A

• Senecio achilleifolius  DC.
• Senecio actinella Greene -- Flagstaff ragwort
• Senecio adenotrichius
  Senecio adenotrichius
  Senecio adenotrichius is a species of the genus Senecio. It is native to Chile, and common on disturbed land there.It is an invasive plant species in the United States....
  
   DC.
• Senecio aegyptius L.
• Senecio alatus Wall. ex DC.
• Senecio albonervius Tacote
• Senecio alboranicus
• Senecio amplectens Gray -- alpine groundsel, showy alpine groundsel, showy alpine ragwort
• Senecio ampullaceus
  Senecio ampullaceus
  Senecio ampullaceus also known as Texas ragwort, Texas squaw-weed, Texas groundsel,and Texas butterweedis a species of Senecio in the family Asteraceae and gets its Latin name ampullaceus from its flask shaped flower-head...
  
   -- Texas ragwort, Texas squaw-weed, Texas groundsel, clasping-leaf groundsel
• Senecio angulatus
  Senecio angulatus
  Senecio angulatus also known as Creeping groundseland sometimes as Cape ivyis a climbing succulent perennial from the family Asteraceae of the genus Senecio; a native of South Africaan alien in Australia,a problem weed in New Zealand,...
  
   L. f. -- Climbing groundsel
• Senecio angustifolius
• Senecio antandroi
  Senecio antandroi
  Senecio antandroi is a species of the genus Senecio endemic to Madagascar....
  
   Scott-Elliot
• Senecio anteuphorbium (L.) Sch. Bip.
• Senecio antitensis Baker
• Senecio antisanae
  Senecio antisanae
  Senecio antisanae is a species of Senecio in the Asteraceae family found only in the subtropical or tropical moist montane region of Ecuador. It is threatened by habitat loss....
  
  
• Senecio aphanactis
  Senecio aphanactis
  Senecio aphanactis is a species of flowering plant in the aster family known by the common names chaparral ragwort, rayless ragwort, and California groundsel. It is native to California as far north as the San Francisco Bay Area and south into Baja California. It occurs in dry coastal areas,...
  
   Greene -- chaparral ragwort
• Senecio arborescens
  Senecio arborescens
  Senecio arborescens should be a species of the genus Senecio in the Asteraceae family, but the available information about it mostly conflicting and old....
  
  
• Senecio arizonicus Greene -- Arizona ragwort
• Senecio aronicoides
  Senecio aronicoides
  Senecio aronicoides is a species of flowering plant in the aster family known by the common name rayless ragwort. It is native to Oregon and northern and central California, where it can be found in the woodlands and forests of mountains and foothills, often in relatively dry habitat...
  
   DC. -- rayless ragwort
• Senecio articulatus  -- candle plant, sausage plant
• Senecio astephanus
  Senecio astephanus
  Senecio astephanus is a species of flowering plant in the aster family known by the common name San Gabriel ragwort. It is endemic to California, where it is known only from the rocky slopes of the Transverse Ranges and adjacent Coast Ranges...
  
   Greene -- San Gabriel ragwort
• Senecio atratus Greene -- tall blacktip ragwort
• Senecio aureus
  Senecio aureus
  Packera aurea , commonly known as Golden Ragwort, is a perennial flower in family Asteraceae. It is also known as Life Root, Squaw Weed, Golden Sececio, ragwort, uncum root, waw weed, uncum, false valerian, cough weed, female regulator, cocash weed, ragweed, staggerwort, and St...
  
  

B

• Senecio bahioides
  Senecio bahioides
  Senecio bahioides is a species of the genus Senecio and family Asteraceae and is a native of Chile....
  
   Hook. & Arn.
• Senecio barbertonicus
  Senecio barbertonicus
  Senecio barbertonicus Klatt. common names of Barberton Groundselor Succulent Bush Seneciois an evergreen succulent shrub of the family Asteraceae and genus Senecio, native to Southern Africa, named after one of its native localities Barberton and is now also being cultivated elsewhere for its...
  
