350 DR. SARAH М. BAKER AND MISS М. Н. BOHLING ON 
egg-shaped or oval, produced at the top of short, narrow, lateral branchlets, 
which arise in the axils of indentations in the thallus and fall away later. 
The oogonium divides into four oospheres. Dicecious. 
Var. MINOR, Turner. 
Thallus 10-20 ems. long, tufted from the base. Frond ovate, hardly 
broader than the peduncle. — Air-bladders scarce. 
Hab. Attached to rock high on shore, or embedded in salt marsh. Coast 
of Hants, Portsmouth. 
Fucus nodosus B. minor, Turner, British Fuci, р. 253. 
Ascophyllum nodosum у. minor, Batters, in Journ. Bot. xl. (1902) 
Appendix, p. 50. 
Megecad LIMICOLA. 
Plant unattached by dise, dwarf, irregularly curled and twisted. 
Receptacles on long drooping branches. Reproduction vegetative. 
(а) Ecad scorpioides, Hauck. 
Thallus almost cylindrical, 20-30 ems. in length, laterally branched. 
Branches elongated, narrow. — Air-bladders absent. Receptacles rare, 
spherical or ovoid, 1-2 mm. in diameter, on long drooping branches. 
Hab. (a) Lower parts of thallus embedded in mud of salt marshes and 
the estuaries of rivers, from the Tweed to Dover.  Roundstone Bay, 
Ireland : Hunter's Island, New York. 
(0) Lying loose on the sea-bottom in sheltered lagoons. Cattegat and 
western shores of the Baltic. 
Fucus scorpioides, Hornem. in Fl. Dan. tab. 1479. 
J'ucodium nodosus var. y. scorpioides, J. Ag. Spec. Alg. i. p. 207. 
Fucus nodosus var. В. denudatus, C. А. Ag. Spee. Alg. p. 86. 
Ozothalia vulgaris scorpioides, Kütz. Tab. Phye. x. p. 8, Taf. 20. fig. y. 
Ascophyllum nodosum v. scorpioides, Rabenhorst, Krypt.-Flora v. Deutsch. 
ii. p. 289, fig. 120¢; Oltmanns, Morphologie u. Biol. d. Algen, ii. 
р. 234, fig. 530; Beiträge zur Kenntniss der Fucaceen, T. 8 and 
рр. 41-43 ; Reinke, Algenflora der Westlichen Ostsees, p. 34. 
(b) Bead Hack, Turner. 
Fronds growing in globular tufts 15-20 cms. in diameter, many radiating 
from a subcentral point, but without obvious root or attachment. Frond 
cylindrical or subcompressed, slender, much branched. Branches dichoto- 
mous.  Air-vessels elliptical, solitary, 05-1 em. in length, 0'2 em. wide, 
few, oceurring generally below the forkings of the longer branches, some- 
times wanting. Receptacles lateral, lanceolate, ovate or forked, stalked, 
pendulous, scattered, near the base of the branches. 
Hab. Muddy or sandy seashores, usually in land-locked bays and among 
