MEL ANOSPERMEiE, OR OLIYE-COLOURED ALGiE. 
SYNOPSIS OF THE ORDERS OF MELANOSPERME2E. 
* Frond leathery or membranaceous , forming a compact cellular substance. 
1. Fucacehs. Spores contained in spherical cavities of the frond. 
2. Sporocitn aceze. Spores attached to external, jointed filaments, which are either 
free, or compacted into knobdike masses. 
3. Laminariaceze. Spores forming indefinite, cloudlike patches, or covering the 
whole surface of the frond. 
4. Dictyotaceze. Spores forming definite groups (sort) on the surface of the frond. 
Frond formed of jointed filaments , which are either free, or united into a 
compound body. 
5. Chordariactee. Frond cartilaginous or gelatinous, composed of vertical and 
horizontal filaments interlaced together. Spores immersed. 
6. Ectocarpacehs. Frond filiform, jointed. Spores external. 
