Pl. cell.aph. 2. THALASSIOPHYTZE. 62. Gigart. $75 
9. Gigartina Ceipiesiar Griffith's plum-weed. 
Thallus cartilaginous, cylindrical, threadlike, forked, 
level-topped ; tubercles later al, oblong, embracing the 
thallus. i 
Fucus Griffitsiz, Turn. Hist. 126; Engl. Bot. 1926. 
Sphzrococcus Griffitsiw, 4gardh Urs 
Gigartina Griffitsia, Lynabye Hydr. Dan. 43. 
Sea-shores ; October to December. 
Thallus 2 or 3 inches high, purplish; nae cles composed 
of horizontally radiating filaments. 
10. Gigartina acicularis. Needlelike plum-weed. 
Thallus rather cartilaginous, soft, threadlike, irregularly 
dichotomous; branches spreading, pointed ; <wigs scattered, 
short, spearshape, horizontal. 
Fucus acicularis, Turn. Hist, 126. 
Sphwrococcus acieularis, 4gardh Disp. 17. 
Sea-shores; winter. 
Thallus 2 or 8 inches long; above slightly flattened. 
11. Gigartina confervoides. Conferva plum-weed. 
Thallus threadlike, much and irregularly branched ; 
branches long, mostly simple; twigs scattered, bristlelike, 
narrower at each end; /ubercles hemispherical, scattered. 
Fucus marinus purpurascens parvus, caule et ramulis seu foliulis tereti- 
bus, Raii Syn. 50, 50. 
Fucus confervoides, Lin, S. P. 1629; Engl. Bot. 1669; Turn. Hist. 84. 
- Fucus elongatus, Fl. Norv.2, 143. 
Fucus verrucosus, Huds. Fl. Angl, 383. 
Fucus acerosus, Esper, 103. 
Fucus longissimus, Gmel. 134. 
Gigartina confervoides, Lamour. Thal. 48. 
Sphzrococcus confervoides, Agardh Syn. 35. 
Sea-shores; perennial; September and December. 
B. procerrima. Branches very long, mostly simple, rather 
naked. 
Fucus teres rubens minus ramosus in longum protensus, Dillen in Rati 
Syn, 51, 53. 
Fucus procerrimus, Esper, 133. 
Fucus longissimus, Wolf. Jacq. Coll. 1, 361. 
Ceramium longissimum, Roth Cat. 3, 116. 
y.amplexa. Thallus entangled; branches and twigs very 
numerous, crowded, twisted. 
@. gracilis. Thallus threadlike; tubercles lateral, clus- 
tered, minute, flaccid towards the tips. 
Fucus gracilis, Stackh, Ner, Brit. 100. 
