ALGOLOGICAL LITERATURE OF 1899 93 
support of the thallus of Cutleria adspersa.” Gradually the plantlet 
assumes a funnel-shape, and the cells become differentiated into 
a peripheral layer and an internal zone. At a later stage a 
infundibuliform thallus becomes torn open, while from its base 
from the support rhizoids are given off, which give additional 
support to the plantlet. ‘A young C. adspersa is therefore com- 
posed of—(1) a support at first entirely pseudo- -parenchymatous, 
which differentiates later a superficial layer of small cells by peri- 
Cutleria.” Whether or not this growth is the result of tration 
in the oosphere of C. adspersa is doubtful, but M. re au is 0. 
by the author as age shee Soeek sai it consists, as may 
ord own heehee he has never seen the process of 
a time; but the Falkenberg-plants which resulted stock is germi- 
nated oospheres were pe similar to those produced by the 
fertilized oospheres of M. de Janczewski. It is sntaresting to see 
that the colourless hairs of ae Phaakied play a prominent part 
in these young plantlets. The author never succeeded in producing 
either a ‘‘ forme Thuret”’ or a ‘“‘ forme Church,” but, since he suc- 
ceeded in geruiiating an oosphere ecsngpe bere he confirms 
hurch in disproving the statement of MM. enberg and 
Cullarta, fertilized or ae like the zoospores of Aglao- 
Agiasznia might ate to pee light on the sitia 
e epiphytic bey of Cutleria steht is the subject 
of Chapter V., wherein the author seve the “forme Falken- 
berg” of this plant with that of C. adsper 
e final Chapter, VI., conpetie a o Rebels and conclusions,” 
full of vaeruat Pp suggestion. M. Sauvageau regards the ‘“colon- 
nette,’’ which plays the Taterinediake part between the germination 
of the oosphere and the production of the Aglaozonia plant, as a 
growth of the greatest phylogenetic importance. Its physiological 
role is insignificant from its diminutive size, but morphologically, 
as necessary to the origin of Aglaozonia, its importance is con- 
siderable. ‘It is a pro-embryo, but an atavic pro-emb 
determination of its true nature a atl be of as great weight for the 
determination of the affinities of Cutleriacee as the knowle e 
origin of the thallus and the structure of their reproductive organs, 
