Invasive SpeciesDasysiphonia

Dasysiphonia japonica
FOUND by cgiorda2018
ID Confirmed
Quality checked by Grace D
Peer reviewed by Grace D
Field Notes
A sketch of our study site.
Supporting Evidence
Photo of my evidence.
Though the stems may not be as clear, this picture shows the axial growth of our sample, which is one of the defining aspects of Dasysiphonia Japonica.
Photo of my evidence.
This photo also shows the axial growth, but more clearly presents the image of the unicellular branches coming off the multicellular main stem, which is another characteristic of the Dasysiphonia that was found in our sample.
Photo of my evidence.
The unicellular stems and the multicellular main branch are shown clearest in this picture. We also did not find any shepherds hooks, which are found on similar looking species.
Species Observation: Species Looked For
Did you find it?: 
I think I found it
Scientific name:
Dasysiphonia japonica
Common name:
Sampling method: 
Just looking around
Photo of our sampling method.
Place Studied
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Map this species
N 43.686422 °
W -70.233645 °
Observation Site Information
A photo of our study site.
Coastal - Beach or dune
Trip Information
Mackworth Island
Trip date: 
Sun, 2015-11-15 11:09
Town or city: 
Type of investigation: 
Species Survey
Time of low tide: 
Sun, 2015-11-15 06:47


You have done a great job of capturing good diagnostic features.

- Matt

Hi cgiorda2018,

I am once again impressed by your scientific sketches! You do a really great job capturing the little details of how D. japonica looks under the microscope.

Thanks for sharing,

Really nice photos and descriptions here. Sometimes it can be hard to see the multicellular main branch but you captured it well here.