hamatc and | or uncinate and lobatopeltate, fibulae which constitute 



th e - .1 |, s Kim • rfac< of the frond al most to the apex, are merely 



: ,,, r i n .il mously produced a1 the apices of the branches (fig, i 



i .-■ when numei layer of short spherical or ellipsoidal swelling 



tomial constriction ; but it is only when observed in their 

 ; an undi: frond that they could possiblj be mistaken for a co 



li' t! ei the truc character of these swellings is at once revealed. 



ilmost the same words describing his so-called "cortex" of 



th( trui cortex of the preceding species U. Desfontainii (1. c. p. 74). 



iparison of the two descriptions cited, it is evident thal Agardh failed t«' 



onjugation of short latend protuberances from adjacent filaments (figs. 



fundamental character upon which we base the genus Rhipiliopsis. These 



^ations apparently always remain imperforate, and are only to I"- found in the upper 



filaments. Lower down they have already broken asunder, leaving the protuberances 



1 their respective filaments. These old protuberances are fairly numerous and vary in length. 



4. Flabellaria Lamouroux. 

 (Figs. 29—31 ; 123—125). 



Historica 1. 



The lirst record of Flabellaria petiolata [Udotea Desfontainii), the older species of this 

 genus, is to be found in Zannichelli's "De Myriophyllo pelagico" 171.1 p. 9 tab. I. where 

 the author figures the species and describes it in the following terms, without designating it 

 bj any nam< "Herbam videbis, cujus hucusque nemo meminerit, quod sciam, adeoque anony- 

 "mam, Alcyonio innatam. actis inter illius quibus ubique scatet rimulas radicibus. Folia videbis 

 "brevi pedunculo innixa. rotunda, expolita, crassiuscula, leviterque sinuosa; quaeque ad Tussila- 

 "ginem Alpinam secundam Clusii, vel ad Mathaeoli Assarinam accedant. Forum plura ex unica 

 ■protuberant radice, colore viridi, eoque satis vivido. Saporem, odoremque habet cum caeteris 

 "marinis Plantis communem ; qua propter Fucis marinis annumerandam, et ex supradictis optime 

 "describi posse censes". 



'1 lic next mention o\ this species is in 1725, when Maksim. 1 published liis Histoire 



hysique de la mer, in which he describes and figures the plant (p. 64. tabb. VI, VIL figs. 27. 28) 



the name of ".Mauve marine 011 Lactuca laciniata ou Fucus membranaceus". 11e says 



mr la superficie des feuilles, les Glandules ordinaires .... Le pied de la plante 



glanduleux, et la superficie de sou écorce est semblable au chagrin.... Le pied de la 



par le travers montre la structure de sa substance, toute de petits Canaux . . . .". 



Ginanni Ravennatj Opere postume I. 1755. ]>■ ?^- tab. 25. fig 56) next writes 



under the name of " 1 ussillagine deH'Adriatico" and says the plant reminds him 



rives a good figure 1 i it. 



» in 1813 that Lamouroux (in Ann. Mus dl list. Nat. Paris XX p. 274. tab. 12. 



nus Flabellaria with one species. /•'. Desfontainii [Conferva ftabelliformis 



