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Senecioneae

Tribe of flowering plants in the family Asteraceae

Senecioneae is the largest tribe of the Asteraceae, or the sunflower family, comprising over 150 genera and over 3,500 species. Almost one-third of the species in this tribe are placed in the genus Senecio.{{cite journal | 1 | 20544 | Senecioneae | access-date = 2008-04-14

Plants in this tribe are responsible for more livestock poisonings than all other plants combined. Its members usually contain liver and kidney toxic and carcinogenic unsaturated pyrrolizidine alkaloids in Senecio and furanoeremophilanes in Tetradymia.

A number of species are well known in horticulture.

Classification

Since the time of Bentham, the "premier systematic botanist of the nineteenth century",{{cite journal considerable efforts have been made to classify and understand the striking morphological diversity in the Senecioneae. The traditional view of the tribe has been that of one huge genus Senecio plus many other genera which exhibit varying degrees of distinctiveness. Circumscription and delimitation of the tribe have experienced expansions and contractions over the decades as genera and groups of genera have been moved in and out, as was the case for Arnica, Liabum, Munnozia, Schistocarpha, etc. which have since then been excluded. Of the several potential causes for this constant redefinition the greatest is probably that little is known about its intergeneric relationships or a lack of phylogenetic understanding enhanced by the other problems of conflicting clues from morphological characters, the large size of the tribe, the absence of a precise delimitation or circumscription of Senecio and the naturalness of these assemblages combined with the imprecise boundaries of the different species themselves.

Many segregate genera have been recognized in recent studies, often with circumscriptions derived from selected representative species. Whether the recognition of numerous segregate genera provides a better taxonomy than treating the variation patterns as infrageneric taxa is yet unclear. A respectable case can be made for maintaining Senecio as a broad concept, at least until revisionary studies at the species level are carried out and the results subjected to critical analyses. Most genera that have been removed from the Senecioneae in the broadest sense have come to rest within the Liabeae or within a broadly circumscribed Heliantheae (e.g., allies in the Arnicinae, Chaenactidinae, or Madiinae; Haploesthes in the Flaveriinae; and Raillardella and allies in the Madiinae). Additional information may be found in B. G. Baldwin et al. (2002), H. Robinson (1981), B. Nordenstam (1977–1978) and K. Bremer (1994).

Genera

Senecioneae genera recognized by the Global Compositae Database :

Abrotanella Cass. (synonym Trineuron Hook.f.)
Acrisione
Adenostyles
Aequatorium
Aetheolaena
Angeldiazia
Antillanthus
Arbelaezaster
Arnoglossum
Arrhenechthites
Austrosynotis
Bafutia
Barkleyanthus
Bedfordia
Bethencourtia
Blennosperma
Bolandia
Brachionostylum
Brachyglottis
Cabreriella
Cacaliopsis
Cadiscus
Capelio
Caucasalia
Caxamarca
Centropappus
Chaetacalia
Charadranaetes
Chersodoma
Cineraria
Cissampelopsis
Crassocephalum
Cremanthodium
Crocidium
Culcitium
Curio
Dauresia
Delairea
Dendrocacalia
Dendrophorbium
Dendrosenecio
Dicercoclados
Digitacalia
Dolichoglottis
Dolichorrhiza
Dorobaea
Doronicum
Dresslerothamnus
Ekmaniopappus
Elekmania
Emilia
Emiliella
Endocellion
Erechtites
Eriothrix
Euryops
Farfugium
Faujasia
Faujasiopsis
Garcibarrigoa
Graphistylis
Gymnodiscus
Gynoxys
Gynura
Haastia
Haplosticha
Hasteola
Herodotia
Herreranthus
Hertia
Hoehnephytum
Homogyne
Hubertia
Humbertacalia
Ignurbia
Io
Iocenes
Iranecio
Ischnea
Jacmaia
Jacobaea
Jessea
Kleinia
Lachanodes
Lasiocephalus
Lamprocephalus
Leonis
Lepidospartum
Ligularia
Ligulariopsis
Lopholaena
Lordhowea
Luina
Lundinia
Mattfeldia
Mesogramma
Mikaniopsis
Miricacalia
Misbrookea
Mixtecalia
Monticalia
Nelsonianthus
Nemosenecio
Nesampelos
Nordenstamia
Odontocline
Oldfeltia
Oligothrix
Oresbia
Othonna
Packera
Papuacalia
Paracalia
Parafaujasia
Paragynoxys
Parasenecio
Pentacalia
Pericallis
Petasites
Phaneroglossa
Pippenalia
Pittocaulon
Pladaroxylon
Pojarkovia
Psacaliopsis
Psacalium Cass. (synonym Mesoneuris A.Gray)
Psednotrichia
Pseudogynoxys
Rainiera
Robinsonecio
Robinsonia
Roldana
Rugelia
Scapisenecio
Scrobicaria
Senecio L. (synonym Pseudojacobaea (Hook.f.) R.Mathur)
Shafera
Sinacalia
Sinosenecio
Solanecio
Steirodiscus
Stenops
Stilpnogyne
Syneilesis
Synotis
Talamancalia
Telanthophora
Tephroseris
Tetradymia
Traversia
Tussilago
Urostemon
Vickifunkia C.Ren, L.Wang, I.D.Illar. & Q.E.Yang
Villasenoria
Werneria
Xenophyllum
Yermo
Zemisia

References

Pieter B. Pelser, Barbara Gravendeel and Ruud van der Meijden. (2002). "Tackling speciose genera: species composition and phylogenetic position of Senecio sect. Jacobaea (Asteraceae) based onplastid and nrDNA sequences". American Journal of Botany.
(2023). "Senecioneae Cass..".
"Asteraceae Bercht. & J.Presl". [[Royal Botanic Gardens, Kew]].
(2020). "Expansion of ''Lordhowea'', and a new genus for scapose, alpine Australian species of Senecioneae (Asteraceae)". Taxon.

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