Flora of New York/Millerieae, Madieae, Eupatorieae

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Coreopsideae … Ambrosieae 		Flora of New York — Millerieae, Madieae, Eupatorieae →
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Tribe Millerieae

Subtribe Milleriinae

Smallanthus

Smallanthus uvedalia
Hairy leafcup (Smallanthus uvedalia) was present in and collected from western New York during the first half of the twentieth century, but has not been confirmed since.
Asterales — Asteraceae — Asteroideae — Millerieae — Milleriinae — Smallanthus
Genus Smallanthus Smallanthus N.Y. Status Images Distribution NY NPT
(L.) Mack. ex Small
1753. Osteospermum uvedalia L.
1763. Polymnia uvedalia (L.) L.
1933. Smallanthus uvedalius
(L.) Mack. ex Small
 Hairy leafcup,
Bear's-foot,
Yellow-flowered leafcup 		Native, CoC: 10,
Endangered,
No recent reports

NYFA: Z
USDA-N0
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Guizotia

Niger-seed (Guizotia abyssinica) is commonly used to feed birds, which may account for its occasional temporary introduction.

Asterales — Asteraceae — Asteroideae — Millerieae — Milleriinae — Guizotia
Genus Guizotia Cass. Guizotia N.Y. Status Images Distribution NY NPT
 (L.f.) Cass.
1782. Polymnia abyssinica L.f.
1829. Guizotia abyssinica (L.f.) Cass.
1836. Guizotia oleifera DC.
 Niger-seed,
Ramtilla 		Introduced from
 Africa,
Impersistent
UPL
Annual,
Herb-forb

NYFA: X
USDA-XW
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Subtribe Galinsoginae

Galinsoga

Galinsoga quadriradiata
shaggy soldier
Asterales — Asteraceae — Asteroideae — Millerieae — Galinsoginae
Genus Galinsoga Ruiz & Pav. Gallant-soldier N.Y. Status Images Distribution NY NPT
 Cav.
    G. aristulata E.P.Bicknell
    G. bicolorata H.St.John & D.White
    G. caracasana (DC.) Sch.Bip.
    G. ciliata (Raf.) S.F.Blake
 Fringed quickweed,
Peruvian daisy,
Shaggysoldier 		Introduced

NYFA: X
USDA-XX
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 Cav.
    Galinsoga semicalva
 Gallant-soldier,
Small-flowered quickweed 		Introduced

NYFA: X
USDA-XX
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Subtribe Melampodiinae

Acanthospermum

Acanthospermum australe
Paraguay starbur
Asterales — Asteraceae — Asteroideae — Millerieae — Melampodiinae
Genus Acanthospermum Schrank Starbur N.Y. Status Images Distribution NY NPT
(Loefl.) Kuntze
1758. Melampodium australe Loefl.
1818. Centrospermum xanthioides Kunth
1820. Acanthospermum brasilum Schrank
1836. A. xanthioides (Kunth) DC.
1891. A. australe (Loefl.) Kuntze
 Southern starburr,
Paraguayan starbur,
Paraguay-starbur,
Paraguay-bur,
Sheepbur,
Spiny-bur 		Introduced from
 South America,
Impersistent,
Not naturalized

NYFA: Xm
USDA-XX
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 DC.
1836. A. hispidum DC.
 auct. A. humile non (Sw.) DC.
 Hispid starburr,
Hispid starbur,
Bristly starbur 		Introduced from
 South America,
Impersistent,
Not naturalized

NYFA: Xm
USDA-XX
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Genus Acanthospermum (excluded taxa) Starbur N.Y. Status Images Distribution NY NPT
 (Sw.) DC.
1788. Melampodium humile Sw.
1832. Centrospermum humile (Sw.) Less.
1836. A. humile (Sw.) DC.
 Low starburr,
Low starbur 		Introduced,
N.Y. excluded,
Misidentified[1]

NYFA-Excluded
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  1. ↑ Specimens from New York City, identified as Acanthospermum humile, were later re-itentified as Acanthospermum hispidum.

Tribe Madieae

Known as the tarweed tribe, Madieae includes plants known as tarweeds from the western United States.

