Oonephris - Algae

Sample #1: Oonephris

Figure 1: a high-resolution view of Oonephris colony surrounded by a thin membrane.  PhycoKey - an image-based key to Algae (PS Protista), Cyanobacteria, and other aquatic objects. 

 Figure 2: Oonephris clustered together in a drop of water.  Kristen Maslach, 1 September 2016

Name: Oonephris
Phylum: Chlorophyla
Family: Oocystaceae
Collection Date: 31 August, 2016
Collector's Name: Julie Maxson
Habitat: generally found in small ponds containing decaying vegetation
Location: Petitti's Garden Center, front focal pond in parking lot

Description: Unflagellated colonies of ovoid cells; can appear as single cells

Key Used: Baker, A.L. et al.  2012.  PhycoKey - an image-based key to Algae (PS Protista), Cyanobacteria, and other aquatic objects.  University of New Hampshire Center for Freshwater Biology. 

http://cfb.unh.edu/phycokey/phycokey.htm 6 Sep 2016.

Steps in keying process:

Main page: Algae (PS Protista), Cyanobacteria and other aquatic objects

Greens (Chlorophyceae): have cell walls, contain chlorophyll a and b, are (usually) green, and contain starch reserves.

Non-flagellated unicells (Chlorophyceae): non-flagellated colonies

References:

http://cfb.unh.edu/phycokey/phycokey.htm

http://www.nhm.ac.uk/our-science/data/uk-species/species/oonephris_obesa.html