all are listed here under plicata. 



A. plicata (Huds.) Fr. — Kylin & Skottsberg p. 9. — Exsicc, besides numbers already 

 referred to: Hohenacker no. 191 (as Gymn. plicatus), 550 (as G. implicatus). Hariot, 



