1914] Setchell: The Scinaia Assemblage 81 



(1842, p. 393) proposed a species from the western coasts of South 

 America, Ginannia undulata, which Agardh reduced to a variety of 

 Scinaia furcellata (1851, p. 422) and Kuetzing (1849, pp. 715, 716) 

 referred to Ginnania (as he correctly transcribed Montagne's name) 

 five species. One of these, viz., G. irregularis has been later referred 

 to Nemastoma dichotoma J. Ag. (1842, p. 91). It is evidently not a 

 member of the genus Scinaia (cf. Kuetzing, 1866, pi. 69, a-c), while 

 his G. furcellata, G. pulvinata, and G. undulata have usually been 

 considered as all appertaining to Scinaia furcellata. Concerning the 

 ''Ginnania undulata" of Kuetzing, It may be noted here that the later 

 figure of this plant published by Kuetzing (1866, pi. 69, d-f) seems 

 more like a Callophyllis or some such plant than like Scinaia in struc- 

 ture. This point will be taken up again later. The fifth species of 

 Kuetzing, G. Salicornioides from Port Natal in South Africa, is abund- 

 antly different in habit and structure (cf. also Kuetzing, 1866, pi. 70) 

 from Scinaia furcellata. It is a regularly constricted form and so 

 different in certain details of structure from the type of the genus 

 Scinaia, that J. G. Agardh (1861, p. 423) refers it to Scinaia with a 

 query ("?"). 



In 1866 (p. 30, pi. 83) Kuetzing described and figured under the 

 name '"Ginnania carnosa" a plant from Ceylon which existed in Herb. 

 Sonder under the unpublished name of Scinaia carnosa Harv. This 

 is undoubtedly the plant issued by W. IT. Harvey under No. 38 of his 

 Algae of Ceylon (Exsicc), with printed label, but without diagnosis. 

 The plant is fairly close to Scinaia Salicornioides (Kuetz.) J. Ag. in 

 habit and structure and its status will be discussed later on. 



In 1876, J. G. Agardh (p. 512) described a var. australis of Scinaia 

 furcellata, to receive a plant from New Zealand. In 1876 J. G. 

 Agardh. then, recognized three varieties of Scinaia furcellata besides 

 the type, viz: var. undulata (IMont.) J. Ag.. var. australis J. Ag., and 

 var. subcostata J. xVg., — besides Sc. carnosa Harv. and Sc. Salicor- 

 nioides (Kuetz.) J. Ag. He also separated from the genus Scinaia 

 (loc. cit., p. 510), under the name Gloiophloea Scinaioidcs, a plant 

 from Australia which had previously been referred to Scinaia fur- 

 cellata. Finally, in 1884 (p. 12), J. G. Agardh made his final addition 

 to the genus Scinaia, in the form of Sci)iaia monilifonni.'i, a verA' 

 distinct, regularly constricted plant from Port Phillip, Australia, 

 collected by J. Bracebridge "Wilson. 



Til later years, only two additions have been made to tlu' ircmis 

 Scinaia. In 1901, F. S. Collins distributed a plant from Florida under 