  
• Senecio barorum Humbert
• Senecio battiscombei
• Senecio benedictus
• Senecio bennettii G. Simpson & J. S. Thomson
• Senecio bicolor (Willd.) Todaro -- silver ragwort
• Senecio bigelovii Gray -- nodding ragwort, Bigelow grounsel
• Senecio bipinnatisectus (F. Muell.) Belcher
• Senecio blochmaniae
  Senecio blochmaniae
  Senecio blochmaniae is an uncommon species of flowering plant in the aster family known by the common name dune ragwort. It is endemic to the Central Coast of California, where it is known only from the direct coastline of San Luis Obispo and Santa Barbara Counties. It grows in sand dunes and sandy...
  
   Greene -- dune ragwort
• Senecio brasiliensis
  Senecio brasiliensis
  Senecio brasiliensis or by its common name flor-das-almas, a perennial species of Senecio genus and the family Asteraceae grows as a native in the fields and meadows of central South America.-Description:S...
  
  
• Senecio breweri Burtt Davy -- Brewer's ragwort
• Senecio brunonianus
  Senecio brunonianus
  Senecio brunonianus is a species of the genus Senecio and family Asteraceae....
  
   Hook. & Arn.
• Senecio burchellii DC. -- Molteno Disease Plant
• Senecio bupleuroides DC.

C

• Senecio cacaliaster Lam
• Senecio californicus
  Senecio californicus
  Senecio californicus is a species of flowering plant in the aster family known by the common name California ragwort. It is native to California as far north as the San Francisco Bay Area, and Baja California. It grows in sandy areas in several habitat types, and it is often seen at the coast in...
  
   DC. -- California ragwort
• Senecio cambrensis
  Senecio cambrensis
  Senecio cambrensis is a flowering plant of the family Asteraceae. It is endemic to the United Kingdom and currently known only from North Wales...
  
   -- Welsh groundsel, Welsh ragwort
• Senecio cappa Buch.-Ham. ex D. Don
• Senecio cedrosensis Greene
• Senecio cedrorum
  Senecio cedrorum
  Senecio cedrorum is a shrub species of the genus Senecio and family Asteraceae and endemic to Madagascar....
  
   Raynal
• Senecio cerberoanus
  Senecio cerberoanus
  Senecio cerberoanus is a species of the genus Senecio, family Asteraceae and one of the many species of Senecio native to Chile....
  
   J.Rémy
• Senecio chilensis
  Senecio chilensis
  Senecio chilensis is a species of the genus Senecio, family Asteraceae and one of the many species of Senecio native to Chile....
  
    Less.
• Senecio citriformis -- Blue Seaweed
• Senecio clarkianus
  Senecio clarkianus
  Senecio clarkianus is a species of flowering plant in the aster family known by the common name Clark's ragwort. It is endemic to the Sierra Nevada of California, where it grows in the moist meadows on the western slopes of the range. It is a perennial herb growing up to 1.2 meters tall from a...
  
   Gray -- Clark's ragwort
• Senecio cleavelandii Greene
• Senecio clivorum
  Ligularia dentata
  Ligularia dentata, or summer ragwort and leopard plant, is a species of the genus Ligularia and the family Asteraceae.It is a perennial native to China and Japan.-Description:The plant is a clump-forming perennial...
  
   Maxim. aka Ligularia dentata-- summer ragwort
• Senecio compactus Kirk
• Senecio confusus Elmer
• Senecio congestus
  Senecio congestus
  Senecio congestus, also known by its common names Swamp Ragwort, Northern Swamp Groundsel, Marsh Fleabane, Marsh Fleawort, Clustered Marsh Ragwort and Mastodon Flower, a herbaceous member of the Asteraceae family and the Senecio genus, can be seen most easily when its bright yellow umbel flowers...
  
   (R. Br.) DC. -- Marsh ragwort, Clustered marsh ragwort, Marsh fleabane
• Senecio coquimbensis
  Senecio coquimbensis
  Senecio coquimbensis is a species of the genus Senecio, family Asteraceae and one of the many species of Senecio native to Chile....
  
   Phil. (1858)
• Senecio crassiflorus
  Senecio crassiflorus
  Senecio crassiflorus, one of the native South American Senecio and an herbaceous dune dwelling perennial.-Description:Senecio crassiflorus is not an upright herb, the silvery to white woolly to tall plant tends to "lay down and rest" on the dunes and sandy coastal areas it inhabits.Leaves:...
  
   (Poir.) DC.
• Senecio crassissimus
  Senecio crassissimus
  Senecio crassissimus is a species of the genus Senecio, family Asteraceae and endemic to Madagascar....
  