Subtribe Arnicinae

Arnica

Arnica lanceolata ssp. prima
clasping arnica
Asterales — Asteraceae — Asteroideae — Madieae — Arnicinae — Arnica
Genus Arnica Arnica N.Y. Status Images Distribution NY NPT
 Nutt.
ssp. lanceolata
    Arnica mollisvar. petiolaris
 Lance-leaved arnica,
Lanceleaf arnica,
New England arnica,
Hairy arnica
Arnica à aigrettes brunes,
Arnica soyeux 		Native,
Endangered

NYFA: 1
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Subtribe Madiinae

Madia

Asterales — Asteraceae — Asteroideae — Madieae — Madiinae — Madia
Genus Madia Tarweed N.Y. Status Images Distribution NY NPT
 Hook.
 Mountain tarweed Introduced,
Impersistent,
N. America native

NYFA: Xm
USDA-NN
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 Molina
 Chilean tarweed,
Coast tarweed 		Introduced,
Impersistent,
US West native

NYFA: Xm
USDA-NX
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Centromadia

Centromadia pungens ssp. pungens - common spikeweed
Asterales — Asteraceae — Asteroideae — Madieae — Madiinae — Centromadia
Genus Centromadia Spikeweed N.Y. Status Images Distribution NY NPT
(Hook. & Arn.) Greene
ssp. pungens
1841. Hartmannia pungens Hook. & Arn.
1843. Hemizonia pungens in…
1894. Centromadia pungens in…
 Common spikeweed,
Common tarweed,
Pungent false tarplant 		Introduced from
 southwestern USA,
Impersistent,
Not naturalized

NYFA: X
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Tribe Eupatorieae

Subtribe Ageratinae

Ageratum

Ageratum houstonianum
bluemink or flossflower
Asterales — Asteraceae — Asteroideae — Eupatorieae — Ageratinae — Ageratum
Genus Ageratum Whiteweed N.Y. Status Images Distribution NY NPT
 Mill.
    Ageratum houstonianum Mill.
Bluemink
Houston's whiteweed ⓘ
Flossflower
Introduced,
Not naturalized

NYFA: Xm
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Genus Ageratum (excluded taxa) Whiteweed N.Y. Status Images Distribution NY NPT
 L.
    Ageratum conyzoides
Goatweed
Tropical whiteweed
Yerba de Cabrio
Not native,
N.Y. excluded,
 iMapInvasives

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Subtribe Oxylobinae

Ageratina

Ageratina altissima
white snakeroot
Asterales — Asteraceae — Asteroideae — Eupatorieae — Oxylobinae — Ageratina
Genus Ageratina Snakeroot N.Y. Status Images Distribution NY NPT
(L.) R.M.King & H.Rob.
1753. Ageratum altissimum L.
1779. Eupatorium rugosum Houtt.
1970. Ageratina altissima
(L.) R.M.King & H.Rob.
 White snakeroot,
Richweed
Eupatoire rugueuse,
Eupatoire à feuilles molles 		Native,
Secure

NYFA: 5
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 (L.) Spach
 Small white snakeroot,
Small-leaved white snakeroot,
Lesser snakeroot 		Native,
Endangered,
Protected (a)

NYFA: 1
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Subtribe Mikaniinae

Mikania

Mikania scandens
climbing hempweed
Asterales — Asteraceae — Asteroideae — Eupatorieae — Mikaniinae — Mikania
Genus Mikania Hempvine N.Y. Status Images Distribution NY NPT
 (L.) Willd.
 Climbing hempweed Native, CoC: 6,
Likely secure
OBL
Perennial,
Herb-vine

NYFA: 4
USDA-NX
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Subtribe Gyptidinae

Conoclinium

Asterales — Asteraceae — Asteroideae — Eupatorieae — Gyptidinae — Conoclinium
Genus Conoclinium Thoroughwort N.Y. Status Images Distribution NY NPT
 (L.) DC.
1753. Eupatorium coelestinum L.
1836. Conoclinium coelestinum (L.) DC.
1878. Conoclinium dichotomum Chapm.
 Blue mistflower,
Blue boneset 		Introduced,
N. America native

NYFA: X
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Subtribe Liatridinae

Liatris

Asterales — Asteraceae — Asteroideae — Eupatorieae — Liatridinae — Liatris
Genus Liatris Blazing star N.Y. Status Images Distribution NY NPT
 (L.) Willd.
var. spicata
    
    
    
 Button blazing star,
Marsh blazing star,
Dense blazing star,
Dense gayfeather 		N. America native,
Unk. NY nativity
FAC
Perennial,
Herb-forb,
Sun

NYFA: UN
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 (L.) Willd.
var. novae-angliae Lunell
 New England blazing star Native, CoC: 9,
Threatened

NYFA: 2
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 (L.) Willd.
var. nieuwlandii (Lunell) E.G. Voss
 Nieuwland's blazing star Native, CoC: 8,
Endangered

NYFA: 1
USDA-N0
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 Michx.
 Slender blazing-star Native, CoC: 9,
Endangered

NYFA: 1
USDA-NN
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 Michx.
 Rough gayfeather,
Tall blazing star,
Tall gayfeather 		Introduced,
N. America native

