Benthic Algae — Dawson 
449 
fam. RHODOMELACEAE 
Poly sip honia acuminata Gardner 
Hollenberg, 1942^; Smith, 1944 
Monterey to La Jolla, Calif, 
Poly sip honia bajacali Hollenberg 
Hollenberg, 1961 
Isla Guadalupe, Baja Calif. 
Polysiphonia heaudettei Hollenberg 
Hollenberg, 1961 
Isla Guadalupe; Scammon Lagoon, Baja Calif.; 
Isla Socorro, Revillagigedo Arch.; Isla 
Grande, Guerrero; Bahia Potrero Grande, 
Costa Rica 
Polysiphonia bifurcata Hollenberg 
Taylor, 1945; Hollenberg, 1961 
Scammon Lagoon, Baja Calif.; Playa Blanca, 
Costa Rica; Galapagos Arch. 
Polysiphonia brodiaei (Dillwyn) Greville 
Hollenberg, 1944; Smith, 1944 
Sausalito to Santa Monica, Calif. 
Polysiphonia confusa Hollenberg 
Hollenberg, 1961; Dawson, 1959c (as P. in- 
conspicua ) 
Corona del Mar, Calif., to Desembarcadero 
de Miller, Baja Calif. 
Polysiphonia decussata Hollenberg 
Hollenberg, 1961; Taylor, 1945 
Topanga Canyon, Calif., to near Punta Malar- 
rino, Baja Calif.; Isla Guadalupe; Gala- 
pagos Arch. 
Polysiphonia ferulacea Suhr 
Dawson, 1957 
Clipperton I. 
Polysiphonia flaccidissima Hollenberg var. flac- 
cidissima 
Hollenberg, 1961 
Laguna Beach, Calif., to Panama 
Polysiphonia flaccidissima var. smithii Hollen- 
berg 
Hollenberg, 1942^; Smith, 1944 
San Francisco to San Diego, Calif. 
Polysiphonia guadalupensis Setchell & Gardner 
Hollenberg, 1961 
Isla Guadalupe, Baja Calif. 
Polysiphonia banco ckii Dawson 
Hollenberg, 1961 
Cabeza Ballena to San Jose del Cabo, Baja 
Calif, del Sur 
Polysiphonia hendryi Gardner var. hendryi 
Doty, 1947; Hollenberg, 1961 
Cape Arago, Oreg., to Isla Cedros, Baja Calif. 
Polysiphonia hendryi var. gardneri ( Kylin ) 
Hollenberg 
Scagel, 1957; Dawson, 1959c (both as P, col- 
linsii) ; Hollenberg, 1961 
British Columbia to Cabo San Lucas, Baja 
Calif. 
Polysiphonia hendryi var. compacta (Hollen- 
berg) Hollenberg 
Hollenberg, 1961 
Southern Calif, and northern Baja Calif. 
Polysiphonia hendryi var. deliquescens ( Hollen- 
berg) Hollenberg 
Scagel, 1957 (as P. collinsii var. deliques- 
cens) >; Hollenberg, 1961 
Prince William Sound, Alaska, to Oreg. 
Polysiphonia hendryi var. luxurians (Hollen- 
berg) Hollenberg 
Scagel, 1957 (as P. collinsii var. luxurians ; 
Hollenberg, 1961 
Northern Wash. 
Polysiphonia homia Setchell & Gardner 
Hollenberg, 1961 
Isla Guadalupe, Baja Calif. 
Polysiphonia howei Hollenberg 
Taylor, 1955; Hollenberg, 1958^ 
Bahia de Panama, Panama; Bahia Cobita, 
Colombia 
