''Laurencia'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

red algae Red algae, or Rhodophyta (, ; ), are one of the oldest groups of eukaryotic algae. The Rhodophyta also comprises one of the largest phyla of algae, containing over 7,000 currently recognized species with taxonomic revisions ongoing. The majority ...

that grow in temperate and tropical shore areas, in

littoral The littoral zone or nearshore is the part of a sea, lake, or river that is close to the shore. In coastal ecology, the littoral zone includes the intertidal zone extending from the high water mark (which is rarely inundated), to coastal areas ...

sublittoral The littoral zone or nearshore is the part of a sea, lake, or river that is close to the shore. In coastal ecology, the littoral zone includes the intertidal zone extending from the high water mark (which is rarely inundated), to coastal area ...

habitats, at depths up to .

Description

''Laurencia'' species have a thallus that is erect or

decumbent This glossary of botanical terms is a list of definitions of terms and concepts relevant to botany and plants in general. Terms of plant morphology are included here as well as at the more specific Glossary of plant morphology and Glossary o ...

with

distichous In botany, phyllotaxis () or phyllotaxy is the arrangement of leaves on a plant stem. Phyllotactic spirals form a distinctive class of patterns in nature. Leaf arrangement The basic arrangements of leaves on a stem are opposite and alterna ...

, whorled or radial branch arrangement.

Taxonomy and Nomenclature

The genus name of ''Laurencia'' is in honour of Louis Jean de La Laurencie (1768-1829), who was a French Naval officer, Director of the

University of Limoges The University of Limoges (''Université de Limoges'') is a French public university, based in Limoges. Its chancellor is the rector of the Academy of Limoges (an administrative district in France for education and research). It counts more than ...

and also a friend of the author, Jean Vincent Félix Lamouroux. The genus was

circumscribed In geometry, the circumscribed circle or circumcircle of a polygon is a circle that passes through all the vertices of the polygon. The center of this circle is called the circumcenter and its radius is called the circumradius. Not every polyg ...

Jean Vincent Félix Lamouroux Jean Vincent Félix Lamouroux (3 May 1779 – 26 March 1825) was a French biologist and naturalist, noted for his seminal work with algae. Biography Lamouroux was born in Agen in the Aquitaine of southwestern France, the son of Claude Lamouroux, ...

in Ann. Mus. Natl. Hist. Nat. vol.20 on page 130 in 1813. It included an initial description of eight species which then subsequently underwent taxonomic revisions. The genus belongs to order Ceramiales reported to have 137 species, with a rich body of knowledge spanning for more than 50 years of research. ''Laurencia'' belongs to the family Rhodomelaceae which is considered to be one of the largest marine red algae family, estimated to have 125 genera and 700 species all over the world. In Laurenciae, a tribe consisting of eight genera, have a taxonomic group called "''Laurencia complex''" or ''Laurencia'' sensu lato which includes six of eight genera, ''Chondrophycus, Laurencia, Laurenciella, Osmundea, Palisada,'' and ''Yuzurua''.

Morphology

''Laurencia'' is a small to medium sized red algae which may appear to be iridescent with thalli reaching up to 40 cm. Thalli can be branching, which can either be bilateral or spread in all directions. Its appendages can be rhizoidal or discoidal in appearance on stoloniferous holdfasts. Branch shape appears to be flat or cylindrical in morphology. Branchlets may be slightly rigid with a shape that may be blunt, truncate or claviform. ''Laurencia'' has shown high diversity as a genus, with species having distinct features that can easily be determined within the ''Laurencia'' complex. Molecular studies using rbcL (RuBisCO, Ribulose-1,5-Bisphosphate Carboxylase Oxygenase, Large chain) have uncovered evidences which divided the ''Laurencia'' complex, identiying the genus ''Laurenciella,'' which shares similar morphology with ''Laurencia'' but has a different rbcL sequence.

Distribution

''Laurencia'' can be found all over the world, in particular in tropical and subtropical regions with warmer waters. Its habitats range from tide pools, reef flats, mud flats, and a variety of hard substrates (e.g. rocks, corals), within intertidal and subtidal zones up to 65 m. It is also described as "turf-forming" wherein it can cover a majority of hard substrate in some areas. In Myanmar, it can be found growing together with some species of ''Cladophora, Chaetomorpha, Dictyota, Gelidium, Ceramium, Caloglossa, Catenella, Polysiphonia, Acanthophora,'' and ''Bostrychia''.

