California Algaes (copy)

Algaes commonly seen in the California subtidal

Laminaria setchellii

Phaeophyceae (brown algaes)

Postelsia palmaeformis

Phaeophyceae (brown algaes)

Pterygophora californica

Phaeophyceae (brown algaes)

Costaria costata

Phaeophyceae (brown algaes)

Macrocystis pyrifera

Phaeophyceae (brown algaes)

Nereocystis leutkeana

Phaeophyceae (brown algaes)

Stephanocystis osmundacea

Phaeophyceae (brown algaes) —> Family Fucales

Egregia menziesii

Phaeophyceae (brown algaes)

Dictyoneurum sp.

Phaeophyceae (brown algaes)

Desmarestia sp. [acid kelp]

Phaeophyceae (brown algaes)

Calliarthroa

Rhodophyceae (red algaes)

Bossiella

Rhodophyceae (red algaes)

Gastroclonium subarticulatum

Rhodophyceae (red algaes)

Fredericqia

Rhodophyceae (red algaes)

Rhodymenia

Rhodophyceae (red algaes)

Callophyllis

Rhodophyceae (red algaes)

Cryptopleura

Rhodophyceae (red algaes)

Plocamium

Rhodophyceae (red algaes)

Mazzaella splendens

Rhodophyceae (red algaes)

Gloiocladia / fauchea

Rhodophyceae (red algaes)

Fryeela gardneri

Rhodophyceae (red algaes)

Prionitus sp.

Rhodophyceae (red algaes)

Sarcodiotheca gaudichaudii

Rhodophyceae (red algaes)

What order are the “kelps”?

Laminariales

Kelp reproductive cycle

How to tell 2 Dictyoneurum species apart

Eisenia arborea

Laminaria farlowii

Alaria marginata

• Low intertidal - very shallow subtidal

• Short stipe with very long blade, wavy margins

• Obvious midrib

Pleurophycus gardneri

• Wavy on either side of midrib

Undaria pinnatifida

Sargassum horneri

Phyllospadix scouleri

Zostera marina

Haplontic (zygotic) meiosis

• The only diploid cells are zygotes

• ex: fungi, some green algaes

Diplontic (gametic) meiosis

• The only haploid cells are gametes

• ex: animals, Fucales brown algae

Haplodiplontic (sporic) meiosis

• Alternation of generations

• ex: most seaweeds

Major algae groups

Archaeoplastida —> reds, greens, and plants

Chromista —> browns, diatoms

Ulva (green algae)

Chondracanthus corymbiferus (red algae)

Silvetia compressa (brown algae)

Erythrophyllum delesserioides (red algae)

Botryocladia pseudodichotoma (red algae)

Halosaccion glandiforme (red algae)

Polyneura latissima (red algae)

Cladophora columbiana (green algae)

Fucus distichus (rockweed)