Seaweeds of San Mateo County
San Mateo County, located south of San Francisco and north of Santa Cruz, contains a wide variety of tidepools, from sandy places where Gracilaria thrives, to mudstone reef, to fantastic mixes of conglomerate rocks. These are some images of seaweed denizens of this county.
Scytosiphon lomentaria
Scytosiphon lomentaria is a littoral brown seaweed with an irregularly lobed many filamentous form. It is a member of the Phaeophyta in the order Dictyosiphonales and grows attached to shells and stones in rock-pools and in near-shore waters. The attachment to the substrate is by a small disc shaped holdfast.
Laminaria sinclairii
Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 3
Species With Barcodes: 1
Fucus distichus
Fucus distichus or rockweed is a species of brown alga in the family Fucaceae to be found in the intertidal zones of rocky seashores in the Northern Hemisphere, mostly in rock pools.
Laminaria setchellii
The following is a representative barcode sequence, the centroid of all available sequences for this species.
Winged kelp
Alaria marginata, the winged kelp, is a brown alga species in the genus Alaria. It Can grow up to 13 feet. Fronds are long and narrow with raised midrib and wavy edges. Each frond has two rows of several smooth, oblong, 5 inch spore-bearing blades at the base in winter. The base is attached to rocks.
Bull Kelp
Nereocystis (Greek for "mermaid's bladder") is a monotypic genus of kelp. It forms thick beds on rocks, and is an important part of kelp forests. There is only one species, Nereocystis luetkeana. It can grow to a maximum of 36 meters.Nereocystis has a holdfast of about 40 centimeters, and a single stipe, topped with a pneumatocyst containing carbon monoxide, from ...more ↓
feather boa kelp
Egregia menziesii is a species of kelp known commonly as feather boa kelp. It is native to the coastline of western North America from Alaska to Baja California, where it is a common kelp of the intertidal zone. It is dark brown in color, shiny and bumpy in texture, and may reach over five meters long. It grows a branching stipe from a thick holdfast. It bears long, flat, ...more ↓
Sea Palm
Postelsia, also known as the sea palm (not to be confused with the southern sea palm) or palm seaweed, is a genus of kelp and classified within brown algae. There is only one species, Postelsia palmaeformis, found along the western coast of North America, on rocky shores with constant waves. It is one of the few algae that can survive and remain erect ...more ↓
Macrocystis integrifolia
Macrocystis integrifolia is one of four species of kelp (large brown algae) in the genus Macrocystis which grows to about 6 metres (20 ft) long.