Ecology

''Laurencia'' has numerous ecological roles, serving as refuge for different marine organisms in areas where they grow abundantly, forming forests. They are also hosts of various mircoorganisms and parasitic algae, known as ''Janczewskia'.'' As producers, they are also fed on by some grazers such as crabs, queen conch, and sea hares despite its chemical deterrent. The growth of ''Laurencia'' is significantly affected by changes in nutrient availability and temperature. The effects of pollution in ''Laurencia'' are somewhat inconsistent showing its adaptability in Indian Ocean but markedly showed a decrease in biomass in polluted areas in the Mediterranean. Space within the environment is also a necessity for ''Laurencia'' survival. In field trials, ''Laurencia'' tends to inhibit coral larvae dispersal resulting to higher mortality when the algae is present.

Life History

''Laurencia'' grows throughout the year, with spermatangial individuals appearing from early August to late September while cystocarpic ones appear from mid-August to late October. From July to October, mature tetrasporangial plants appear. Gametophytic individuals are dioecious in nature, typically developed on the branchlets, but can be present in the main branch as well. Male gametophytes contain spermatangia on trichoblast while female gametophytes contain carpogonia, representing the haploid phase. Two diploid phases occur in ''Laurencia'': one with carpogonia and carpospore and the other, with tetrasporangia. Therefore, ''Laurencia'' undergoes three phases in its life cycle: one haploid phase and two diploid phases, consistent to the ''Polysiphonia'' triphasic life history.

Cultivation and Exploitation

A growing interest in the cultivation of ''Laurencia brongniartii'' has emerged due to its potential to be a newfound source for antibiotics. The common method is indoor tank culture, utilizing an excised apical tip from a thalli sample. Initial trials have confirmed its viability for culture providing opportunities for personnel with little to no experience in algae cultivation. The cost of production is relatively low, with maintenance costs at its core. Small-scale operations may be profitable in maximizing algae production, however more studies are needed to evaluate these conditions.

Chemical Composition

''Laurencia'' species are known to have several natural products exhibiting numerous biological activities such as chemical defense against grazers, anti-fouling chemical affecting ''Perna perna'' attachment, and anti-fouling activities. In addition, ''Laurencia'' is known to be an abundant source of halogenated metabolites, including a variety of terpenes (e.g. sesquiterpenes, diterpenes, triterpenes, and C₁₅ acetogenins). In Vietnam, ''L. snackeyi'' may be a potential species to evaluate new chemical races, similar to ''L. nipponica'' seeing how these may indicate similarities in morphology but differences in chemical content subject to geographical distribution.

Utilization and Management

A total of 1047 secondary metabolites have been extracted from ''Laurencia'' and ''Aplysia'' species since 2015. The diverse chemical composition of ''Laurencia'' has been subject to numerous research mainly attributed to both environmental and genetic factors. For years, humans have utilized ''Laurencia'' as food, medicinal products, fertilizers, and from recent research, an abundant source of pharmacological significance. The commercialization of the species may require further research in order to optimize culture conditions and eventually, harvest greater yield and develop a more systematic cultivation system.

Species

AlgaeBase AlgaeBase is a global species database of information on all groups of algae, both marine and freshwater, as well as sea-grass. History AlgaeBase began in March 1996, founded by Michael Guiry. Text was copied from this source, which is avai ...

, a database with detailed information on species of ''Laurencia'', includes 137 taxonomically accepted species , and differentiates these from a further ~375 entries of uncertain taxonomic status; it further delineates homotypic or heterotypic

synonyms A synonym is a word, morpheme, or phrase that means exactly or nearly the same as another word, morpheme, or phrase in a given language. For example, in the English language, the words ''begin'', ''start'', ''commence'', and ''initiate'' are all ...

. Commonly observed species of ''Laurencia'' include the shallow

subtidal The neritic zone (or sublittoral zone) is the relatively shallow part of the ocean above the drop-off of the continental shelf, approximately in depth. From the point of view of marine biology it forms a relatively stable and well-illuminated ...

Laurencia nidifica ''Laurencia'' is a genus of red algae that grow in temperate and tropical shore areas, in littoral to sublittoral habitats, at depths up to . Description ''Laurencia'' species have a thallus that is erect or decumbent with distichous, whorle ...

