118 



erect filaments, more rarely at the sides of them. It appears that the usual dis- 

 placement of the originally terminal hairs occurs also in this species, but that the 

 hairs soon disappear; the fact that the upper end of the cells is usually prominent 

 at one side is in accordance with this supposition. The hairs may appear already 

 in the two-celled stage of the plants (fig. 44 C). The erect filaments seem to be 

 always unbranched; their great number in conjunction with their small size give 

 the plant a pulvinate appearance. The cells of the erect and creeping filaments, 



as well as the sporangia, contain a 

 stellate chromatophore giving off a 

 number of branches towards the 

 periphery. The species has hitherto 

 only been found in one locality, 

 growing on Polysiphonia nigrescens 

 in May. 



Locality. SI»: pier at Spodshjerg, 

 Langeland. 



Fig. 44. 



Chantransid )iiiniilis. A—C. gciniiiiating plants, C with a hair. D, 

 the two first c'reepin(» filaments are given oil': the pyrenoids are 

 shown. E, adult plant seen from above, F, G. plants seen I'rom 

 above, G with sporangium. H. I. plants seen in vertieal section, 

 /with lateral sporangia. A—F. H, r.m-.l. G 



Fig. 45. 



Clutiilraiisia liiiinilis. .1, young plant, seen from 

 above. I!, pai t of a plant sliowing the basal layer 

 and erect filaments with terminal sporangia. C, 

 basal layer seen from below. 560 ; 1. 



14. Chautraiisia leptoneiua sp. nov. 



Thallus minutus e fills repentibus et fills erectis numerosis constructus. Fila 

 repentia irregularia, lateraliter ramosa, plerumque ut videtur inter se libera, cellulis 

 plus minus tumidis, lat. 3 — 4//., diametro sesqui- ad triplo longioribus. Spora ger- 

 minans discum parenchymaticum serius in fila repentia excrescentem gignit. Fila 

 erecta simplicia vel parce ramosa, usque ad 300 « longa, 3 — 4 /.< lata, cellulis dia- 

 metro duplo ad 5-plo longioribus, cylindraceis vel, in cellulis brevibus, leviter tu- 

 midis, chromatophorum cylindraceum pyrenoide centrali munitum continentibus. 