NYFA: X
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 Michx.
var. pycnostachya
 Thick-spiked blazing star,
Cattail gayfeather,
Prairie blazing star 		Introduced from
 US midwest,
Midwest native

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Subtribe Eupatoriinae

The Eupatoriinae contains the Joe-Pye weeds and thoroughworts, both of which were formerly placed in the genus Eupatorium. However, in 1970, Robert M. King and Harold E. Robinson recommended moving the Joe-Pye weeds to a new genus Eupatoriadelphus.[1] Subsequent molecular studies supported their recommendation for the taxon split, but it was determined that Eutrochium Raf. (1836) was an earlier validly published genus name for Joe-Pye weeds, so Eric E. Lamont transferred the Joe-pye weeds to Eutrochium in 2004.[2]
  1. ↑ King, R. M., and H. Robinson, 1970b. "Studies in the Eupatorieae (Compositae). XXV. A new genus which they coined Eupatoriadelphus." Phytologia 19: 431–432.
  2. ↑ Eric E. Lamont (2004) "New combinations in Eutrochium (Asteraceae: Eupatorieae), an earlier name than Eupatoriadelphus." SIDA, contributions to botany. 21: 901-902.

Eupatorium

Eupatorium perfoliatum
common boneset
Eupatorium (thoroughwort or boneset) contains the white-flowering plants of the Eupatoriinae, native to the northern hemisphere. Most Eupatorium species found in New York are native to the state, and many are listed a protected species.
Asterales — Asteraceae — Asteroideae — Eupatorieae — Eupatoriinae — Eupatorium
Genus Eupatorium Thoroughwort N.Y. Status Images Distribution NY NPT
 L.
1753. Eupatorium perfoliatum L.
1903. Eupatorium chapmanii Small
 Common boneset,
Thoroughwort,
Boneset thoroughwort,
Thoroughwax
Eupatoire perfoliée 		Native, CoC: 3,
Secure
FACW
Perennial,
Herb-forb

NYFA: 5
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Hyssop-leaved
thoroughwort
Hyssopleaf
thoroughwort
 Native, CoC: 3,
Vulnerable

NYFA: 3-4
USDA-N0
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    Eupatorium rotundifolium
var. saundersii
 Vervain thoroughwort,
Rough boneset 		Native,
Vulnerable

NYFA: 3-4
USDA-N0
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Torrey’s thoroughwort Native,
Threatened

NYFA: 2
USDA-N0
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White thoroughwort Native,
Threatened

NYFA: 2-3
USDA-N
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White-bracted
  thoroughwort,
Justiceweed 		Native,
Endangered

NYFA: 1
USDA-N0
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var. rotundifolium
    Eupatorium verbenifolium
 Round-leaved boneset,
Roundleaf thoroughwort 		Native,
Endangered

NYFA: Z
USDA-N0
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Muhl. ex Willd.
    Eupatorium pubescens[1]
    E. rotundifoliumssp. ovatum
    E. rotundifoliumvar. ovatum
 Hairy boneset,
Hairy thoroughwort,
Roundleaf thoroughwort 		Native,
Endangered

NYFA: 1
USDA-
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Late-flowering
  thorough-wort,
Late boneset 		Native,
Endangered

NYFA: 2
USDA-NX
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Pine barren boneset Native,
Extirpated

NYFA: Z
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 L.
 Upland boneset,
Sessile-leaved boneset 		Native, CoC: 7,
Unranked

NYFA: U
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Tall boneset,
Tall thoroughwort 		N. America native,
Unk. NY nativity

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(Lam.) Small ex Porter & Britton
    Eupatorium capillifolium in…
Dog fennel ⓘ
Dogfennel ⓘ
N. America native,
Unk. NY nativity

NYFA: U
USDA-N0
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1753. Eupatorium cannabinum L.
 Hemp-agrimony
Eupatoire chanvrine,
Eupatoire à
  feuilles de chanvre 		Introduced from
 Eurasia,
 northern Africa,
Impersistent,
Not naturalized

NYFA: X
USDA-XX
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Genus Eupatorium (excluded taxa) Thoroughwort N.Y. Status Images Distribution NY NPT
 L.
    Eupatorium album L.
    Eupatorium glandulosum Michx.
    Eupatorium fernaldii Godfrey
    Eupatorium petaloideum
 White thoroughwort Native,
Endangered

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Note: CA
  1. ↑ The New York Flora Atlas lists E. rotundifolium var. ovatum as E. pubescens. The Flora of North America says "Variety ovatum is an apomictic polyploid that may be a derivative of Eupatorium rotundifolium and E. sessilifolium. Morphologically, it is closer to E. rotundifolium than to E. sessilifolium; the name E. pubescens has priority at species rank."

