368 6 I.Sph 0 eroc. 2 .THALASSIOPHYTiE. Pl.cell.aph. 
t. planus . Thallus leatherlike, flat, broad ; segments 
linear ; tip blunt. 
e. Mammillaris. Thallus leatherlike , channelled, forked ; 
tubercles on tie surface and edge , nipplelike. 
9. Sphcerococcus mamillosus . Nipple roundfruit * 
Thallus cartilaginous, forked, long, wedgeshape, chan- 
nelled above; segments dilated; edge not cut: theca nip- 
plelike, pedicelled on the surface and edge of the thallus; 
pedicells short. 
Furus mamillosus,* Good. Tr. Lin. Soc. 6, 174 ; r»rrt. Hist. 122; Ensk 
Sot. 1054. & 
Fucus canal iculatus /S, Huds. FI. Angl. 583. 
Fueus ceranoides «, Light/. Scot. 916. 
Fucus ceranoides, With. Bot.Arr. 4, 99. 
Fucus alveolatus, Esper , 139. 
Fucus ceranoides S, Gniel. 115, 
Spoerococcus mamillosus, Agardh Disp. 16. 
Sea-shores ; perennial. 
j3. linearis. Thallus slender, linear; tip blunt, naked. 
y. proliferus . Thallus proliferous on the surface and 
edge, wrinkled ; tubercles numerous, crowded, oblong, nip- 
plelike. 
fr. echinatus. Segments widening upwards, nearly naked 
on one side. 
Fucus echinatus, StacJch. Ner. Brit. 65. 
s. incurvatus . Thallus nearly linear, tips rounded ; tu- 
bercles nearly terminal ; peduncles bent inwards. 
f. Chondrus. Thallus threadlike at bottom , wedgeshape 
at the tip ; tubercles on the edge . 
10 . Sphceroc. membranifolius. Membraneleaved roundfruit . 
Thallus threadlike at bottom and compressed; tip ex- 
panded, wedgeshape; segments 2 -lobed, forked; tubercles 
globose, peduncled on the base of the thallus. 
Fucus membranifolius, Esper , 115; Turn. Hist. 74; Engl. Bot. 1965. 
Fucus rubens, FI. Dan. 827. 
Fucus Palmetta, Gmelin , 22. 
Sphaerococcus membranifolius, Agardh Syn. 26. 
Delesseria membrani folia, Lamour. Thai. 
Sea-shore; perennial; winter. 
| 8 . lacerus. Segments forked; lobes linear; tip acute. 
Fucus parvus cauliculis teretibus, summitatibu§ membranaceis dilatatis 
<st laceratis, Rail Syn. 44, 19, excluding Morison’a synonym. 
Fucus ceranoides y, Huds. FI. Angl. 583 . 
Fucus pseudoceranoides, Gmelin, 119. 
