NATURAL HISTORY. 
tubular, The fructification internal, granules of 
small dark tubercles sprinkled over the surface. 
1. Fronds plane. 
ZONARIA. 
Root downy,—frond plane,—the fructification 
adnate tubercles, arrunged in parallel lines on the 
JSrond. 
1. Z. Pavonta. E. Bot. t. 1276. (Uiva 
Pavonra.) Rocky basons at Exmouth, Tor- 
quay, &c. | 
2. Z. Avomaria. E. Bot. t. 419, (Unva 
AvromMARIA.) Near Torqnay. 
3. Z. Dicnwotoma. E, Bot. t. 774. (ULva 
DicnotToma.) Exmouth, Torquay, &c. 
ULVA. 
Root scutate ; frond plane, membranaceous, having . 
naked granules dispersed thro’ the whole in clusters. 
of about four. 
1, U. Lacruca. E. Bot. t. 1531. Attached 
to marine rocks, &c., and frequently washed up 
at the entrance of the Teign. 
2, U. Burros... EK. Bot.,t. 320. In fresh 
water ponds, &c. 
3. U. Umpriicaris. E, Bot. t, 2286. Tor- 
