Colacium
Colacium Ehrenberg, 1833 (ref. ID; 4950)
[ref. ID; 1618]
Stalked individuals form colony; frequently attached to animals such as copepods, rotifers, etc.; stalk mucilaginous; individual cells pyriform, ellipsoidal or cylindrical; without flagellum; a single flagellum only in free-swimming stage; discoidal chromatophores numerous; with pyrenoids; multiplication by longitudinal fission; also by swarmer, possessing a flagellum and a stigma; fresh water. (ref. ID; 1618)
- Colacium arbuscula Stein
See; Colacium vesiculosum var. arbuscula (ref. ID; 4950)
- Colacium arcuatum Playf. (ref. ID; 4950)
- Colacium calvum Stein (ref. ID; 4950)
- Colacium cyclopicola (Gicklhorn) Bourrelly (ref. ID; 3517, 4950)
Syn; Euglena cyclopicola Gicklhorn (ref. ID; 4950)
- Colacium elongatum Playfair (ref. ID; 4950)
- Colacium epiphyticum Fritsch (ref. ID; 4950)
- Colacium gojdiscae (Prescott) Huber-Pestalozzi (ref. ID; 4950)
Syn; Euglena goidiscae Prescott (ref. ID; 4950)
- Colacium mucronatum Bourr. & Chad. (ref. ID; 4950)
- Colacium ovale Playf. (ref. ID; 4950)
- Colacium parasiticum (Sokoloff) Huber-Pestalozzi (ref. ID; 4950)
Syn; Euglena parasitica Sokoloff (ref. ID; 4950)
- Colacium physeter (Fott) Fott
See; Euglena physeter (ref. ID; 2671)
- Colacium pyrenophorum Bourr. (ref. ID; 4950)
- Colacium sanguineum Lackey (ref. ID; 4950)
- Colacium sideropus Skuja (ref. ID; 3517, 4950)
- Colacium simplex Huber-Pestalozzi (ref. ID; 4950 original paper)
- Colacium vesiculosum Ehrenberg (ref. ID; 1618, 3517, 4950)
- Colacium vesiculosum f. arbuscula (Stein) Huber-Pestalozzi (ref. ID; 1618, 3517, 4950)
Syn; Colacium arbuscula Stein (ref. ID; 4950)
- Colacium vesiculosum f. natans (Lemm.) H.-P. (ref. ID; 4950)
Descriptions
Solitary or colonial, made up of two to eight individuals; flagellate form ovoid to spindle; 7-10 elongate chromatophores along the periphery; flagellum up to twice the body length; a stigma; many paramylum bodies; palmella stage conspicuous; stalked form. (ref. ID; 1618)
Measurements
22 by 12 um. (ref. ID; 1618)