PL cell. aph. 2.THALASSIOFHYT;E. 62. Gigart. 373 
@.filicinus. Thallus very slender; lobes horizontal, di- 
lated, very blunt. 
£ Fucus filicinus, Huds. FI. Angl. 586. 
Fucus nereideus, Light f. 956. 
y. pinnatus. Thallus narrow, tri-piniiate; lobes nearly 
linear, rather blunt. 
Fucus pinnatus, Iluds. FI. Angl.b 86. 
Fucus sericeus, Gmel. 149. 
$. reniformis . Branches and twigs spreading, scattered, 
narrow at bottom, tip blunt. 
£. capillaceus. Thallus slender; upper lobes crowded, 
bristlelike, nearly upright. 
Fucus capillaceus, Gmel. 146. 
£. deformis. Thallus twisted, irregularly pinnated : lobes 
divaricated, oblong, very short, not divided. 
rj. pule hell us. Thallus hairlike, compressed, tripinnate ; 
lobes linear, clublike, blunt. 
Q. claviferus. Thallus cylindrichl, hairlike, irregularly 
divided; twigs reverse ovate; edge with minute scattered 
teeth. 
i. coronatus. Thallus compressed, irregularly branched, 
naked below; having in the middle a few, simple-, scattered 
lobes, and at top clusters of short twigs bent back. 
5. Gigartina Wigghii. IViggh’s plum-weed. 
Thallus slightly gelatinous, cylindrical, threadlike, much 
and irregularly branched; twigs very numerous, on all 
parts, bristlelike, mostly simple, scattered ; fruitbearing 
twigs lanceolate, compressed. 
Fucus Wigghii, Turn, in Lin. Tr. 6, 11 ; Turn. Hist. 102; Engl. Bot . 
1165. 
Spheerococcus Wigghii, Agardh Disp. 17. 
Hypnea Wigghii, Lamour. Thai. 
Sea-shore; annual; Midsummer. 
c. Thallus roundish , branched ; twigs threadlike ; theccE 
globular , on the end of the twigs. 
6. Gigartina asparagoides. Asparagus plum-weed. 
Thallus slightly gelatinous, cylindrical, threadlike, much 
and irregularly branched; twigs simple, spreading hori- 
zontally, bristlelike, 2-rowed, opposite, ending alternately 
in a spherical theca. 
