| Rhipiliopsis | |
|---|---|
Scientific classification  | |
| (unranked): | Viridiplantae |
| Division: | Chlorophyta |
| Class: | Ulvophyceae |
| Order: | Bryopsidales |
| Family: | Rhipiliaceae |
| Genus: | Rhipiliopsis A. Gepp & E.S. Gepp, 1911 |
| Type species | |
| Rhipiliopsis peltata | |
| Species [1] | |
| |
Rhipiliopsis is a genus of green algae in the family Rhipiliaceae. [1] Johnson-sea-linkia is a synonym. [1]
According to Algaebase as described by Kraft (1986), the thallus height ranges from less than 5 mm to above 7 cm, non-calcified and the prostrate rhizome or digitate processes within the substratum gives rise to the blade and stalk system. The fronds are monostromatic or polystromatic having irregularly lanceolate or regularly to excentrically peltate, with siphons dichotomously branched and generally equally constricted above dichotomy. A somewhat differentiated cortex was observed on upper and lower surfaces of fronds and scattered spines occur on blade siphons for the two species with thickest blade. The stalks can be monosiphonous or multisiphonous where monosiphonous stalks are smooth, or variously covered with spinous processes. The constituent siphons cohere at scattered and isolated points by circular rings of wall thickening at tips of lateral papillae or foreshortened blade-siphon dichotomies. Heteroplastic, except possibly for Johnson-Sea-Linkia, with ovoid chloroplasts and larger reniform amyloplasts. [2]
Additional description was provided by Lagourgue and Payri in which Rhipiliopsis described as much smaller in size and more delicate than Rhipilia species and the papillae are less developed than the tenacula of Rhipilia but give a cohesive and net-like appearance to the blade. Rhipiliopsis species are characterized of a mono- or multisiphonous stipe and a mono- or pluristromatic blade (flabellate, peltate, or cyathiform). [3]
Rhipiliopsis distribution based on Algaebase is predominantly tropical, with most species known only from type and limited ranges. This coincides with the study of Lagourgue and Payri (2021) on Rhipileae and Rhipiliopsideae where, Rhipiliopsis have a pantropical distribution and none of the species they studied appeared to be cosmopolitan; instead, they have restricted distributions. [2]
Recorded collections of the genus were observed in the western and southwestern Pacific Ocean and Australia and in the Philippines. Two species are endemic to temperate coasts of southern Australia (R. peltata and R. robusta).
The genus were observed to grow commonly in low, intertidal to shallow subtidal rocky habitats on wave-exposed temperate area. The vertical growth ranges from the low intertidal to 153m. Littler and Littler (1994) reported that the deepest occurring fleshy upright alga (that can be found attached to bedrock at a depth of 210m is Rhipiliopsis profunda. [4]
Reproduction is unreported in all but type species which has been illustrated with single ovoid to pyriform, stalked zooidangia borne singly and laterally on medullary siphons.
Exploitation/harvesting/cultivation: No recorded data of cultivation
Chemical composition/natural products chemistry. Unlike other green seaweeds (Ulva and Caulerpa), the biological activities of the genus Rhipiliopsis are still unexplored.
Utilization and management: Currently, no identified utilization.
Caulerpa is a genus of seaweeds in the family Caulerpaceae. They are unusual because they consist of only one cell with many nuclei, making them among the biggest single cells in the world.
Palmaria palmata, also called dulse, dillisk or dilsk, red dulse, sea lettuce flakes, or creathnach, is a red alga (Rhodophyta) previously referred to as Rhodymenia palmata. It grows on the northern coasts of the Atlantic and Pacific Oceans. It is a well-known snack food. In Iceland, where it is known as söl[ˈsœːl̥], it has been an important source of dietary fiber throughout the centuries.