'' (Hawaii), '' Laurencia pacifica'' (California), and '' Laurencia thyrsifera'' (New Zealand). Species seen in the British Isles include '' Laurencia hybrida'', ''

Laurencia obtusa ''Laurencia'' is a genus of red algae that grow in temperate and tropical shore areas, in littoral to sublittoral habitats, at depths up to . Description ''Laurencia'' species have a thallus that is erect or decumbent with distichous, whorle ...

'', ''

Laurencia osmunda ''Laurencia'' is a genus of red algae that grow in temperate and tropical shore areas, in littoral to sublittoral habitats, at depths up to . Description ''Laurencia'' species have a thallus that is erect or decumbent with distichous, whorle ...

'', '' Laurencia pinnatifida'', ''

Laurencia pyramidalis ''Laurencia'' is a genus of red algae that grow in temperate and tropical shore areas, in littoral to sublittoral habitats, at depths up to . Description ''Laurencia'' species have a thallus that is erect or decumbent with distichous, whorle ...

'', and ''

Laurencia truncata ''Laurencia'' is a genus of red algae that grow in temperate and tropical shore areas, in littoral to sublittoral habitats, at depths up to . Description ''Laurencia'' species have a thallus that is erect or decumbent with distichous, whorle ...

''. The

World Register of Marine Species The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive list of names of marine organisms. Content The content of the registry is edited and maintained by scientific specialist ...

lists the following species as accepted:Guiry, M.D. & Guiry, G.M. (2018). AlgaeBase. World-wide electronic publication, National University of Ireland, Galway (taxonomic information republished from AlgaeBase with permission of M.D. Guiry). Laurencia J.V.Lamouroux, 1813. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=143914 on 2018-11-01 *''

Laurencia aguilar-rosasorum ''Laurencia'' is a genus of red algae that grow in temperate and tropical shore areas, in littoral to sublittoral habitats, at depths up to . Description ''Laurencia'' species have a thallus that is erect or decumbent with distichous, whorle ...

'' J.N.Norris, 2014 *''

Laurencia aldingensis ''Laurencia'' is a genus of red algae that grow in temperate and tropical shore areas, in Littoral zone, littoral to Littoral zone#Sublittoral zone, sublittoral habitats, at depths up to . Description ''Laurencia'' species have a thallus that ...

'' Saito &

Womersley Womersley is a village in the Selby District, in the English county of North Yorkshire. The parish population at the 2011 census (including Stapleton and Walden Stubbs) was 515. It is near the towns of Selby, Askern and Pontefract. It is clos ...

, 1974 *''

Laurencia alsidioides ''Laurencia'' is a genus of red algae that grow in temperate and tropical shore areas, in littoral to sublittoral habitats, at depths up to . Description ''Laurencia'' species have a thallus that is erect or decumbent with distichous, whorle ...

'' P.L.Crouan & H.M.Crouan, 1865 (''

species inquirenda In biological classification, a ''species inquirenda'' is a species of doubtful identity requiring further investigation. The use of the term in English-language biological literature dates back to at least the early nineteenth century. The term t ...

'') *''

Laurencia arbuscula ''Laurencia'' is a genus of red algae that grow in temperate and tropical shore areas, in littoral to sublittoral habitats, at depths up to . Description ''Laurencia'' species have a thallus that is erect or decumbent with distichous, whorl ...

Sonder Sonder may refer to: Geography *Mount Sonder, mountain in Australia *Sonder, village in Minahasa Regency, Indonesia People *Otto Wilhelm Sonder (1812–1881), German botanist and pharmacist Other uses * Sonder (Dermot Kennedy album), ''Sonder'' ( ...

, 1845 *'' Laurencia batracopus'' ( Bory de Saint-Vincent) Greville, 1830 *'' Laurencia boryi'' De Notaris, 1842 *'' Laurencia botrychioides''

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, 1855 *'' Laurencia botryocarpa'' Shperk, 1869 *'' Laurencia botryoides'' ( C.Agardh)

Gaillon Gaillon () is a commune in the Eure department in northern France. History The origins of Gaillon are not really known. In 892, Rollo, a Viking chief, might have ravaged Gaillon and the region, before he became the first prince of the Normans an ...

