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.
Bryopsis hypnoides
Thicketweed is a delicate-looking seaweed, just like its family member hen pen. However, the fronds look more like tufts than feathers. It consists of a single cell with many cell nuclei, without partitions. In the Netherlands, thicketweed is only found in the delta region, particularly in the Grevelingen, and in brackish water canals. It grows well near freshwater nutrient-rich inlets.
Gelidium purpurascens
Isotype for Gelidium polystichum N.L. Gardner
Catalog Number: US 56456
Collection: Smithsonian Institution, National Museum of Natural History, Department of Botany
Verification Degree: Original publication and alleged type specimen examined
Preparation: Pressed specimen
Collector(s): N. Gardner
Year Collected: ...more ↓
Sea Lettuce
Ulva lactuca Linnaeus, a green alga in the division Chlorophyta, is the type species of the genus Ulva, also known by the common name sea lettuce.
Chondracanthus canaliculatus
Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 8
Species With Barcodes: 1
Corallina vancouveriensis
Syntype for Corallina gracilis f. densa Collins in Collins et al.
Catalog Number: US 55123
Collection: Smithsonian Institution, National Museum of Natural History, Department of Botany
Preparation: Pressed specimen
Collector(s): W. A. Setchell & R. Gibbs
Year Collected: 1898
Locality: Dillon Beach., Marin County, ...more ↓
Calliarthron tuberculosum
Calliarthron is a genus containing four species of thalloid intertidalalga. Specimens can reach around 30 cm in size. The thalli take a crustose form. The organisms lack secondary pit connections. Calliarthron reproduces by means of conceptacles; it produces tetraspores, dispores and carpospores. The genus has lignin and contains secondary cell walls, traits which are ...more ↓
Dead man's fingers
Codium fragile, known commonly as green sea fingers, dead man's fingers, felty fingers,forked felt-alga, sponge seaweed,green sponge,green fleece, and oyster thief, is an invasive species of seaweed in the family Codiaceae.
Codium setchellii
Codium setchellii is an unusual green alga, forming a sinuous blackish - green spongy crust on rocks. It lives in the mid-high intertidal zone. Codium is a multinucleate unicellular alga and ranges from Baja to Alaska.
Pyropia perforata
The following is a representative barcode sequence, the centroid of all available sequences for this species.
Common Coralline
Corallina officinalis is a calcareous red seaweed which grows in the lower and mid-littoral zones on rocky shores.