   Humbert -- vertical leaf
• Senecio crassulus Gray -- meadow groundsel, thickleaf groundsel, thickleaf ragwort
• Senecio cunninghamii DC.
• Senecio cynthiodes Greene

D

• Senecio densiflorus Wall. ex DC.
• Senecio denticulatus (Hook. & Arn.) DC.
• Senecio doria L. -- golden ragwort
• Senecio doronicum

E

• Senecio eboracensis
  Senecio eboracensis
  Senecio eboracensis, the York groundsel or York radiate groundsel, is a self-pollinating hybrid species of ragwortand one of only six new plants to be discovered in either the United Kingdom or North America in the last 100 years....
  
   -- York groundsel
• Senecio elegans
  Senecio elegans
  Senecio elegans is a species of flowering plant in the aster family known by the common names wild cineraria, purple ragwort, and redpurple ragwort. It is native to southern Africa, and it is cultivated as an ornamental plant for its colorful flowers...
  
   L. -- redpurple ragwort, purple groundsel
• Senecio elaeagnifolius Hook. f.
• Senecio elmeri Piper -- Elmer's ragwort
• Senecio eremophilus Richards. -- desert groundsel, desert ragwort
• Senecio ertterae T.M. Barkl. -- Ertter's ragwort
  • Senecio eruciformis

F

• Senecio ficoides
  Senecio ficoides
  Senecio ficoides is a species of the genus Senecio and family Asteraceae....
  
   (L.) Sch.Bip.
• Senecio fistulosus
  Senecio fistulosus
  Senecio fistulosus is a species of the genus Senecio, family Asteraceae and one of the many species of Senecio native to Chile....
  
   Poepp. ex Less.
• Senecio flaccidus
  Senecio flaccidus
  Senecio flaccidus, formerly recorded as Senecio douglasii member of the daisy family and genus Senecio also known as Threadleaf Groundsel Senecio flaccidus, formerly recorded as Senecio douglasii (in honor of the botanist David Douglas) member of the daisy family and genus Senecio also known as...
  
   Less. -- Douglas senecio, threadleaf groundsel, threadleaf ragwort
• Senecio flavus (Decne.) Sch. Bip.
• Senecio fluviatilis Wallr. -- broad-leaved ragwort
• Senecio formosus Kunth
• Senecio franciscanus Greene -- San Francisco Peaks groundsel
• Senecio fremontii
  Senecio fremontii
  Senecio fremontii is a species of the genus Senecio and family Asteraceae. It takes its scientific name from John C. Frémont....
  
   Torr. & Gray -- dwarf mountain ragwort, Fremont's groundsel

G

• Senecio gallicus
  Senecio gallicus
  Senecio gallicus, an annual plant of the Senecio genus and a member of the Asteraceae family is also one of those species who colonizes in isolated habitats where the environmental conditions could qualify as being difficult -- widespread across southern France and the Iberian Peninsula in deserts...
  
   Chaix
• Senecio glabella (Poir.) C. Jeffrey -- Butterweed
• Senecio glabellus -- Cressleaf groundsel
• Senecio glaberrimus DC.
• Senecio glabratus
  Senecio glabratus
  Senecio glabratus is a species of the genus Senecio and family Asteraceae....
  
    Hook. & Arn.
• Senecio glastifolius L. f. -- purple ragwort, waterdissel
• Senecio glaucus
  Senecio glaucus
  Senecio glaucus is an annual member of the Asteraceae and species of the genus Senecio that grows in the desert-Distribution:Found in sandy soils of coastal plains, strands, and steppes.Native...
  
   L.
• Senecio graciliflorus DC.
• Senecio grandifolius Less.
• Senecio greyi Hook. f.
• Senecio grisebachii Baker

H

• Senecio hakeifolius Bertero ex DC.
• Senecio halleri
• Senecio haloragis
  Senecio haloragis
  Senecio haloragis is a species of the genus Senecio and family Asteraceae and a native of Chile....
  
   J.Rémy
• Senecio harveyanus MacOwan
• Senecio haworthii
  Senecio haworthii
  Senecio haworthii also known as Woolly senecio is a perennial dwarf shrub of the Senecio genus that grows in South Africa usually between the altitudes of 900 to 1200 meters....
  