, 1828 *'' Laurencia brachyclados'' Pilger, 1920 *'' Laurencia brasiliana'' G.Martens, 1871 *'' Laurencia brongniartii'' J.Agardh, 1841 *'' Laurencia caduciramulosa''

Masuda is a city located in Shimane Prefecture, Japan. The city was founded on August 1, 1952. As of December 2021, the city has a population of 44,976. As of December 2019, the city has a population of 46,209. As of March 2017, the city has a popula ...

& Kawaguchi, 1997 *''

Laurencia californica ''Laurencia'' is a genus of red algae that grow in temperate and tropical shore areas, in littoral to sublittoral habitats, at depths up to . Description ''Laurencia'' species have a thallus that is erect or decumbent with distichous, whorle ...

'' ( Kützing) Kützing, 1865 *'' Laurencia calliclada''

, 1997 *'' Laurencia calliptera'' Kützing, 1865 *'' Laurencia canaliculata'' J.Agardh *'' Laurencia caraibica'' P.C.Silva, 1972 *'' Laurencia caspica'' A.D.Zinova & Zaberzhinskaya, 1967 *'' Laurencia catarinensis'' Cordeiro-Marino &

Fujii Fujii (written: lit. "well of wisteria") is a Japanese surname. Notable people with the surname include: * , professional baseball catcher * , Japanese astronomer * , professional baseball outfielder * , football player * Don Fujii, ring name of w ...

, 1985 *'' Laurencia cervicornis''

, 1853 *'' Laurencia chauvinii'' Bory de Saint-Vincent *'' Laurencia chilensis'' De Toni,

Forti Forti Corse, commonly known as Forti, was an Italian motor racing team chiefly known for its brief and unsuccessful involvement in Formula One in the mid-1990s. It was established in the late 1970s and competed in lower formulae for two decades ...

& M.A.Howe, 1920 *'' Laurencia chinensis'' C.K.Tseng, 1943 *'' Laurencia chondrioides'' Børgesen, 1918 *'' Laurencia cladonioides'' Kützing *'' Laurencia clarionensis'' Setchell & Gardner, 1937 *'' Laurencia clavata''

, 1853 *'' Laurencia clavifera'' Suhr *'' Laurencia claviformis'' Børgesen, 1924 *'' Laurencia coelenterata'' D.L.Ballantine & Aponte, 1995 *'' Laurencia complanata'' ( Suhr) Kützing, 1849 *'' Laurencia composita''

Yamada Yamada (山田, ) is the 12th most common Japanese surname. Notable people with the surname include: *, Japanese model, actress and idol *, Japanese field hockey player *, Japanese illustrator and manga artist *, Japanese rugby union player *, Ja ...

, 1931 *'' Laurencia condaoensis'' Pham Hoàng Hô *'' Laurencia congesta''

Taylor Taylor, Taylors or Taylor's may refer to: People * Taylor (surname) ** List of people with surname Taylor * Taylor (given name), including Tayla and Taylah * Taylor sept, a branch of Scottish clan Cameron * Justice Taylor (disambiguation) Pl ...

, 1945 *'' Laurencia coronopus'' J.Agardh, 1852 *'' Laurencia corymbifera'' Kützing *'' Laurencia corymbosa'' J.Agardh, 1852 *'' Laurencia crassifrons'' P.L.Crouan & H.M.Crouan *'' Laurencia crustiformans'' K.J.McDermid, 1989 *'' Laurencia cryptoclada'' Kützing, 1866 *'' Laurencia cyanosperma'' (

Delile Alire Raffeneau Delile (23 January 1778, in Versailles – 5 July 1850, in Montpellier) was a French botanist. Biography Delile studied botany with Jean Lemonnier, and was in the Paris medical school in 1796. Egypt Delile participated in Napole ...

)

, 1828 *'' Laurencia cyanosperma''

ex J.V.Lamouroux, 1813 *'' Laurencia cylindrica'' ( Kützing) Kützing *'' Laurencia cymosa'' Kützing, 1865 *'' Laurencia decidua'' E.Y.Dawson, 1954 *'' Laurencia decumbens'' Kützing, 1863 *'' Laurencia dendroidea'' J.Agardh, 1852 *'' Laurencia densissima'' Setchell &

N.L.Gardner Nathaniel Lyon Gardner (February 26, 1864 – August 15, 1937), was an American phycologist and mycologist who taught at the University of California, Berkeley, where he was the curator of the University and Jepson Herbaria, University Herbarium. ...

