- Myriotrichia
-
Myriotrichia 
The gametophyte of M. clavaeformis. Click image for explanation of labelling. Scientific classification Kingdom: Chromalveolata Division: Heterokontophyta Class: Phaeophyceae Order: Ectocarpales Family: Chordariaceae Genus: Myriotrichia Species - M. adriatica
- M. canariensis
- M. clavaeformis (formerly M. repens)
- M. densa
- M. filiformis
- M. harveyana
- M. occidentalis
- M. protasperococcus
- M. scutata
- M. subcorymbosa
Myriotrichia is a genus of brown alga.[2]
It forms small, soft, olive-brown tufts on the surface of other plants. Filaments rarely exceed centimetres in length.[3]:105
It may grow by intercalary growth.[3]:105 Its sporangia may contain one or many cavities, and emerge directly from the surface cells; they may form a ring around the main nema.[3]:105 Dedicated photosynthetic machinery may be entirely absent.[3]:107
Its life history consists of alternation of phases; it has isogamous gametes, and dioecious gametophytes.[4]
At warm temperatures 18 °C (64 °F), the alga reproduces sexually, forming single chambered "meiosporangia". At cooler temperatures, asexual reproduction took place in multi-chambered "mitosporangia".[4]
The gametophyte phase only produces gametes when day length is long; with shorter days these too reproduce asexually.[4] This is probably because the plants upon which they are epiphytic only grow in the spring.[5] The gametophyte is filamentous – while the sporophyte bears parenchyma, even though it only reaches around 4 cm (2 in) in length.[4]
The alga has a small genome with approximately 12 chromosomes.[4]
References
- ^ Myriotrichia - Nomen.at - animals and plants
- ^ Oltmanns, Freidrich (1904) (in German). Morphologie und biologie der Algen. 1
- ^ a b c d F. E. Fritsch (1945). The Structure and Reproduction of the Algae.. II. Cambridge, England: Cambridge University Press
- ^ a b c d e Peters, Akira F.; Marie, Dominique; Scornet, Delphine; Kloareg, Bernard; Mark Cock, J. (2004). "Proposal Of Ectocarpus Siliculosus (Ectocarpales, Phaeophyceae) As A Model Organism For Brown Algal Genetics And Genomics1,2". Journal of Phycology 40 (6): 1079. doi:10.1111/j.1529-8817.2004.04058.x.
- ^ Peters, Akira (1992). "Culture studies on the life history of Dictyosiphon hirsutus (Dictyosiphonales, Phaeophyceae) from South America". European Journal of Phycology 27 (2): 177. doi:10.1080/00071619200650181.
Categories:- Chordariaceae
- Epiphytes
- Phaeophyceae stubs
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