1905] Collins, Phycological Notes of Isaac Holden 229 
Mesogloia divaricata (Ag.) Kütz. 846, 867, 1143. Woodmont, on 
Chondrus; Seaside Park; Long Beach. July, Aug. 
Chordaria flagelliformis (Fl. Dan.) Ag. 382, 422, 1106, 1113. On 
stones below low water, Long Beach; on Zostera, young, Seaside 
Park. May-Aug. 
Stilophora rhizodes (Ehrh.) J. Ag. 419. 420, 644, 693, 1407. 
Attached to pebbles on sandy flats about low water mark or a little 
below; Long Beach; Black Rock; Milford; Charles Island. July, 
Aug. 
S. rhizodes forma contorta Holden. 627, 1263, 1270. Fresh Pond. 
May, July. “Fronds contorted and entangled in dense bunches on 
stones in shallow water, about one foot deep." 
Ralfsia Borneti Kuckuck. 1483b. Seaside Park. Jan. 
K. clavata (Carm.) Farlow. 1510. On stones in pools, Charles 
Island. Apr. 
R. verrucosa (Aresch.) J. Ag. 444, 484, 593, 678, 1224=P. B.- A. 
325b. 
Chorda Filum (L.) Stack. 647. Black Rock, young. July. 
Laminaria Agardhit Kjellm. (ZL. saccharina, in part.) 489, 780, 
1041, 1369, 1377, 1443, 1445, 1448, 1449, 1487, 1490, 1492, 1493, 
1504, 1544, 1549, 1553. Washed ashore, Seaside Park; The Gut ; 
Black Rock; Charles Island; Pleasure Beach; dredged, Stratford 
Shoal. Jan., Mar.—June, Oct. Fruit, Oct. “1449, Apr. 22, Old and 
new blade.” 
L. Agardht forma vittata Setchell. 1467. Black Rock Beacon. 
June. “1518. June 30. Dredged from a depth of 2 or 3 fathoms 
at low water.” 
Fucus evanescens Ag. 297, 303, 592, 789, 805. 1078, 1086, 1091, 
1370, 1488. Seaside Park ; Woodmont ; Apr.—June. 
F. platycarpus Thuret. 157, 480, 490, 1380. Rocks about low 
water mark, Stratford Shoal ; Woodmont; Cook's Point. June, Sept. 
Oct. 
F. platycarpus forma. 1423, 1537. Woodmont. Sept. A form 
intermediate between the typical one and /. Areschougii Kjellman. 
F. vesiculosus L. 1115, 1118, 1371. Long Beach; Seaside Park. 
June. 
F. vesiculosus var. spiralis (L.) Ag. 1378, 1379=P. B.-A. 680. 
Chippy Island, near The Gut. June. “Growing unattached, in 
tangled bunches, along with Ascophyllum Mackaii, the latter in dense 
