Gnaphalium Viscosum
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''Gnaphalium'' is a genus of flowering plants in the family Asteraceae, commonly called cudweeds or (formerly) chafeweeds. They are widespread and common in temperate regions, although some are found on tropical mountains or in the subtropical regions of the world.


Species

, Plants of the World Online accepted the following species: *''Gnaphalium austroafricanum'' Hilliard *''Gnaphalium capense'' Hilliard *''Gnaphalium chiliastrum'' (Mattf.) P.Royen *''Gnaphalium chimborazense'' Hieron. *''Gnaphalium clemensiae'' Mattf. *''Gnaphalium confine'' Harv. *''Gnaphalium declinatum'' L.f. *''Gnaphalium demidium'' (O.Hoffm.) Hilliard & B.L.Burtt *''Gnaphalium diamantinense'' Paul G.Wilson *''Gnaphalium diminutivum'' Phil. *''Gnaphalium englerianum'' (O.Hoffm.) Hilliard & B.L.Burtt *''Gnaphalium exilifolium'' A.Nelson *''Gnaphalium filagopsis'' Hilliard & B.L.Burtt *''Gnaphalium flavocephalum'' G.L.Nesom *''Gnaphalium genevoisi'' Emb. *''Gnaphalium gnaphalodes'' (DC.) Hilliard & B.L.Burtt *''Gnaphalium griquense'' Hilliard & B.L.Burtt *''Gnaphalium heleios'' P.Royen *''Gnaphalium indutum'' Hook.f. *''Gnaphalium limicola'' Hilliard *''Gnaphalium lycopodium'' Pers. *''Gnaphalium maclovianum'' Gand. *''Gnaphalium magellanicum'' Sch.Bip. *''Gnaphalium nelsonii'' Burtt Davy *''Gnaphalium palustre'' Nutt. *''Gnaphalium pauciflorum'' DC. *''Gnaphalium peguense'' R.Kr.Singh *''Gnaphalium phaeolepis'' Phil. *''Gnaphalium pilulare'' Wahlenb. *''Gnaphalium polycaulon'' Pers. *''Gnaphalium pseudohelichrysum'' Reiche *''Gnaphalium puberulum'' DC. *''Gnaphalium rossicum'' Kirp. *''Gnaphalium rosulatum'' S.Moore *''Gnaphalium sepositum'' Benoist *''Gnaphalium simii'' (Bolus) Hilliard & B.L.Burtt *''Gnaphalium stewartii'' C.B.Clarke ex Hook.f. *''Gnaphalium uliginosum'' L. *''Gnaphalium unionis'' Sch.Bip. ex Hochst.


Some former species

*''Gnaphalium dysodes'' → ''Pseudognaphalium dysodes'' *''Gnaphalium ecuadorense'' → ''Pseudognaphalium cheiranthifolium'' *''Gnaphalium norvegicum'' → ''Omalotheca norvegica'' *''Gnaphalium sylvaticum'' → ''Omalotheca sylvatica''


Formerly included

Numerous species have at one time been included in ''Gnaphalium'', but are now considered to belong to other genera: ''Achyrocline, Aliella, Ammobium, Anaphalioides, Anaphalis, Anaxeton, Antennaria, Argyrotegium, Belloa, Berroa, Blumea, Castroviejoa, Chevreulia, Chionolaena, Chrysocephalum, Dolichothrix, Edmondia (plant), Edmondia, Euchiton, Ewartia (plant), Ewartia, Facelis, Filago (plant), Filago, Galeomma, Gamochaeta, Gnomophalium, Helichrysum, Ifloga, Laphangium, Lasiopogon (plant), Lasiopogon, Leontonyx, Leontopodium, Leucogenes, Logfia, Lucilia (plant), Lucilia, Luciliocline, Metalasia, Micropsis, Neojeffreya, Novenia, Ozothamnus, Pentzia, Petalacte, Phagnalon, Pilosella, Plecostachys, Pseudognaphalium, Pterocaulon, Rhodanthe, Raoulia, Schizogyne, Staehelina, Stuckertiella, Syncarpha, Troglophyton, Vellereophyton, Xerochrysum''


Secondary metabolites

''Gnaphalium'' species are known to contain flavonoids and diterpenes. Recently, two unique caffeoyl-D-glucaric acid derivatives, leontopodic acid and leontopodic acid B formerly only known from ''Leontopodium alpinum'' (L.) Cass. were detected in various species of ''Gnaphalium'' together with similar formerly unknown compounds.


References


External links

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Jepson Manual Treatment
{{Taxonbar, from=Q41552 Gnaphalium, Asteraceae genera