Phylum:
Chlorophyta
Class:
Bryopsidophyceae
Order:
Codiales
Family:
Bryopsidaceae
Bryopsis plumosa
(Hudson) C. Agardh

Green Sea Grape
Derbesia marina
(Lyngbye) Solier

Family:
Codiaceae
Sea Staghorn
Codium fragile
(Suringar) Hariot subsp. californicum (J. Agardh) Maggs et J. Kelly

Coarse Spongy Cushion
Codium ritteri
Setchell & N.L. Gardner

Smooth Spongy Cushion
Codium setchellii
N.L.Gardner

Family:
Ostreobiaceae
Ostreobium queketti
Bornet et Flahault

Class:
Cladophorophyceae
Order:
Cladophorales
Family:
Cladophoraceae
Chaetomorpha brachygona
Harvey

Chaetomorpha cannabina
(Areschoug) Kjellman

Coarse Green Sea Hair
Chaetomorpha melagonium
(F. Weber et Mohr) Kutzing

Chaetomorpha picquotiana
Montagne ex Kutzing

Cladophora columbiana
Collins

Graceful Green Hair
Cladophora sericea
(Hudson) Kutzing

Lola lubrica
(Setchell et N.L. Gardner) A. Hamel et Hamel

Rhizoclonium riparium
(Roth) Harvey

Rhizoclonium tortuosum
(Dillwyn) Kutzing

Class:
Trebouxiophyceae
Order:
Prasiolales
Family:
Prasiolaceae
Northern Emerald Carpet
Prasiola borealis
M. Reed

Prasiola crispa
(Lightfoot) Kutzing

Prasiola delicata
Setchell & N.L. Gardner

Emerald Carpet
Prasiola meridonalis
Setchell et N.L. Gardner

Green Rock Scum
Rosenvingiella polyrhiza
(Rosenvinge) P.C. Silva

Class:
Ulvophyceae
Order:
Ulotrichales
Family:
Chlorocystidaceae
Halochlorococcum moorei
(N.L. Gardner) Kornmann et Sahling

Halochlorococcum porphyrae
(Setchell & N.L. Gardner) J.A. West

Family:
Gayraliaceae
Gayralia oxysperma
(Kutzing) K.L. Vinogradova ex Scagel et al.

Family:
Gomontiaceae
Collinsiella tuberculata
Setchell et N.L. Gardner

Gomontia polyrhiza
(Lagerheim) Bornet et Flahault

Sea Cellophane
Monostroma grevillei var. grevillei
(Thuret) Wittrock

Family:
Ulotrichaceae
Arctic Sea Moss
Acrosiphonia arcta
(Dillwyn) Gain

Acrosiphonia cartilaginea
(Ruprecht) comb. nov.

Green Rope
Acrosiphonia coalita
(Ruprecht) Scagel, Garbary, Golden et M.W. Hawkes

Northern Green Rope
Acrosiphonia duriuscula
(Ruprecht) Yendo

Protomonostroma undulatum
(Wittrock) K.L. Vinogradova

False Northern Thread
Pseudothrix borealis
Hanic et S.C. Lindstrom

Spongomorpha aeruginosa
(Linnaeus) van den Hoek

Mermaid's Tresses
Ulothrix flacca
(Dillwyn) Thuret

Northern Sea Hair
Urospora neglecta
(Kornmann) Lokhorst & Trask

Urospora peniciliformis
(Roth) Areschoug

Urospora sp

Jade Necklace
Urospora wormskioldii
(Mertens ex Hornemann) Rosenvinge

Order:
Ulvales
Family:
Bolbocoleonaceae
Bolbocoleon piliferum
Pringsheim

Family:
Kornmanniaceae
Blidingia marginata
(J. Agardh) P. Dangeard

Dwarf Sea Hair
Blidingia minima var. minima
(Nageli ex Kutzing) Kylin

Blidingia subsalsa
(Kjellman) Kornmann et Sahling ex Scagel et al.

Seagrass Cellophane
Kornmannia leptoderma
(Kjellman) Bliding

Family:
Ulvaceae
Ochlochaete hystrix
Thwaites

Percursaria percursa
(C. Agardh) Rosenvinge

Ulva californica
Wille

Ulva compressa
Linnaeus

Sea Hair
Ulva intestinalis
Linnaeus

Sea Lettuce
Ulva lactuca
Linnaeus

Green String Lettuce
Ulva linza
Linnaeus

Branched String Lettuce
Ulva prolifera
O. F. Muller

Ulva rigida
C. Agardh

Ulva torta
(Mertens) Trevisan

Dark Sea Lettuce
Ulvaria obscura var. blyttii
(Kutzing) Gayral; (Areschoug) Bliding

Family:
Ulvellaceae
Pseudopringsheimia confluens
(Rosenvinge) Wille

Ulvella setchellii
P.A. Dangeard