92 
the cystocarpia are “clustered near the basal dise”, and according to Kuckuck (I. €.) 
the filaments are narrower (4,5—7 y) in BATTERS’ species than in Ch. rhipidandra. 
To the description given above the following remarks may be added. The 
basal cell is fastened to the surface of the host plant by a very distinct dise con- 
sisting of a cementing substance staining intensely blue in Mayer’s hæmalum. 
The sporangia are usually alternate or more or less regularly secund (fig. 19 on 
the left), seriate, as the plant generally has a tendency to unilateral ramification. 
When each cell bears two sporangia, they are usually, but not always, opposite, 
and several pairs of sporangia are then often superposed (fig. 19 to the right). 
When the sporangium is placed on a unicellular 
branchlet, this often bears also a hair; the hair 
IC being terminal, the sporangium is then lateral on 
SEG the branchlet (fig. 19). 
| ES The antheridia are placed in characteristic, flat, 
| Se à à) usually triangular clusters consisting of 2- to 5-celled 
“he branchlets branched only on the upper side; they 
Ar are produced in a number of one to three on all 
#28 the terminal cells of the cluster, and also singly by 
A py 
( x) some of the other cells (fig. 20 A, B). 
U | cee The carpogonia are sessile on the upper part 
NAN VAT of the main filaments or on the lower part of the 
Wee branches; they are bottle-shaped, with a trichogyne 
Et LV of about the same length as the ventral part (fig. 20 
NA D, c). After fertilization the carpogonium grows out 
Val in a three-celled filament which still bears the tri- 
a chogyne or a remnant of it on the second cell (fig. 
IR 20 E, H,t). A branch is now given off from the 
HU) lowest cell, the primary filament is further divided 
TED! so that it becomes 4- or 5-celled, and it gives off 
Fig. 19. more branches from the lower cells. In fig. 20 F, 
Chantransia rhipidandra. Two spore- the primary filament is seen to be 5-celled; the 
bearing plants. 300:1. 
uppermost cell produces a carpospore, the others, 
with exception of the subterminal cell, each bear two branches which are either 
unicellular and produce directly a carpospore or become 2- or 3-celled and produce 
a carpospore in the end-cell. The ripe cystocarpium is of somewhat irregular, 
nearly globular shape; its peripheral cells are swollen and each produce a carpo- 
spore (fig. 20 D). 
This species has only been found at Frederikshavn, where it was collected in 
August 1891 growing on Porphyra umbilicalis on the outer and the inner side of the 
moles. It grew on the flat side of the fronds, in some cases so abundantly that 
the frond of Porphyra had become dull and purplish. 
Locality. Kn: Frederikshavn. 
