Oe N. O. Alge. 
TAB. DCXIII. 
_ Reopvopiexia Preiss. Harv, 
Gen. Coar. Frons spongiformis, rubra, e filis articulatis, 
reticulatim connexis, versus superficiem liberis constituta 
Spherospore spherice, apicibus liberis filoram insidentes, 
pedicellate perisporio hyalino. Harv. 4 
Rhodoplexia Preissii. Harv. MSS. 
Has. In the Sea. Swan River colony, New Holland. Mr. 
Preiss, 
i 
spongiosa, mollis, nec gelatinosa, irregulariter laciniato-ramosa 
externa v. superficiaria incurva, 
lineam longa, 
Color fusco-ruber. Spherospore omnino Callithamnii. 
| 
Fig. 1. Plant: natural size. Jf. 2. Transverse section of a 
narrow part of the frond. f.3. Small fragment, highly mag 
nified, to show the capsules, or spherospore. 4 
. 
