• Source: Myriotrichia

Myriotrichia is a genus of brown algae.
It forms small, soft, olive-brown tufts on the surface of other plants. Filaments rarely exceed centimetres in length.: 105 
It may grow by intercalary growth.: 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.: 105  Dedicated photosynthetic machinery may be entirely absent.: 107 
Its life history consists of alternation of phases; it has isogamous gametes, and dioecious gametophytes.
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".
The gametophyte phase only produces gametes when day length is long; with shorter days these too reproduce asexually. This is probably because the plants upon which they are epiphytic only grow in the spring. The gametophyte is filamentous – while the sporophyte bears parenchyma, even though it only reaches around 4 cm (2 in) in length.
The alga has a small genome with approximately 12 chromosomes.




References

Kata Kunci Pencarian:

• Myriotrichia
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• List of brown algal genera
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