﻿PLARTE V. 



Chlorodesmis comosa Bail. et Harv. 



CODIACE/E. 

 NOM, JAP. Mayuhaki-mo. 



Chlorodesmis comosa Bail, et Harv. in Harv. Ner. Bor. Amer. Ill, 

 p. 29. ― J. Ag. Till. Alg. Syst. V, p. 50. ― Engl, et Prantl. Die Natiir!. 

 Pflanzenfam. p. 141. — Aurainvillea comosa (Bail, et Harv.) Murr. et Bood. 

 in Journ. of Bot. 1889. ― De Toni Syll. Alg., Vol. I, p. 515. 



Fronds penicillate, with or without stem, not incrustated, formed 

 of dichotomously branched filaments which are somewhat con- 

 stricted here and there, and in the constricted portions cell-wall 

 is so thickened that the protoplasm is connected only by a narrow 

 canal. The constrictions are very far separated in the most part 

 of the upper portion of the filament, but in the lower portion, 

 they are shortly separated, so that the basal portion of filament 

 appears as if somewhat moniliform. The stem (when present) 

 is short, cylindrical and sponp-v, consisting of entangled basal 

 portion of filaments and root fibres which are emitted from the 

 side of filaments. The thickness of filament in our specimens 

 measures 60—140 / ゾ， and the height of frond 2 — 7 cm. Substance 

 very flaccid and the plant having finer filaments closely adheres 

 to paper in drying, but that having thicker ones, not. Colour 

 of filament is lip'ht preen, becoming dark preen in drying and 

 that of stem is somewhat grayish green. 



Jriab. On coral reefs between tide marks. Riukiu Islands, 

 Pinnacle Islands (N. E. from Taiwan), Hiuga. 



