The "Chytridium" clade is defined on the basis of molecular sequence data and zoospore subtype (James et al. 2000, Barr 1980). Following Barr (1980), the members of this clade all have a "Chytridium" or group I zoospore subtype. This subtype is characterized by having a cord of microtubules making up the primary rootlet. In reference to morphology, both monocentric and polycentric thallus forms are represented. The group also contains a mix of operculate and inoperculate members as well as different types of development (exogenous, endogenous).
Genera:
- Asterophlyctis
- Chytridium
- Entophlyctis luteolus
- Obelidium
- Phylctorhiza
- Physocladia
- Podochytrium
- Rhizoclosmatium
- Chytriomyces - Check out our key to species of Chytriomyces
References:
- Barr, D. J. S, and Hartmann, V. E. Zoospore ultrasturcture of three Chytridium species and Rhizoclosmatium globosum. Can. J. Bot. 54: 2000-2013. 1976.
- Longcore, J. E. Morphology, occurrence, and zoospore ultrastructure of Podochytrium dentatum sp. nov. (Chytridiales). Mycologia, 84: 183-192. 1992.
- Longcore, J. E. Morphology and zoospore ultrastructure of Chytriomyces angularis sp. nov. (Chytridiales). Mycologia, 84: 442-451. 1992.
- Longcore, J. E. Morphology and zoospore ultrastructure of Entophlyctis luteolus sp. nov. (Chytridiales): implications for chytrid taxonomy. Mycologia, 87: 25-33. 1992.