   -- woolly senecio
• Senecio hercynicus
• Senecio herreianus
• Senecio heterotrichus DC.
• Senecio huntii F. Muell.
• Senecio hydrophiloides
  Senecio hydrophiloides
  Senecio hydrophiloides is a species of flowering plant in the aster family known by the common names tall groundsel and sweet marsh ragwort. It is native to western North America from British Columbia and Alberta to northern California to Utah, where it grows in wet meadows and similar habitat...
  
   Rydb. -- tall groundsel, tall groundsel
• Senecio hydrophilus
  Senecio hydrophilus
  Senecio hydrophilus is a species of flowering plant in the aster family known by the common names water ragwort and alkali marsh groundsel. It is native to western North America from British Columbia to California to Colorado, where it grows in swampy places such as marshes. It can grow in standing...
  
   Nutt. -- alkali marsh groundsel, water groundsel, water ragwort

I-J

• Senecio ilicifolius L.
• Senecio implexus C.Jeffrey
• Senecio integerrimus
  Senecio integerrimus
  Senecio integerrimus is a species of flowering plant in the aster family known by the common names lambstongue ragwort and tall western groundsel. It is native to western and central North America, where it grows in grassland, forest, and other habitat...
  
   Nutt. -- lamb-tongue ragwort, lambstongue groundsel, lambstongue ragwort
• Senecio inaequidens
  Senecio inaequidens
  Senecio inaequidens is a species of the genus Senecio and family Asteraceae.-Distribution:It is a native species in the Afrotropic ecozone, specifically in Southern Africa: Lesotho, South Africa, Swaziland....
  
   DC. -- narrow-leaved ragwort
• Senecio integerrimus
  Senecio integerrimus
  Senecio integerrimus is a species of flowering plant in the aster family known by the common names lambstongue ragwort and tall western groundsel. It is native to western and central North America, where it grows in grassland, forest, and other habitat...
  
   Nutt.
• Senecio integrifolius (L.) Clairv.
• Senecio iosensis G. D. Rowley
• Senecio isatideus DC.
• Senecio iscoensis
  Senecio iscoensis
  Senecio iscoensis or Aetheolaena senecioidesis is a species of Senecio in the Asteraceae family that is found only in subtropical and tropical dry shrubland in Ecuador.It is threatened by habitat loss....
  
  
• Senecio invalidus
  Senecio invalidus
  Senecio invalidus is a species of the genus Senecio and family Asteraceae....
  
   C.Jeffrey
• Senecio jacobaea -- common ragwort, stinking willie, tansy ragwort; syn. Jacobaea vulgaris
• Senecio jacobsenii (R.E.Fr.) C.Jeffrey
• Senecio johnstonii

K

• Senecio keniensis
• Senecio keniodendron -- Giant groundsel
• Senecio keniophytum
  Senecio keniophytum
  Atop of Mount Kenya Senecio keniophytum is one of the endemic groundsel found at high altitudes in Kenya, such as the Afro-alpine zone of Mount Kenya, but not one of the giant Dendrosenecio that also live there.-Description:...
  
  
• Senecio kickxii Steud.
• Senecio kilimanjari
• Senecio kleinia
  Senecio kleinia
  Kleinia neriifolia also known as Verode or Berode and previously known as Senecio kleinia is one of flowering plant species of the genus Kleinia and in the daisy family . It is native endemic to the Canary Islands and it used to be in the genus Senecio-Description:One of the succulentSenecio, S...
  
  
• Senecio kleiniiformis
  Senecio kleiniiformis
  Senecio kleiniiformis is a species of the genus Senecio and family Asteraceae and was previously considered to be in the genus Kleinia. This species is thought to be found only in cultivation....
  
   Suess.

L

• Senecio laetus Edgew.
• Senecio lamarckianus
  Senecio lamarckianus
  Senecio lamarckianus, the Bois De Chèvre , is a species of flowering plant in the Asteraceae family and a member of the genus Senecio. It is endemic to the island Mauritius and is threatened by habitat loss.S...
  
  
• Senecio latifolius DC.
• Senecio lautus G. Forst. ex Willd.
• Senecio leucanthemifolius
  Senecio leucanthemifolius
  -Distribution:Native-Distribution:Native-Distribution:Native:Palearctic:::Northern Africa: Algeria, Libya, Morocco, Tunisia::Western Asia: Israel, Jordan, Lebanon, Syria, Turkey - Anatolia...
  
