Ganonema is a
genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial n ...
of
red algae, from the
Liagoraceae
Liagoraceae is a family of red algae (Rhodophyta) in the order Nemaliales. The type genus is ''Liagora'' .
It was originally called ''Helminthocladiaceae'' by J.Agardh in 1851, but P. Silva in 1980 stated that this was predated by Liagoraceae ...
family, characterised by its dichotomously branched, multiaxial
thalli
Thallus (plural: thalli), from Latinized Greek (), meaning "a green shoot" or "twig", is the vegetative tissue of some organisms in diverse groups such as algae, fungi, some liverworts, lichens, and the Myxogastria. Many of these organisms wer ...
, with
terete
Terete is a term in botany
Botany, also called plant science (or plant sciences), plant biology or phytology, is the science of plant life and a branch of biology. A botanist, plant scientist or phytologist is a scientist who specialises ...
axes."
It is closely related to ''
Liagora'', but can be distinguished in two important respects. Its
vegetative structure is distinct, as the basal cells of its cortical
fascicle
Fascicle or ''fasciculus'' may refer to:
Anatomy and histology
* Muscle fascicle, a bundle of skeletal muscle fibers
* Nerve fascicle, a bundle of axons (nerve fibers)
** Superior longitudinal fasciculus
*** Arcuate fasciculus
** Gracile fasci ...
s are
isodiametric, whereas the cells of ''Liagora'' are elongate. Also, its
reproductive
The reproductive system of an organism, also known as the genital system, is the biological system made up of all the anatomical organs involved in sexual reproduction. Many non-living substances such as fluids, hormones, and pheromones are al ...
development features "the occasional production of
carpogonial branches in clusters and the production of
spermatangia
A gametangium (plural: gametangia) is an organ or cell in which gametes are produced that is found in many multicellular protists, algae, fungi, and the gametophytes of plants. In contrast to gametogenesis in animals, a gametangium is a ha ...
in dense heads."
Species
Species in this genus include:
* ''
Ganonema codii''
* ''
Ganonema farinosum
Ganonema is a genus of red algae, from the Liagoraceae family, characterised by its dichotomously branched, multiaxial thalli, with terete axes." It is closely related to '' Liagora'', but can be distinguished in two important respects. Its v ...
''
See also
*
Algae
Algae ( , ; : alga ) are any of a large and diverse group of photosynthetic, eukaryotic organisms. The name is an informal term for a polyphyletic grouping that includes species from multiple distinct clades. Included organisms range from ...
*
Red algae
*
Algae eater
Algae eater or algivore is a common name for any bottom-dwelling or filter-feeding aquatic animal species that specialize in feeding on algae and phytoplanktons. Algae eaters are important for the fishkeeping hobby and many are commonly kept by ...
References
{{Alga-stub
Red algae genera
Nemaliales