Gnaphalium

Gnaphalium is a genus of flowering plants in the sunflower family,[2][4] 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
Starr 030523-0063 Gnaphalium sandwicensium.jpg
Gnaphalium sandwicensium
from Hawai'i
Scientific classification e
Domain: Eukaryota
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Tribe: Gnaphalieae
Genus: Gnaphalium
L. 1753 not Adans. 1763
Type species
Gnaphalium luteoalbum[1][2]
Synonyms[3]
  • Filaginella Opiz
  • Gnaphalium sect. Synchaeta (Kirp.) Kirp.
  • Gnaphalium sect. Omalotheca (Cass.) Endl.
  • Homognaphalium Kirp.
  • Gnaphalium sect. Eugnaphalium DC.
  • Synchaeta Kirp.
  • Dasyranthus Raf. ex Steud.
  • Gnaphalion St.-Lag.
  • Demidium DC.
  • Omalotheca Cass.
  • Dasyanthus Bubani
  • Amphidoxa DC.
  • Omalotheca subg. Gamochaetiopsis Sch.Bip. & F.W. Schulz
  • Gnaphalium sect. Eu-Gnaphalium O.Hoffm.

Cudweeds are important foodplants for American painted lady caterpillars.

SpeciesEdit

Species in this genus include:[3]

 
Gnaphalium spicatum, from Hooker's Flora Antarctica, 1844

Formerly includedEdit

Numerous species have at one time been included in Gnaphalium,[3] 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 metabolitesEdit

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.[5]

ReferencesEdit

  1. ^ lectotype designated by Britton & Brown, Illustrated Flora of North America 3: 453. 1913
  2. ^ a b Tropicos, Gnaphalium L.
  3. ^ a b c Flann, C (ed) 2009+ Global Compositae Checklist search for Gnaphalium
  4. ^ Linnaeus, Carl von. 1753. Species Plantarum 2: 850-857 in Latin
  5. ^ Cicek, S; Untersulzner, C; Schwaiger, S; Zidorn, C (July 2012). "Caffeoyl-D-glucaric acid derivatives in the genus Gnaphalium (Asteraceae: Gnaphalieae)" (Free full text). Records of Natural Products (Gebze-Kocaeli , Türkiye). 6 (3): 311–315. ISSN 1307-6167.

External linksEdit