Macrocystis is a monospecific genus of kelp with all species now synonymous with Macrocystis pyrifera. It is commonly known as giant kelp or bladder kelp. This genus contains the largest of all the phaeophyceae or brown algae. Macrocystis has pneumatocysts at the base of its blades. Sporophytes are perennial and the individual may live for up to three years; stipes/fronds within a whole individual undergo senescence, where each frond may persist for approximately 100 days. The genus is found widely in subtropical, temperate, and sub-Antarctic oceans of the Southern Hemisphere and in the northeast Pacific from Baja California to Sitka, Alaska. Macrocystis is often a major component of temperate kelp forests.
Halimeda is a genus of green macroalgae. The algal body (thallus) is composed of calcified green segments. Calcium carbonate is deposited in its tissues, making it inedible to most herbivores. However one species, Halimeda tuna, was described as pleasant to eat with oil, vinegar, and salt.
Udoteaceae is a family of green algae, in the order Bryopsidales.
Bryopsis is a genus of marine green algae in the family Bryopsidaceae. It is frequently a pest in aquariums, where it is commonly referred to as hair algae.
Struvea is a genus of green macroalgae in the family Boodleaceae.
Udotea is a genus of green algae in the family Udoteaceae.
Valonia is a genus of green algae in the Valoniaceae family. The genus Ventricaria is now regarded as a synonym of Valonia.
Alaria is a genus of brown alga (Phaeophyceae) comprising approximately 17 species. Members of the genus are dried and eaten as a food in Western Europe, China, Korea, Japan, and South America. Distribution of the genus is a marker for climate change, as it relates to oceanic temperatures.
Claudea is a marine red alga genus.
Lobophora is a genus of thalloid brown seaweed of the Phylum Ochrophyta; Class Phaeophyceae.
Lobophora variegata is a species of small thalloid brown alga which grows intertidally or in shallow water in tropical and warm temperate seas. It has three basic forms, being sometimes ruffled, sometimes reclining and sometimes encrusting, and each form is typically found in a different habitat. This seaweed occurs worldwide. It is the type species of the genus Lobophora, the type locality being the Antilles in the West Indies.
Pyropia is a genus of red algae in the family Bangiaceae. It is found around the world in intertidal zones and shallow water. The genus has folding frond-like blades which are either red, brown or green. Some Pyropia species are used to create nori, and are thus important subjects for aquaculture.
Mastocarpus papillatus, sometimes called Turkish washcloth, black tar spot, or grapestone is a species of red algae in the family Phyllophoraceae. It is sometimes confused with the distantly related Turkish towel which is of a similar texture but larger. The specific epithet papillatus is due to the nipple-like projections on the female gametophyte which can give the texture of a terrycloth washcloth found at a Turkish bath.
Chondracanthus exasperatus, commonly called Turkish towel, is a species of seaweed in the family Gigartinaceae. The specific epithet exasperatus refers to the bumpy texture of the blades. This texture also leads to the common name which evokes the luxurious feel of a towel from a Turkish bath. The rough, papillae-strewn blade surface even makes it difficult to measure the temperature using infrared thermometers.
Phyllophora pseudoceranoides, the stalked leaf bearer, is a small marine red alga.
Padina boergesenii, commonly known as the leafy rolled-blade alga, is a species of small brown alga found in the tropical and subtropical western Atlantic Ocean, the Mediterranean Sea, and the Pacific Ocean. This seaweed was named in honour of the Danish botanist and phycologist Frederik Børgesen.
Callithamniaceae is a family of red algae (Rhodophyta) in the order Ceramiales. The family was first described by Friedrich Traugott Kützing in 1843.
Liagoraceae is a family of red algae (Rhodophyta) in the order Nemaliales. The type genus is LiagoraJ.V.Lamouroux.
https://florabase.dpaw.wa.gov.au/browse/profile/27215 retrieved 12-30-21
Gerald T. Kraft (1986) The green algal genera Rhipiliopsis A. & E.S. Gepp and Rhipiliella gen. nov. (Udoteaceae, Bryopsidales) in Australia and the Philippines, Phycologia, 25:1, 47-72, doi : 10.2216/i0031-8884-25-1-47.1