BOTAN ¥. 
CONTRIBUTIONS TO QUEENSLAND FLORA. 
: 
QUEENSLAND FRESHWATER ALG. 
BATRACHOSPERMUM, Roth. 
B. Dillenii (Bory.), Sirdt. Dr. M. C. Cooke, in British Freshwater 
Alge, 293, places this as a variety of B. atrum, Harv., with the 
following description :—Filaments dark-brown, very thin, lower nodes 
: as 
- extreme apical nodes confluent. Size: Cellules, ‘012 mm. diam. 
oebius says:—‘The specimens collected are 3-4 cm. 
_ lanner:—‘Sexual form: diccious, The distinctions that can 
: detected between the vegetative organs of the male and female 
_ Specimens have so small a significance, and are moreover so faint that 
_ itis not worth while to describe the male and female plants separately. 
: oy is olive-green, blackish in old age, especially in the female 
= 2 . ve e 
ation; after drying, the tint becomes darker. pe is 
Sok the branches of the first rank are as strongly developed as the 
a wa ; he size is very various; as a gene ee - _ st 
; Fissia on i tuates betw: 
and 12-13 oe ay ee those of brooks. The size fluc 
tior portions of the branches the internodes are slightly drawn in, 
ge in thickness downwards to the whorl lying beneath them ; 
ger they are t i Th 
ce» Which at the vertex; and laterally from the vertex, bears 3 or 
Secondary whor!l-branches, all siaek in the female plants, 
Me 
“ 
