230 Rhodora [NOVEMBER 
beds, finely dissected, sterile. On grassy bottom above limit of ordi- 
nary high water, rarely producing little vesicles and attempts at 
fruiting. A beautiful plant when growing. It has very much the 
habit of Ascophyllum Mackaii and seems to bear the same relation 
to typical X. vesiculosus as A. Mackatt does to A. nodosum.” 
F. vesiculosus var. sphaerocarpus Farlow. 1372. Cook's Point. 
June. 
FF. vesiculosus var. laterifructus Grev. 679, 715,764. Woodmont. 
Aug., Sept., Nov. “Resembles F. ceranoides.” 
F. vesiculosus forma? 1363, 1364. Cook’s Point, on mussels 
near high water mark, in thick beds. “When young this appears to 
be a good var. spiralis ; older it develops oftentimes abnormal vesi- 
cles; rarely fruiting.” May. 
Ascophyllum Mackaii (Turn.) Holmes & Batters. 281, 3053, 
1082, 1097 =P. B.-A. 177. Mar.—May. 
A. nodosum (L.) LeJolis. 800, 1455, 1457 =P. B.-A. XV. Sea- 
side Park; Fairweather Island. Apr., May. “No. 800, herma- 
phrodite, young oogonia in same conceptacles with antheridia ; 
oogonia comparatively few, on the same branched hairs as the 
antheridia ; also sometimes arising in the regular way from the inte- 
rior wall of the conceptacle.” 
Sargassum Filipendula Ag. 855, 1416, 1421,1441. So. Norwalk; 
Seaside Park; on stones along the bar, Charles Island. Aug., 
Sept., Nov. 
S. Filipendula forma subedentatum J. Ag. 1325, 1421. Sept. 
With the type. 
Goniotrichum elegans (Chauv.) LeJolis. 179, 496, 497. Among 
Sphacelaria radicans, Seaside Park. Oct., Nov. 
G. ramosum (Thwaites) Hauck. 1169. On Ruppia, among vari- 
ous small algae, Fresh Pond. Nov. 
Bangia ciliaris Carm. 496, 507, 511, 532, 878, 888 = P. B.-A. 
88,889,895. On Zostera, Fucus vesiculosus, Sphacelaria cirrhosa, etc., 
in company with Goniotrichum, Erythrotrichia, etc. Oct.—Dec. “We 
examined No. 887 this evening, and found numerous filaments fruit- 
ing. A cell forms a number of spores which escape from a lateral 
protuberance. The spores frequently lodge and germinate on fila- 
ments of the Bangia, giving it the appearance of branching." 
B. fuscopurpurea (Dillw.) Lyng. 892, 894 = P. B.-A. 87b, goo, 
got. On rocks and woodwork, near high water mark, Yellow Mill 
Bridge; Sea wall, Seaside Park. Nov., Dec. 
