| 词条 | Gnaphalium |
| 释义 |
|image = Starr 030523-0063 Gnaphalium sandwicensium.jpg |image_caption = Gnaphalium sandwicensium from Hawai'i |regnum = Plantae |unranked_divisio = Angiosperms |unranked_classis = Eudicots |unranked_ordo = Asterids |ordo = Asterales |familia = Asteraceae |subfamilia = Asteroideae |tribus = Gnaphalieae |name=cudweeds |genus = Gnaphalium |genus_authority = L. 1753 not Adans. 1763 |type_species_authority = L. |type_species= Gnaphalium luteoalbum[1][2] |synonyms_ref=[3] |synonyms=
|}} Gnaphalium is a genus of flowering plants in the sunflower family,[2][3] commonly called cudweeds. They are widespread and common in temperate regions, although some are found on tropical mountains or in the subtropical regions of the world. Cudweeds are important foodplants for American painted lady caterpillars. SpeciesSpecies in this genus include:[4] {{columns-list|colwidth=22em|
}} Formerly includedNumerous species have at one time been included in Gnaphalium,[4] 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, Euchiton, Ewartia, Facelis, Filago, Galeomma, Gamochaeta, Gnomophalium, Helichrysum, Ifloga, Laphangium, Lasiopogon, Leontonyx, Leontopodium, Leucogenes, Logfia, Lucilia, Luciliocline, Metalasia, Micropsis, Neojeffreya, Novenia, Ozothamnus, Pentzia, Petalacte, Phagnalon, Pilosella, Plecostachys, Pseudognaphalium, Pterocaulon, Rhodanthe, Raoulia, Schizogyne, Staehelina, Stuckertiella, Syncarpha, Troglophyton, Vellereophyton, Xerochrysum Secondary metabolitesGnaphalium 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.[5]References1. ^lectotype designated by Britton & Brown, Illustrated Flora of North America 3: 453. 1913 2. ^1 Tropicos, Gnaphalium L. 3. ^[https://www.biodiversitylibrary.org/page/358871#page/292/mode/1up Linnaeus, Carl von. 1753. Species Plantarum 2: 850-857] in Latin 4. ^1 2 [https://archive.is/20141106174748/http://dixon.iplantcollaborative.org/CompositaeWeb/Default.aspx?Page=AdvNameSearch Flann, C (ed) 2009+ Global Compositae Checklist search for Gnaphalium ] 5. ^{{cite journal |date=July 2012 |author1=Cicek, S |author2=Untersulzner, C |author3=Schwaiger, S |author4=Zidorn, C | title = Caffeoyl-D-glucaric acid derivatives in the genus Gnaphalium (Asteraceae: Gnaphalieae) | volume = 6 | issue = 3 | pages = 311–315 | issn = 1307-6167 | journal = Records of Natural Products (Gebze-Kocaeli , Türkiye) | url = http://www.acgpubs.org/RNP/2012/Volume%206/Issue%201/44-RNP-1102-492.pdf | format = Free full text }} External links{{Commons category}}{{Wikispecies}}
2 : Gnaphalium|Asteraceae genera |
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