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Dictyosphaerium

Dictyosphaerium spp. · Phytoplankton

Dictyosphaerium: Under the microscope

Under the microscope · Photo: Bryan Milstead / CC BY

NativePlanktonic algae (in the water)

How to identify Dictyosphaerium

  • Under the microscope: small round or oval green cells held at the ends of fine, branching threads
  • Whole colony sits in a clear jelly
  • In the water: not visible

Similar species

Snowella and Woronichinia have a similar radiating look but are blue green; Sphaerocystis has no branching threads.

Profile

SeasonSummer and fall.
StartsAbout 55 F and up
LightModerate light
DepthOpen water
How it spreads or reproducesAutospores
HabitatPonds, lakes and reservoirs, clear to nutrient rich.

Why it matters in a lake

A harmless colonial green found in many lake counts.

Where it is found

  • Idaho: Common
  • Oregon: Common
  • Wyoming: Common

Classification

KingdomPlantae
PhylumChlorophyta
ClassTrebouxiophyceae
OrderChlorellales
FamilyChlorellaceae
Scientific nameDictyosphaerium spp.

Need a hand?

Want to know what is in your water?

Lab counts of the algae in your lake show what is growing, how much and whether a bloom is coming.

Idaho / Wyoming (208) 501-4531Oregon (541) 280-0596