On the Development of the Cystocarp in 
Rhodymeniales. 
BY 
REGINALD W. PHILLIPS, M.A., B.Sc. 
Professor of Botany in the University College of North Wales , Bangor. 
With Plates XVII and XVIII. 
I N the classification of the Florideae proposed by the late 
Professor Schmitz (’89), the Rhodymeninae constitute 
a group of six families, viz. : — the Sphaerococcaceae, the 
Rhodymeniaceae, the Delesseriaceae, the Bonnemaisoniaceae, 
the Rhodomelaceae, and the Ceramiaceae. This arrangement 
has been adhered to in Engler and Prantl’s PJlanzenfamilien 
(’96), the parts of which on the Rhodophyceae are now 
appearing under the names of Schmitz, Falkenberg, and 
Hauptfleisch. In this work the Rhodymeniales, as they are 
there called, are thus distinguished : — Auxiliary cells for the 
most part differentiated only after fertilization of the carpo- 
gonium : the mother-cells of the auxiliary cells are disposed 
with the carpogonium in pairs, usually constituting procarps : 
after conjugation with the egg-cell, the auxiliary cell grows 
out into gonimoblast-filaments. 
In former numbers of the Annals of Botany I have already 
published (’95 and ’96) the results of observations on a series 
of genera of Rhodomelaceae, and I have since been engaged 
in extending these observations to the other families of the 
[Annals of Botany, Vol. XI. No. XLIII. September, 1897.] 
B b 