, 1937 *'' Laurencia depauperata'' Zanardini *'' Laurencia distichophylla'' J.Agardh, 1852 *'' Laurencia elata'' ( C.Agardh) J.D.Hooker &

, 1847 *'' Laurencia epiphylla'' F.Boisset & J.C.Lino, 1998 *'' Laurencia ericoides'' Kützing *'' Laurencia fasciculata'' (

Turner Turner may refer to: People and fictional characters *Turner (surname), a common surname, including a list of people and fictional characters with the name * Turner (given name), a list of people with the given name *One who uses a lathe for turni ...

) Greville, 1830 *'' Laurencia fastigiata'' Montagne, 1846 *'' Laurencia fenicalli'' J.N.Norris, 2014 *'' Laurencia filiformis'' ( C.Agardh) Montagne, 1845 ** ''Laurencia filiformis'' f. ''decussata'' A.B.Cribb *'' Laurencia flagelliformis'' J.Agardh *'' Laurencia flexuosa'' Kützing, 1849 *'' Laurencia foldatsii'' N.Rodríguez Rios, 1981 *'' Laurencia forsteri'' ( Mertens ex

) Greville, 1830 *'' Laurencia galtsoffii'' M.A.Howe, 1934 *'' Laurencia gardneri'' Hollenberg, 1943 *'' Laurencia glomerata'' ( Kützing) Kützing, 1849 *'' Laurencia gracilis'' J.D.Hooker &

, 1849 *'' Laurencia griseaviolacea'' M.J.Wynne, 2017 *'' Laurencia hamata''

, 1932 *'' Laurencia hancockii'' E.Y.Dawson, 1944 *'' Laurencia heteroclada''

, 1855 *'' Laurencia hongkongensis'' C.K.Tseng, C.F.Chang, E.Z.Xia & B.M.Xia, 1980 *'' Laurencia humilis'' Setchell &

, 1930 *'' Laurencia indica''

Hauck Hauck is a Germans, German patronymic family name, derived from the Germanic given name and surname Hugo (name), Hugo, meaning "Bright in Mind and Spirit" or "intelligence".:fr:Albert Dauzat, ''Les noms et prénoms de France'', éditions Larousse, 1 ...

, 1888 ** ''Laurencia indica'' var. ''nidifica''

, 1888 *'' Laurencia intercalaris'' K.W.Nam, 1994 *'' Laurencia intricata'' J.V.Lamouroux, 1813 *'' Laurencia iriei'' J.N.Norris *'' Laurencia irieii'' J.N.Norris *'' Laurencia japonensis'' T.Abe &

, 1998 *'' Laurencia johnstonii'' Setchell & Gardner, 1924 *'' Laurencia lageniformis''

Suzuki is a Japan, Japanese multinational corporation headquartered in Minami-ku, Hamamatsu, Japan. Suzuki manufactures automobiles, motorcycles, All-terrain vehicle, all-terrain vehicles (ATVs), outboard motor, outboard marine engines, wheelchairs ...

, 1997 *'' Laurencia lajolla'' E.Y.Dawson, 1958 *'' Laurencia laurahuertana'' Mateo-Cid, Mendoza-González, Senties & Diaz-Larrea, 2014 *'' Laurencia laxa'' ( R.Brown ex

)

, 1828 *'' Laurencia ligulata'' E.Y.Dawson, 1963 *'' Laurencia lutea'' J.V.Lamouroux *'' Laurencia mariannensis''

, 1931 *'' Laurencia masonii'' Setchell &

, 1930 *'' Laurencia maxineae'' E.Y.Dawson, 1944 *'' Laurencia mcdermidiae'' I.A.Abbott, 1996 *'' Laurencia mediocris'' Setchell &

, 1937 *'' Laurencia melanothrix'' ( Bory) Kützing *'' Laurencia mexicana'' Kützing *''

Laurencia microcladia ''Laurencia'' is a genus of red algae that grow in temperate and tropical shore areas, in littoral to sublittoral habitats, at depths up to . Description ''Laurencia'' species have a thallus that is erect or decumbent with distichous, whorle ...

