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Crypt oga mitt - « 
Order IV. Algje, Flags. 
In this order the herbage is frondose, sometimes of 
a leathery gelatinous consistence, and sometimes only 
a crust ; and the seeds are produced either in a pecu- 
liar receptacle or in the frond itself. 
Lichen. Gen. char . — (1) Receptacle roundish, 
somewhat plain, shining. (2) Dust scattered on the 
leaves. 
Lich. Script us. Lettered Lichen ; warty, whitish, 
with small black branched lines resembling letters. On 
the smooth bark of trees. 
Lich. Geographicus , Map Lichen j warty, yellow- 
ish, with black lines resembling a map. Frequent on 
rocks, as in the King’s Park at Edinburgh. 
Lich. JslandicuSf Eatable Iceland Lichen ; leafy, 
laciniated, with elevated fringed margins. On moun- 
tainous places in the Highlands and Lowlands of Scot- 
land ; on the Pentland Hills, near Edinburgh. 
Fuchs. Gen. char. — (1) Vesicles interwoven with 
hairs. (2) Vesicles strewed with imbedded grains, 
slightly prominent at the summit ; seeds solitary. 
Fucus Serratus, Sea-wrack ; with frond, plain, di- 
vided, ribbed, serrated, toothed, and tubercular termi- 
nal fructifications. On sea- rocks at low water-maik. 
The leaf is flat, radical, and about two feet long. 
Fucus VesiculosuSf Common Sea-wrack, or Sea- 
ware, In Scotland $ grows abundantly on rocks at low 
