NATURAL HISTORY. 
6. C. Gzomerara. Dillw. t. 13, and also t. 
48. (C. LHATE-vVIRENS.) 
7 C. Rupesrreis. E. Bot. t. 1699. Common 
on marine rocks—growing in dense tufts, which 
are dark green and rigid. 
& C. Pruiucipa. E. Bot. t. 1716. This 
grows in the same situations as the last, in green 
shining tufts, 
DIVISION 3. ECTOCARPOIDEE. 
- The plants of this division have filiform or capillary 
Sronds, their fructification external tubercles or cap- 
sules, and occasionally innate ones at the ends of the 
branchlets—they are with very few exceptions, marine, 
lL. Red, 
ASPEROCAULON, 
The main stem hirsute opaque, not jointed—the 
branches jointed, the fructificution of two kinds. — 
Capsules, and lanceolate pods containing rows of 
granules, 
1, A. Coccinea. Dillw.t.3. (Conr. Cocct- 
NEA.) Frequently thrown up on the sea beaches. 
POLYSIPHONIA. 
With tufted branched filaments composed of paral« 
