118 
erect filaments, more rarely at the sides of them. It appears that the usual dis- 
placement of the originally terminal hairs oceurs 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. Sb: pier at Spodsbjerg, 
Langeland. 
Fig. 44. Fig. 45. 
Chantransia humilis. A—C, germinating plants, C with a hair. D, Chantransia humilis. A, young plant, seen from 
the two first creeping filaments are given off; the pyrenoids are above. B, part of a plant showing the basal layer 
shown. E, adult plant seen from above. F, G, plants seen from and erect filaments with terminal sporangia. C, 
above, G with sporangium. H, I, plants seen in vertical section, basal layer seen from below. 560: 1. 
I with lateral sporangia. A—F, H, I 390:1. G 300:1. 
14. Chantransia leptonema sp. nov. 
Thallus minutus e filis repentibus et filis 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 u longa, 3—4 yw lata, cellulis dia- 
metro duplo ad 5-plo longioribus, cylindraceis vel, in cellulis brevibus, leviter tu- 
midis, chromatophorum cylindraceum pyrenoide centrali munitum continentibus. 
