Myriotrichia

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Myriotrichia is a genus of brown algae.[1]

It forms small, soft, olive-brown tufts on the surface of other plants. Filaments rarely exceed centimetres in length.[2]Template:Rp

It may grow by intercalary growth.[2]Template:Rp Its sporangia may contain one or many cavities, and emerge directly from the surface cells; they may form a ring around the main nema.[2]Template:Rp Dedicated photosynthetic machinery may be entirely absent.[2]Template:Rp

Its life history consists of alternation of phases; it has isogamous gametes, and dioecious gametophytes.[3]

At warm temperatures Script error: No such module "convert"., the alga reproduces sexually, forming single chambered "meiosporangia". At cooler temperatures, asexual reproduction took place in multi-chambered "mitosporangia".[3]

The gametophyte phase only produces gametes when day length is long; with shorter days these too reproduce asexually.[3] This is probably because the plants upon which they are epiphytic only grow in the spring.[4] The gametophyte is filamentous – while the sporophyte bears parenchyma, even though it only reaches around Script error: No such module "convert". in length.[3]

The alga has a small genome with approximately 12 chromosomes.[3]

References

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