everywhere whorled with quaternate ramelli. These same/d: are minute, + 
line long, articulated, biparted to the base, each division 3-4 times dicho- 
tomous, with blunt apices. The articulations are 2—3 times as long as 
broad. avelle mostly 4 together, at the ends of abbreviated ramuli, each 
containing several angular spores in a hyaline periderm. Teéraspores not 
observed. Colowr a full red, becoming browner in drying. The substance 
is cartilaginous, much firmer and less gelatinous than in others of the genus. 
In drying, the frond closely adheres to paper. 
PPP PDL LLDPE PEO PAE 
This plant so perfectly agrees in habit and in fructification, so 
far as this is yet known, with other species of Crowanva, that | 
think it can hardly be naturally placed in any other genus. But 
it differs from all known species by having its stem and branches 
coated with a layer of cellular tissue, so as completely to conceal 
the articulated primary filament. We have, however, in Calh- 
thamnion, in Wrangelia, and in other genera with articulated 
fronds some species with coated and some with nude filaments ; 
and why not also in Crowania ? 
In external habit, C. Agardhiana most resembles C. cnsigais, 
but is of smaller size, more divaricated in ramification, and less 
gelatinous in substance. I have named it in compliment to my 
friend Prof. J. Agardh, the founder of the genus Crowania; a 
genus which, though founded, like Wrangelia, on a single Medi- 
terranean species, is more developed in Australia than on any 
other coast. 
Fig. 1. Crovanra AGARDHIANA,—the natural size. Fig. 2. Fragment of a 
branch, with branchlets. 38. Transverse section of a branch. 4. Trans- 
verse section of a ramulus, with 4-ranked ramelli. 5. A ramellus. 6. Short 
branch, bearing favelle. 7. A favella:—the latter figures magnified. 