'' Kützing, 1865 *'' Laurencia minuscula'' Schnetter, 1976 *'' Laurencia minuta'' H.Vandermeulen, Garbary & Guiry, 1990 ** ''Laurencia minuta'' subsp. ''scammaccae'' G.Furnari & Cormaci, 1990 *'' Laurencia moretonensis'' A.B.Cribb, 1958 *'' Laurencia multiflora'' Kützing, 1865 *'' Laurencia nana'' ( C.Agardh) Greville, 1830 *'' Laurencia nangii''

, 1997 *'' Laurencia nanhaiensis'' L.Ding, B.Huang, B.M.Xia & C.K.Tseng, 2007 *'' Laurencia natalensis'' Kylin, 1938 *''

'' J.Agardh, 1852 ** ''Laurencia nidifica'' var. ''tenuior''

*'' Laurencia nipponica''

, 1931 *'' Laurencia nuda'' Suhr, 1840 *''

'' ( Huds.) J.V.Lamouroux, 1813 -

type species In zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the species that contains the biological type specimen ...

** ''Laurencia obtusa'' var. ''compacta'' A.B.Cribb, 1958 ** ''Laurencia obtusa'' var. ''densa''

** ''Laurencia obtusa'' var. ''divaricata''

, 1931 ** ''Laurencia obtusa'' var. ''gracilis'' ( C.Agardh) Zanardini, 1847 ** ''Laurencia obtusa'' f. ''laxa'' ** ''Laurencia obtusa'' var. ''mollissima'' A.B.Cribb, 1958 ** ''Laurencia obtusa'' var. ''pulvinata''

Feldmann Feldmann is a German surname. Notable people with the surname include: *Anja Feldmann (born 1966), German computer scientist * Else Feldmann (1884-1942), Austrian writer and journalist *Gyula Feldmann (1880-1955), Jewish Hungarian football player an ...

** ''Laurencia obtusa'' var. ''pyramidalis''

, 1849 ** ''Laurencia obtusa'' f. ''pyramidata'' ( J.Agardh) Van Heurck, 1908 ** ''Laurencia obtusa'' var. ''pyramidica'' J.Agardh ** ''Laurencia obtusa'' var. ''racemosa'' Kützing, 1865 ** ''Laurencia obtusa'' var. ''rigidula'' Grunow, 1874 *'' Laurencia obtusiuscula'' Setchell & Gardner, 1924 ** ''Laurencia obtusiuscula'' var. ''corymbifera'' Setchell & Gardner, 1924 ** ''Laurencia obtusiuscula'' var. ''laxa'' Setchell & Gardner, 1924 *'' Laurencia okamurae''

, 1931 *'' Laurencia oliveirana'' Yoneshigue, 1985 *'' Laurencia omaezakiana''

, 1997 *'' Laurencia oophora'' Kützing, 1865 *'' Laurencia oppositoclada''

*'' Laurencia oppositocladia''

, 1945 *'' Laurencia ovalis'' ( Huds.)

Frauenfeld Frauenfeld (Alemannic: ''Frauefäld'') is the capital of the canton of Thurgau in Switzerland. The official language of Frauenfeld is (the Swiss variety of Standard) German, but the main spoken language is the local variant of the Alemannic Sw ...

*'' Laurencia pacifica'' Kylin, 1941 *'' Laurencia paitensis'' W.R.Taylor, 1947 *'' Laurencia pannosa'' Zanardini, 1872 *'' Laurencia parvula'' Børgesen, 1937 *'' Laurencia patentissima'' ützing, 1865 *'' Laurencia peninsularis'' Stegenga, J.J.Bolton & R.J.Anderson, 1987 *'' Laurencia peninsularis''

, 1945 *'' Laurencia pinnata''

, 1931 *'' Laurencia pinnatifida'' ( S.G.Gmel.) Lamouroux *'' Laurencia pistillaris'' J.V.Lamouroux, 1822 *'' Laurencia platyclada'' Børgesen, 1934 *'' Laurencia ptychodes'' A.B.Cribb, 1983 *'' Laurencia pumila'' ( Grunow) Papenfuss, 1943 *''

