 |
| Figure 1: Shows the two chloroplast separated by the clear center that contains the nucleus. Crescent-shaped. |
Name: Closterium
Common Name: Green Algae
Family: Closteriaceae
Collected Date: 9/8/16
Habitat: Common in lakes, ponds, and slow moving streams. Can be abundant in sewage ponds at any time of the year but less frequent in winter.
Location: Nelson's Ledges
Description: Unicellular desmid with elongated cells tapering at both ends. Cells usually crescent shaped, never really straight. There is always two chloroplasts containing lots of pyrenoids- seperated in the middle of the cell by a clear area that contains the nucleus.
Key Used: http://www.landcareresearch.co.nz/resources/identification/algae/identification-guide/identify/guide/unicellular/cell-outline-crescent-shaped/closterium
Keying Steps:
1. Algae are unicellular- not joined to neighboring cells
2. Cell outline crescent-shaped with green content
3. Cells large and solitary containing two chloroplasts separated by clear space in cell center
Nice sample!
ReplyDelete