   Poir. -- Coastal Ragwort
• Senecio lemmonii Gray -- Lemmon groundsel, Lemmon's ragwort, Lemmon's butterweed
• Senecio litorosus Fourc.
• Senecio littoralis
  Senecio littoralis
  Senecio littoralis, the Woolly Ragwort, is a species of flowering plant in the Asteraceae family.It is endemic to the Falkland Islands....
  
  
• Senecio lucidus (Sw.) DC.
• Senecio lugens Richards. -- small blacktip ragwort
• Senecio luzoniensis
  Senecio luzoniensis
  Senecio luzoniensis is a species of the genus Senecio and family Asteraceae and endemic to the Philippines....
  
   Merr.
• Senecio lyonii
  Senecio lyonii
  Senecio lyonii is an uncommon species of flowering plant in the aster family known by the common name island senecio. This island endemic is known only from Guadalupe Island off the coast of Baja California and two of the Channel Islands of California, Catalina and San Clemente Islands. It grows in...
  
   Gray -- island senecio

M

• Senecio macroglossus
• Senecio madagascariensis
  Senecio madagascariensis
  Senecio madagascariensis also known as Madagascar ragwort is a species of the genus Senecio and family Asteraceae. Other common names include Madagascar groundsel and fireweed....
  
   Poir. -- fireweed, Madagascar groundsel, Madagascar ragwort
• Senecio magnificus F. Muell.
• Senecio mandraliscae -- Blue Finger
• Senecio maranguensis
  Senecio maranguensis
  Senecio maranguensis a 2 meter woody shrubor 6 meter climbing shrub from the family Asteraceae and species of the genus Senecio...
  
   O.Hoffm.
• Senecio mattirolii
  Senecio mattirolii
  Senecio mattirolii is a perennial herb of the family Asteraceae endemic to altitudes between 3600–4500 meters on the slopes of the mountains of the Ruwenzori Mountains in Uganda and the Democratic Republic of the Congo and an atypical species of the genus Senecio because it has purple...
  
   Chiov.
• Senecio medley-woodii
  Senecio medley-woodii
  Senecio medley-woodii is a species of the genus Senecio and family Asteraceae.Although ingesting it has no medical or health benefits, it is believed that several African slaves brought it with them as good luck charms when they were being transported to the Americas....
  
   Hutch. (1923)
• Senecio megacephalus Nutt. -- rocky ragwort
• Senecio millefolium Torrey and Gray -- Piedmont ragwort
  • Senecio millefolius Torrey and Gray
• Senecio mikanioides -- German ivy, Cape ivy,
• Senecio minimus Poir.
• Senecio mohavensis
  Senecio mohavensis
  Senecio mohavensis is a species of flowering plant in the aster family known by the common name Mojave ragwort. It is native to the deserts of the American southwest around the intersection of California and Nevada with Arizona, its distribution extending across the border into northern Mexico. It...
  
   Gray -- Mohave groundsel, Mojave ragwort
• Senecio monroi Hook. f.
• Senecio moorei R. E. Fr.
• Senecio moresbiensis (Calder & Taylor) G.W. Douglas & G. Ruyle-Douglas -- cleftleaf ragwort
• Senecio multidentatus Schultz-Bip. ex Hemsl. -- Huachuca Mountain ragwort
• Senecio multilobatus  -- axhead butterweed
• Senecio murrayi Bornm.
• Senecio murinus
  Senecio murinus
  Senecio murinus is a plant species of the genus Senecio and family Asteraceae....
  
   Phil.
• Senecio murorum
  Senecio murorum
  Senecio murorum is a species of the genus Senecio and family Asteraceae....
  
   J.Rémy
• Senecio musiniensis Welsh -- Musinea ragwort
• Senecio myriocephalus Sch. Bip. ex A. Rich.

N

• Senecio nebrodensis L
• Senecio nemorensis
• Senecio neomexicanus -- New Mexico groundsel, New Mexico butterweed
• Senecio neowebsteri Blake -- Olympic Mountain ragwort
• Senecio nevadensis
  Senecio nevadensis
  Senecio nevadensis is a species of the genus Senecio and family Asteraceae....
  
