containing a dense tuft of much-branched, dichotomous sporethreads, whose 

 terminal ramifications are I'ormed into strings of oblong or oval spores. 

 Sticlddia very minute, on the raraelli, varying from ovate-acute to oblong- 

 lanceolate, seldom containing more than 2-4 tetraspores. Colour a deep 

 crimson-red, either preserved in drying or changing to dull red-brown. 

 Substance membranous, not gelatinous. In drying the frond adheres, but 

 not very firmly, to paper. 



A well-marked species, whose specific name alludes to an ex- 

 ternal resemblance borne to Wrangelia velutina, a plant widely 

 differing in fructification and microscopic structure. 



The structure of the nuclear contents is different from what 

 is usual in Dasya, where we generally find simple or subsimple 

 sporethreads bearing terminal pyriform spores. Much-branched 

 sporethreads indeed occur in D. Muelleri and some others ; but 

 in those cases the spores are solitary on each branch, and pyri- 

 form. A nearer structure to that of the present species is met 

 with in B. Hajfim ; but still the agreement is not perfect : nor 

 have I noticed truly moniliform strings of spores in any other 

 species. 



Fig. 1. Dasya Wrangelioides, — the natural size. 2. Fragment of a branch, 

 with ramuli. 3. Cross section of a branch. 4. A ceramidium. 5. A spore- 

 thread from the same. 6. Seriated spores. 7. A ramellus, bearing s^/c/jt- 

 dia : — variously magnified. 



