100 
This inconspicuous species has been found epiphylie on Polysiphonia violacea 
and nigrescens, infeompany with other species of Chantransia (virgatula, hallandica 
ete.), at several places 
but in small quanti- 
ties. It has been met 
with in May to Sep- 
tember, in depths 
from 1 to 11,5 meters, 
and was collected with 
sporangia in the same 
months. 
Localities. Kn: Krage- 
skovs Rey, KC. — Ks: D,N. 
of Isefjord, 11,5 meters. — 
Sa: AH!, N. of Fyens Hoved; 
MQ, S. of Samsø, 11,5 me- 
ters. — Su: Stone-slope at 
Helsingør (Kronborg). — 
Bw: LC, S. of Langeland, 
Chantransia moniliformis. Adult plants with?sporangia. A—C from Helsingør, Sep- 11,5 meters. — Bm: QR, 
tember, D from AH, In D full-grown sporangia, in B the sporangia have been emp- Gyldenløves Flak. 
tied and new sporangia are developing within their membranes. 390: 1. 
Group II. Frond epiphytic with a pluricellular basal layer. 
6. Chantransia Thuretii (Born.) Kylin. 
Kylin (1907) p. 119. 
Chantransia efflorescens var. Thuretii Bornet (1904) p. XVI pl. I. 
a, amphicarpa nob. 
Of this species, which is quite distinct from Ch. efflorescens (J. Ag.), as shown 
by Kyrın, I have found specimens fully agreeing with Kyrın’s description and 
drawings. Such specimens, provided with monosporangia and sexual organs, were 
met with repeatedly in July near Frederikshavn. In some cases the sporangia and 
the sexual organs occur on different branches of the same plant, but as shown by 
Kyrın, the sporangia are often situated near the sexual organs, and all the three 
kinds of organs of reproduction may then occur very close together, as is seen in 
fig. 30 B, where the same cell bears a carpogonium and a sporangium, while a 
cluster of antheridia is situated on the next branchlet. Also in fig. 31 B, the spor- 
angium is siluated close to the carpogonium and in fig. 31 A a two-celled branchlet 
is seen to bear a carpogonium, an antheridium and a sporangium. 
When not occurring together with the sexual organs the sporangia are situated 
on the inner side of the branches near the base, usually 2 or 3 together on one-celled 
branchlets, or they are sessile at the same place; more rarely the branchlets are 2- or 
3-celled. It may sometimes happen, that two sporangiferous branchlets are seated 
on the same cell, the one over the other (fig. 30 A). On maturation the spore leaves 