   Boiss. & Reut.
• Senecio newcombei Greene -- Newcombe's ragwort
• Senecio nigrescens
  Senecio nigrescens
  Senecio nigrescens is a species of the genus Senecio and family Asteraceae and was first written about in the botanical classic Botany of Beechey's Voyage to the Pacific and Behring's Straits....
  
   Hook. & Arn.

O

• Senecio obovatus Muhl. -- Roundleaf Ragwort, Squaw-weed
• Senecio otites Kunze ex DC.
• Senecio ovatus (P. Gaertn., B. Mey. & Scherb.) Willd. -- wood ragwort
• Senecio oxyriifolius DC.

P

• Senecio palmeri
• Senecio parryi Gray -- mountain ragwort, Parry groundsel
• Senecio patagonicus
• Senecio pattersonensis
  Senecio pattersonensis
  Senecio pattersonensis is an uncommon species of flowering plant in the aster family known by the common names Mono ragwort and Mount Patterson senecio. It is known only from a small stretch of mountain peaks straddling the border between Mono County, California, and Mineral County, Nevada, in the...
  
   Hoover -- Mono groundsel, Patterson's senecio
• Senecio perdicioides Hook. f.
• Senecio pimpinellifolius Kunth
• Senecio planiflorus
  Senecio planiflorus
  Senecio planiflorus is a species of the genus Senecio and family Asteraceae and is endemic to Chile....
  
   Kunze ex Cabrera
• Senecio plattensis (Nutt.) W.A. Weber & A. Löve -- Prairie Ragwort, Prairie Groundsel
• Senecio polygaloides
• Senecio provincialis (L.) Druce
• Senecio pseudoarnica Less. -- seaside ragwort
• Senecio pterophorus DC. -- shoddy ragwort, African daisy, South African daisy, winged groundsel
• Senecio pudicus Greene -- bashful ragwort
• Senecio pulcher
  Senecio pulcher
  Senecio pulcher is an ornamental plant native to the wet valleys & slopes and flooded rockyhabitats in Argentina, Brazil, and Uruguay. Cited in Flora Brasiliensisby Carl Friedrich Philipp von Martius. After Dusty miller , S...
  
  
• Senecio pyrenaicus L.

Q-R

• Senecio quadridentatus Labill.
• Senecio quaerens  -- Gila groundsel
• Senecio radicans (L. f.) Sch. Bip.
• Senecio rapifolius Nutt. -- openwoods ragwort
• Senecio radicans (L. f.) Sch. Bip.
• Senecio retrorsus DC.
• Senecio riddellii Torr. & Gray -- Riddell groundsel, Riddell's ragwort, Sand groundsel
• Senecio rowleyanus
  Senecio rowleyanus
  Senecio rowleyanus, commonly called string-of-pearls or string-of-beads, is a flowering plant in the family Asteraceae. It is native to southwest Africa. S. rowleyanus grows long, trailing stems of spherical leaves. The flowers are pale and brushlike. It is cultivated indoors as an ornamental...
  
   -- String of pearls
• Senecio rupestris Waldst. & Kit. -- rock ragwort

S

• Senecio sacramentanus Woot. & Standl. -- Sacramento ragwort
• Senecio saxifragoides Hook. f.
• Senecio scandens Buch.-Ham. ex D. Don
• Senecio sarracenicus
• Senecio schimperi Sch. Bip. ex A. Rich.
• Senecio schweinitizianus Nuttall
• Senecio schultzii Hochst. ex A. Rich.
• Senecio scitus Hutch. & Burtt Davy
• Senecio scorzonella
  Senecio scorzonella
  Senecio scorzonella, known by the common name Sierra ragwort, is a species of the genus Senecio and family Asteraceae which is native to California and Nevada. It grows in the southernmost Cascade Range, the Sierra Nevada, and the White Mountains....
  
   Greene -- Sierra groundsel, Sierra ragwort
• Senecio serpens
  Senecio serpens
  Senecio serpens is a species of the genus Senecio and dwarf shrub from the family Asteraceae that is indigenous to southern Africa. It needs little water, and is thus one of the many plants suggested for cultivation in Australia....
  
   G.D.Rowley
• Senecio serra
  Senecio serra
  Senecio serra is a species of flowering plant in the aster family known by the common name tall ragwort. It is native to the western United States, where it can be found in several types of habitat, including sagebrush and woodlands. It is a perennial herb producing a single erect stem or a cluster...
  
