200 THE JOURNAL OF BOTANY 



lariter dichotoma et superne parce lateraliter ramulosa ; ramis 

 admodum elongatis, ramulis plerumque acutis : cystocarpiis infra 

 apices ramulorum aeque circumcirca prominulis ; tetrasporangiis 

 zonatim divisis in ramulis leviter incrassatis et subnematheciosis 

 densius sparsis (?). 



Substantia frondis exsiccatione fere cornea. Near Cape Mor- 

 gan, Flanagan ; Kowie, Becker. 



The plant bears some resemblance in habit to Trematocarpus 

 {Dicnrella) fragilis or rather to Gigartina flagelUfera Kg., Tab. 

 Phyc. xviii. t. 5, and Trematocarpus elongatus Kg., ihid. t. 4. The 

 structure of the frond seems to be the same as in Bhahdonia 

 dendroidea Harv. (see J. Agardh, Epic. p. 391, 1892). In the 

 position and evolution of the cystocarps our plant agrees with 

 B. coccinea and B. dendroidea, while the tetraspores seem to be 

 arranged nearly as in B. compressa J. Ag. Anal. Alg. p. 116. I 

 have examined only a single not well-preserved tetrasporiferous 

 specimen. I must not omit to remark that from the three 

 mentioned species of Bliahdonia our plant differs by the mode of 

 ramification and by other signs. In Herbb. Eeinbold, Becker, 

 Tyson, and Flanagan, no. 278. 



Nemalion furcellatum, n. sp. C. 4-6 cm. alta tereti- 

 uscula, gelatinoso-membranacea, dichotomo-decomposita fasti- 

 giata, subflabellata ; axillis acutis, apicibus segmentorum obtusis 

 saepe furcatis. 



Antheridia generis, cystocarp. et tetrasp. ignotis ! Table Bay. 

 In Herbb. Eeinbold, Becker, Tyson. 



Gigartina Tysoni, n. sp. C. 5 cm. alta, carnoso-cartila- 

 ginea, dichotomo-subfastigiata, subflabellata, fere tota articulato- 

 constricta ; apicibus cuneatis, saepe bi- vel trifidis, obtusis ; 

 cystocarpiis subhemisphericis in disco segmentorum terminalium 

 evolutis ; tetrasp. et anther, ignotis I Table and Kamp's Bays. 



The plant externally somewhat resembles Hormopliora austra- 

 lusica J. Ag., but difl'ers from it by its internal structure. Some 

 slight resemblance might also be found with Gigartina ? ValdivicB 

 Eeinb., as this plant, too, shows, here and there, joint-like con- 

 strictions, but G. Valdivice is a much stronger plant of a quite 

 different mode of ramification, and the joint-like constrictions are 

 of accidental character, whereas in G. Tysoni the whole plant 

 almost is distinctly and characteristically articulated. In Herbb. 

 Eeinbold, Becker, Tyson. 



I may add that the Nemalion and Gigartina are, so far as I 

 am aware, extremely rare. The first, hitherto, has been confined 

 to Three Anchor Bay, an inlet of Table Bay, and appears to be an 

 annual seldom seen after New Year, and with whose habitat I am 

 unacquainted. In course of the past four years, hardly a dozen 

 specimens were collected. The second has only been gathered 

 after stormy weather in " wash-ups " during the same period 

 mentioned, in much the same quantity, and it probably grows in 

 deep water. Found at Kamp's Bay, Sea Point, Three Anchor 

 Bay, all in the Cape Peninsula, at one or other time from May to 

 October. 



