44 CARL SKOTTSBERG, MARINE ALG^ 1. VHMOPHYCEM 



H. funicularis (MoNT.) SaUV. 



Falkland Islands: Cape Pembroke, not uncommon in tide-pools (St. 3, 

 7. 1. 08); West Falkl., Halfway Co ve, sublitoral 8 m, fragments (St. 5, 25. 11. 07). 



Distribution: Circumpolar-subantarct., Austral., N. Zeal. 



Cladostephus Ag. 



C. setaceus Suhr. — Fig. 18 a — b. 



In Ant. Meeresalg. I p. 58 I used this name for Cladostephus spongiosus of Hoo- 

 ker in Fl. Ant., with which the plants collected by me in the same regions seemed 

 identical. They answered well to the description and figure of Suhr, who founded 

 the species on a specimen collected by Binder somewhere on the Chilean coast. 

 Further, I was of the opinion that Kutzing's C. antarcticus, based upon a Hookerian 

 specimen, was the same. The latter name is much younger and consequently was 

 rejected. 



Sauvageau, in his memoir on the Sphacelariacese III p. 487 doubts the ident- 

 ity of the tvvo species and regards both as »species inquirenda?»; Hooker's G. spon- 

 giosus is also placed among the dubious species. In order to contribute to a better 

 imderstanding of the subantarctic forms I add a number of figures dravvn from my 

 nevv material. 



In two places, mentioned below, a Cladostephus was brought up which, to judge 

 from the description and figure of Suhr, could very well be identified with his 

 species. The plant from St. 47 (fig. 18 a) has very slender, still growing tips, the 

 older parts having löst their verticils. The verticils do not contain more than 3 to 

 6 branchlets, at least not the upper ones. The branchlets are all simple, very long 

 and slender and more or less curved; very rarely a forked branchlet was observed, 

 then also provided with one or two hairs, while the plant is otherwise quite hairless. 



The specimen from Susanna Cove (fig. 18 b) differs in some respects. The 

 older parts are naked or clothed with fertile branchlets, all simple and slender. The 

 young tips are long and thin and their verticils contain 12 to 15 branchlets, nearly 

 all simple, especially the younger ones, of the same general form as in the former, 

 but shorter. I can not find any important difference between the two forms; still, 

 the former must resemble C. Harioti Sauv., a very little known species. Differences 

 such as between this and C. setaceus may result from seasonal or other extern al 

 conditions. 



Straits of Magellan: Susanna Cove, sublitoral 16—18 m (May 08, sp., 

 leg. A. Pagels). Fuegia: Slogget Bay, in tide-pools (St. 47, 11. 3. 09, sp.). 



C. antarcticus KtJTZ. — Fig. 18 c — d. 



To this species I ref er plants from two other stations. Those from St. 16 (fig. 

 18 c) have very few branchlets left except on the tips; the lower ones are forked 

 or simple, the upper simple. The verticils contain about 10 branchlets. The fertile 



