CRYPTOGAMIA. 371 
tion of their fruit. The male flowers are imilar, 
whether contained like those of the L. Psiloc the sub- 
stance of the plant, or as in others, on its surface. In some 
species, as in the L. physodes, they are found on the extre- 
mities of the branches; in others on the edges, as in the 
L. farinaceus; fraxineus; in others again on the under 
ae as in ee L. Ae ilps apthosus, &c. where 
ey sometimes form circles somewhat resembling s 
as in the L, stellaris. | eee 
Pl, xvi. f. 81. Part of the plant magnified to shew 
(0 00) the male, and (m) the female flower. (nn) the 
pings which strike root ; some of them expanding at the 
end. ’ 
f, 82. The section of a stameniferous flower cut through 
perpendicularly. 
f. 83. The section of an unopened flower. 
f. 84, Section of a flower, with the ripe seeds. 
f. 85, Ripe seeds taken out. 
LICHEN physodes. 
f. 86. The male, or barren plant of its natural size. - 
. £,87. Its stameniferous extremity highly magnified. 
Some of the Fuci and Conferve have been lately 
illustrated by the accurate enquiries of Major Velley; * 
and my friend Mr. Stackhouse has_ undertaken the histo 
of the Fuci, the Ulvz, and the Conferve of the British 
shores, particularly with a view to the discovery of their 
modes of fructification; { so that we may hope soon to _ 
attain a more scientific knowledge of these obscure tribes | 
of plants. 
Usrs.—Some of the Fuci are used as food, and all of 
them, as well as the Conferva, are an useful manure, of 
the greatest importance to our farmers on the sea coast. 
The Lichens, though generally looked upon as unwor- 
thy of notice, are of great consequence in the economy of 
nature, and afford the first foundation for vegetation. The 
* See coloured figures of marine plants, with descriptions 
and observations, by Thomas Velley, Esq. fol. 1795. 
t Nereis Britannica, or a Botanic Description of the British 
Marine Plants, with drawings from nature, by John Stack- 
house, Esq. F, L. S. fol. 1795. 
: BB? 