Eutrochium

Eutrochium maculatum
spotted Joe-Pye weed
Eutrochium (commonly called Joe Pye weed) contains the purple-flowered North American species of the Eupatoriinae. Until 2004, these species were included in the genus Eupatorium and later Eupatoriadelphus.
Asterales — Asteraceae — Asteroideae — Eupatorieae — Eupatoriinae — Eutrochium
Genus Eutrochium Joe-Pye weed N.Y. Status Images Distribution NY NPT
(L.) E.E.Lamont
var. maculatum
1755. Eupatorium maculatum L.
1970. Eupatoriadelphus maculatus in…
2004. Eutrochium maculatum in…
Spotted Joe Pye weed ⓘ
Spotted joe pye weed ⓘ
Spotted Joe-Pye weed ⓘ
Eupatoire maculée ⓘ
Native, CoC: 4,
Secure
OBL
Perennial,
Herb-forb,
Part shade

NYFA: 5
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(L.) E.E.Lamont
var. foliosum
1908. Eupatorium purpureum
var. foliosum Fernald
1920. Eupatorium maculatum
var. foliosum (Fernald) Wiegand
2004. Eutrochium maculatum
var. foliosum (Fernald) E.E. Lamont
Leafy Joe Pye weed ⓘ
Spotted joe pye weed ⓘ
Eupatoire feuillue ⓘ
Native, CoC: 4,
Unranked
OBL
Perennial,
Herb-forb

NYFA: Nu
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(L.) E.E.Lamont
var. purpureum
1753. Eupatorium purpureum L.
1917. Cunigunda purpurea (L.) Lunell
1970. Eupatoriadelphus purpureus in…
2004. Eutrochium purpureum in…
 Purple Joe-Pye weed,
Sweet-scented
  Joe-Pye weed,
Sweetscented
  joe pye weed,
Green-stem joe-pyeweed 		Native, CoC: 7,
Secure
FAC
Perennial,
Herb-forb

NYFA: 5
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(Barratt) E.E.Lamont
1841. Eupatorium purpureum
var. angustifolium Torr. & A.Gray
1849. Eupatorium fistulosum Barratt
1970. Eupatoriadelphus fistulosus in…
2004. Eutrochium fistulosum in…
 Hollow Joe-Pye weed,
Trumpetweed 		Native, CoC: 1,
Secure
FACW
Perennial,
Herb-forb

NYFA: 5
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(Willd. ex Poir.) E.E.Lamont
1812. Eupatorium dubium in…
1970. Eupatoriadelphus dubius in…
2004. Eutrochium dubium in…
 Coastal plain
  Joe-Pye weed,
Joe-Pye thoroughwort 		Native, CoC: 10,
Vulnerable
FACW
Perennial,
Herb-forb

NYFA: 3
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Genus Eutrochium (excluded taxa) Joe-Pye weed N.Y. Status Images Distribution NY NPT
(L.) E.E.Lamont
var. bruneri
    Eupatoriadelphus maculatus
var. bruneri
    Eupatorium bruneri A.Gray
 Spotted Joe-Pye weed N. America native,
N.Y. excluded

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Eutrochium identification
Eutrochium
Joe-Pye
weed 		Floret
color 		Florets
per
head 		Capitu-
lescence
shape 		Stem color
(besides
green) 		Stem
glaucousness
(white bloom) 		Central
stem cavity
(hollow/solid) 		Leaf
taper to
petiole 		Leaf
main
veins 		Max
stem
height
E. purpureum
(purple) 		pale pink,
purplish 		(4-)5 -
8(-10) 		round,
domed 		dark purple
at nodes 		not/scarcely
glaucous 		solid or thin
cavity at base 		gradual
taper 		1 main
vein 		2 m
E. fistulosum
(hollow) 		pink-
purple 		(4-)5 -
8(-10) 		round,
domed 		purple
throughout 		prominently
glaucous 		large cavity
(hollow) 		gradual
taper 		1 main
vein 		3 m
E. maculatum
(spotted) 		purplish (8-)9 -
20(-22) 		flatish
top 		purple spots
or all purple 		rarely glaucous solid or thin
cavity at base 		gradual
taper 		1 main
vein 		2 m
E. dubium
(coastal-plain) 		purple (4-)5 -
8(-10) 		round,
domed 		fine purple
spots/streaks 		abruptly
narrowed 		3 main
veins 		1 m
←
Coreopsideae … Ambrosieae 		Flora of New York — Millerieae, Madieae, Eupatorieae →
Apiales
Table of
contents 		Genus
index 		Protected species index Invasive species index
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