'' Bory de Saint-Vincent ex Kützing, 1849 *'' Laurencia pyramidata'' Bory de Saint-Vincent, 1852 *'' Laurencia pyrifera'' ( Kützing) Kützing *'' Laurencia radicans'' ( Kützing) Kützing, 1849 *'' Laurencia richardsii'' E.Y.Dawson, 1954 *'' Laurencia rigida'' J.Agardh, 1876 *'' Laurencia saitoi'' L.P.Perestenko, 1980 *'' Laurencia scrippsensis'' E.Y.Dawson, 1944 *'' Laurencia setacea'' Kützing *'' Laurencia shepherdii'' Saito &

, 1974 *'' Laurencia silvae'' J.F.Zhang & B.M.Xia, 1983 *'' Laurencia similis'' K.W.Nam & Y.Saito, 1991 *'' Laurencia singaporensis'' Zanardini ex De Toni &

Levi Levi (; ) was, according to the Book of Genesis, the third of the six sons of Jacob and Leah (Jacob's third son), and the founder of the Israelite Tribe of Levi (the Levites, including the Kohanim) and the great-grandfather of Aaron, Moses and M ...

, 1888 *'' Laurencia snackeyi'' ( Weber-van Bosse) M.Masuda, 1997 *'' Laurencia snyderae'' E.Y.Dawson, 1945 ** ''Laurencia snyderae'' var. ''guadalupensis'' E.Y.Dawson, 1963 *'' Laurencia spicifera''

, 1881 *'' Laurencia spinulifera'' Kützing, 1865 *'' Laurencia subcolumnaris'' Børgesen, 1954 *'' Laurencia subcorymbosa'' E.Y.Dawson, 1963 *'' Laurencia subdisticha'' E.Y.Dawson, Neushul & Wildman, 1960 *'' Laurencia subopposita'' ( J.Agardh) Setchell, 1914 *'' Laurencia subsimplex'' C.K.Tseng, 1943 *'' Laurencia succulenta'' K.W.Nam, 2006 *'' Laurencia tasmanica'' J.D.Hooker &

, 1849 *'' Laurencia tenera'' C.K.Tseng, 1943 *'' Laurencia tenuissima'' ** ''Laurencia tenuissima'' var. ''corymbulosa'' Caldesi *'' Laurencia thrysoidea'' Montagne *'' Laurencia thyrsifera'' J.Agardh, 1876 *'' Laurencia thyrsoides'' (

)

, 1828 *'' Laurencia translucida''

& Cordeiro-Marina, 1996 *'' Laurencia tristicha'' C.K.Tseng, C.F.Chang, E.Z.Xia & B.M.Xia *'' Laurencia tropica''

, 1931 *'' Laurencia tuberculosa'' J.Agardh *'' Laurencia turbinata'' Setchell &

, 1937 *'' Laurencia uncinata'' Zanardini, 1847 *'' Laurencia urceolata'' J.Agardh *'' Laurencia usneoides'' ( C.Agardh) Kützing, 1849 *'' Laurencia uvifera'' ( Forsskål) Børgesen, 1932 *'' Laurencia venusta''

, 1931 *'' Laurencia verruculosa'' Børgesen, 1954 *'' Laurencia versicolor'' (

Vahl Vahl is a surname. Notable people with the surname include: * Christian-Friedrich Vahl (born 1955), German cardiac surgeon * Emanuel Vahl (born 1938), Ukrainian-Israeli composer *Herbert-Ernst Vahl, German SS general *Jens Vahl (1796–1854), Danis ...

) J.V.Lamouroux *'' Laurencia vieillardii'' Kützing, 1865 *'' Laurencia viridis'' Gil-Rodríguez &

Haroun Harun, also transliterated as Haroon or Haroun ( ar, هارون, ) is a common male given name of Arabic origin, related to the Hebrew name of the Prophet Aaron. Both are most likely of Ancient Egyptian origin, from ''aha rw'', meaning "warrior l ...

, 1992 *'' Laurencia voragina'' W.R.Taylor, 1945 *'' Laurencia wrightii'' (

) Kützing

Uses

''Laurencia nidifica'' is used as a condiment in

Hawaii Hawaii ( ; haw, Hawaii or ) is a state in the Western United States, located in the Pacific Ocean about from the U.S. mainland. It is the only U.S. state outside North America, the only state that is an archipelago, and the only stat ...

due to its peppery taste.