   Hook. -- butterweed, butterweed groundsel, tall ragwort
• Senecio sheldonensis Porsild -- Mt. Sheldon ragwort
• Senecio silignus De Candolle
• Senecio silvaticus
• Senecio soldanella Gray -- Colorado ragwort
• Senecio spartioides
  Senecio spartioides
  Senecio spartioides is a species of flowering plant in the aster family known by the common name broomlike ragwort. It is native to the western United States as far east as the Dakotas and Texas, and northern Mexico. It can be found in dry, rocky, often disturbed areas in a number of habitat types...
  
   Torr. & Gray -- broom groundsel, broom-like ragwort
• Senecio sphaerocephalus Greene -- ballhead ragwort, marsh groundsel
• Senecio subdentatus Ledeb.
• Senecio squalidus
  Senecio squalidus
  Oxford Ragwort , is a member of the Senecio genus in the daisy family Asteraceae. It is a yellow-flowered herbaceous plant, native to mountainous, rocky or volcanic areas, that has managed to find other homes on man-made and natural piles of rocks, war-ruined neighborhoods and even on stone walls...
  
   L. -- Oxford ragwort
• Senecio sylvatica L. -- Mountain groundsel
• Senecio sylvaticus
  Senecio sylvaticus
  Senecio sylvaticus is a species of flowering plant in the aster family known by the common name woodland ragwort and heath groundsel. It is native to Eurasia, and it can be found in other places, including western and eastern sections of North America, as an introduced species and an occasional...
  
   L. -- Woodland ragwort, Heath groundsel

T

• Senecio tamoides
  Senecio tamoides
  Senecio tamoides or also known as Canary creeper is a climbing member of the genus Senecio of the family Asteraceae.-Description:Scramblingmostly evergreenperennial,...
  
   DC.
• Senecio taraxacoides (Gray) Greene -- dandelion ragwort
• Senecio tenuifolius Burm. f.
• Senecio toxotis
  Senecio toxotis
  Senecio toxotis is a species of the genus Senecio and family Asteraceae....
  
   C.Jeffrey
• Senecio triangularis
  Senecio triangularis
  Senecio triangularis, known as arrowleaf groundsel and arrowleaf butterweed, is a species of the genus Senecio and family Asteraceae.-Distribution:Native:...
  
   Hook. -- arrowleaf groundsel, arrowleaf ragwort
• Senecio tripinnatifidus
  Senecio tripinnatifidus
  Senecio tripinnatifidus is a species of the genus Senecio and family Asteraceae and is a native of Chile....
  
   Reiche
• Senecio transmarinus
  Senecio transmarinus
  Senecio transmarinus is a sometimes straggling member of the flowering plants Asteraceae and species of the genus Senecio a perennial herbthat grows on the higher elevations of the Ruwenzori Mountains in Uganda....
  
   S.Moore

U-V

• Senecio uncinellus DC.
• Senecio vaginatus
  Senecio vaginatus
  Senecio vaginatus, the Smooth Ragwort, is a species of flowering plant in the Asteraceae family.It is endemic to the Falkland Islands.Its natural habitats are temperate shrubland, rocky areas, and rocky shores.It is threatened by habitat loss....
  
  
• Senecio vernalis
  Senecio vernalis
  One of the European species of Senecio Senecio vernalis is an annual that is also known as Eastern groundsel. While it has been long classified as Senecio vernalis, this species has more recently been identified as a subspecies of Senecio leucanthemifolius Poir...
  
   -- Eastern groundsel
• Senecio viravira Hieron.
• Senecio viscosus
  Senecio viscosus
  Senecio viscosus, commonly known as Sticky Groundsel, is a herbaceous annual plant of the genus Senecio....
  
   -- sticky ragwort, sticky groundsel
• Senecio viscosissimus
  Senecio viscosissimus
  Senecio viscosissimus is a species of the genus Senecio and family Asteraceae....
  
   Colla
• Senecio vulgaris -- common groundsel, old-man-in-the-spring

W

• Senecio warnockii Shinners -- Warnock's ragwort
• Senecio webbii (Sch. Bip.) H. Christ
• Senecio wootonii Greene -- Wooton ragwort, Wooton's ragwort, Wooton's butterweed