90 COMMON SEAWEEDS. 



a waved margin, smaller leaves springing from the 

 mid-rib as the season advances. In the winter these 

 leaves decay, become ragged, arid the bare stem is 

 found with the fructification either tubercles on little 

 stalks or tetraspores produced in little leaf-like bodies. 

 A variety is sometimes found with lobed leaves ; the 

 mid-rib divides near the top, and the leaf consequently 

 forks. 



The substance of this plant is delicate ; it adheres 

 closely to paper, and preserves its colour admirably. 



Delesseeia SrsrosA. — I will not separate this 

 from its brother Delesseria, though you will rarely 

 find it, except after a storm, thrown up on the shore, 

 on the stems of Laminaria Digitata. It flourishes 

 at ten fathoms deep, and the jagged claret-red leaves 

 do not adhere so well to paper nor give so pretty a 

 page. The tetraspores here are imbedded in minute 

 slender processes fringing the margin. 



Delesseeia Alata (Winged Delesseria). — This is 

 beautiful, and in some places most abundant. The 

 stem is forked, branched, and little fronds like leaves 

 run up the stem and spread out thickly at the top ; 

 the colour a rich dark red. All the winter it is in a 

 ragged, sapless state, and will not adhere to the paper ; 

 but early in March the growth of young fronds begins, 

 and fruit is found of both kinds. When the granules 

 abound in the leafy processes, the colour is deepened, 

 and the whole plant is one of great beauty. 



It frequently comes up in dense tufts on the stems 

 of Laminaria Digitata. It is abundant at Shanklin ? 



