Hedriocystis pellucida, bar = 10 µm
Genus Hedriocystis Hertwig & Lesser, 1874
Diagnosis: Cell surrounded by a non-silicious stalked shell; shell hyaline, colorless, with small holes, pores, through which non-branching axopodia radiate; stalk not always distinct, at one species never observed; central nucleus; Schwärmer observed at two species, with one or two flagella.
Type species: Hedriocystis pellucida
Key to the species
|
1 |
Stalk longer than the test |
2 |
|
- |
Stalk shorter than the test |
|
|
2 |
Shell polygonal and/or with clear conical nipples |
3 |
|
- |
Shell circular or ovoid in circumference |
|
| 3 |
Shell polygonal, with conical nipples |
H. pellucida |
| - |
Shell with polygonal facets |
H. reticulata |
Hedriocystis brachypous - from Siemensma 1982
Published: Oct. 29, 2016, last updated: Aug. 02, 2017