1914] Setchell: T lie Scinaia Assemblage 95 



emphasized particularly the strong (i.e., visible) axis which, in pressed 

 specimens, has the appearance of a midrib. This character will vary 

 in prominence according to the condition of the specimen and the 

 method of preparation. The second character emphavsized by Agardh 

 is the constrictions of the upper portion of the frond into cylindrical 

 segments. Agardh does not say how regular this may or may not be. 

 If regular, I am inclined to separate the plant from Scinaia furcellata. 

 The description of Agardh also indicates a more robust plant than 

 typical Scinaia furcellata. Both Harvey and the Crouan brothers 

 mention the greater diameter, the brighter color, and the midrib effect, 

 but say nothing as to the constrictions. The status of the plants 

 included under this reference cannot be settled, therefore, until the 

 various specimens can be examined critically. These statements, 

 however, together with my impressions of certain broader specimens 

 seen in the Herbarium of the British Museum of Natural History (but 

 not sectioned), lead me to believe that here may be at least two species 

 on European coasts additional to Scinaia furcellata as limited to type. 



Scinaia furcellata var. australis 



J. G. Agardh, Spec. Alg., vol. 3, 1, p. 512, 1876; 

 De Toni, Syll. Alg., vol. 4, sect. 1, p. 105, 1897. 

 Scinaia furcellata Hooker & Harvey, Flora New Zealand, vol. 2, p. 245, 1855 

 (fide J. G. Agardh, loc. cit.); Handbook of the Flora of New Zealand, p. 691, 

 1867. 



The var. australis is unknown to me except from Agardh 's descrip- 

 tion. The plant has a firmer wall and the branches are more evidently 

 fasciculate fastigiate. Agardh does not discuss any possible relation- 

 ship to be suspected between this plant and hi.s Gloiophloea Scinaioides 

 earlier described (1870, p. 29) from South Australia, except as he 

 queries whether all the austral Scinaia furcellata may not be referred 

 under Gloiopliloea Scinaioides. The fact that he later established the 

 var. australis seems to indicate that he considered the latter plant to 

 be a true Scinaia. As will be shown below, J. G. Agardh in his 

 account of the New Zealand algae (1877, p. 26) includes Scinaia fur- 

 cellata without comment and cites the references of Harvey and 

 Hooker (1845) which he in the "Epicrisis" (1876. p. 512) has cited 

 under the var. australis. I have been able to examine a specimen 

 from the Bav of Islands in the North Island of New Zealand collected 



