Flora of New York/Hypericaceae, Podostemaceae, Elatinaceae


Oxalidales
Flora of New York — Malpighiales (1)
Hypericaceae, Podostemaceae, Elatinaceae

Malpighiales (2)
Violaceae
Table of
contents
Genus
index
Protected species index Invasive species index


The Malpighiales ... as described in the Angiosperm Phylogeny Website
Clade Clade Order Family Subfamily Tribe Genus Common names #
rosids basal
rosids
Vitales Vitaceae Vitoideae Parthenocisseae Parthenocissus creeper, woodbine, ivy 3
Viteae Vitis grape 8
Ampelopsideae Ampelopsis peppervine 3
basal
fabids
Zygophyllales Zygophyllaceae Tribuloideae Tribulus puncturevine 1
Zygophylloideae Zygophyllum beancaper 1
fabids
COM
clade
Celastrales Parnassiaceae Parnassioideae Parnassia grass of parnassus 1
Celastraceae Celastroideae Celastrus bittersweet, staff vine 2
Euonymus burning bush, spindletree, wahoo 6
Oxalidales Oxalidaceae Oxalis woodsorrel 6
Malpighiales Hypericaceae Hypericeae Triadenum marsh St. John's wort 2
Hypericum St. John's wort 18
Podostemaceae Podostemoideae Podostemum river weed 1
Elatinaceae Elatine water wort 3
Violaceae Violoideae Violeae Hybanthus greenviolet 1
Viola violet 57
Salicaceae Salicoideae Populus cottonwood, aspen, poplar 11
Salix willow 36
Euphorbiaceae Acalyphoideae Acalypheae Acalypha copperleaf, three-seed mercury 4
Mercurialis herb mercury 1
Ricinus castor bean 1
Crotonoideae Crotoneae Croton rushfoil, hogwort 1
Euphorbioideae Euphorbieae Euphorbia spurge, sandmat 21
Linaceae Linoideae Lineae Linum flax 9

Family Hypericaceae edit

The Hypericaceae (St. John's-wort family)

Tribe Hypericeae edit

Triadenum edit

 
Triadenum virginicum
Marsh St. Johnswort (Triadenum) species have also been placed in genus Hypericum, section Triadenioides.
Malpighiales — Hypericaceae — Hypericeae — Triadenum
Genus TriadenumRaf. (1808) Marsh St. Johnswort N.Y. Status Images Distribution NY NPT
 (L.) Raf.

1759. Hypericum virginicum L.
1813. Elodea campanulata Pursh
1837. Triadenum virginicum (L.) Raf.
1838. Elodes virginica (L.) Nutt.
Marsh St. John's wort,
Virginia marsh St. John's wort
Native, CoC: 7,
Secure,
S5, G5

OBL

Perennial,
Herb-forb
 
NYFA: 5
GBIF

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 (Spach) Gleason

1836. Elodes fraseri Spach
1836. Elodea fraseri Spach
1840. Hypericum fraseri (Spach) Steud.
1936. Hypericum virginicum  var. fraseri  (Spach) Fernald
1947. Triadenum fraseri (Spach) Gleason
1979. Triadenum virginicum  ssp. fraseri  (Spach) J.M.Gillett
Fraser's marsh St. Johnswort Native,
Secure
 
NYFA: 5
GBIF

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Hypericum edit

The genus Hypericum is organized here into sections as treated by Robson (2016).[1] The name Hypericum was derived from the Greek hyper (above) and eikon (picture), possibly indicating that the flowers of these plants were hung above pictures or windows.
Hypericum sect. Brathys edit
Robson describes this group as an "informal sect. group." It combines the New York Hypericum species which were previously placed in sections Brathys and Trigynobrathys.
Malpighiales — Hypericaceae — Hypericeae — Hypericum sect. Brathys
Genus Hypericumsect. Brathys St. John's-wort N.Y. Status Images Distribution NY NPT
 L.

1753. Hypericum mutilum L.
Dwarf St. John's-wort Native, CoC: 6,
Secure
 
NYFA: 5

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(Britton) E.P.Bicknell

1891. H. canadense  var. boreale  Britton
1895. H. boreale (Britton) E.P.Bicknell
1895. H. mutilum  var. boreale  E.P.Bicknell provis.
1979. H. mutilum  ssp. boreale  J.M.Gillett
Northern St. Johnswort,
Northern St. John's-wort
Native, CoC: 7,
Secure
 
NYFA: 5

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(A.Gray) Britton

1867. H. canadense  var. majus  A.Gray
1894. H. majus (A.Gray) Britton
1908. H. mutilum  var. longifolium  R. Keller
1951. H. blackstonioides Obern. (i)
1951. Sarothra majorin…
Greater Canadian St. John's-wort,
Larger Canadian St. John's-wort,
Large St. Johnswort
Native, CoC: 6,
Secure
 
NYFA: 5

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 L.

Lesser Canadian St. John's wort,
Lesser Canadian St. Johnswort,
Canadian St. John's-wort,
Lesser St. Johns-wort
Native, CoC: 6,
Secure
 
NYFA: 5

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 (L.)
Britton, Sterns & Poggenb.

Orangegrass,
Orange-grass St. John's-wort,
Pineweed
Native, CoC: 4,
Secure
 
NYFA: 5

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Walter

Coppery St. Johnswort,
Coppery St. John's-wort
Native, CoC: 10,
Endangered,
NYNHP: 1[1]
 
NYFA: 1

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E.P.Bicknell (pro. sp.)

Hypericum boreale ×
Hypericum canadense

1895. Hypericum canadense
var. parvicarpum E.P.Bicknell
1913. H. dissimulatum E.P.Bicknell
Disguised St. John's-wort Native,
Endangered
 
NYFA: 1?

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Genus Hypericumsect. Brathys (excluded taxa) St. John's-wort N.Y. Status Images Distribution NY NPT
Engelm. & A.Gray

Claspingleaf St. John's-wort,
Clasping-leaved
  St. John's-wort
N. America native,
N.Y. excluded
 
NYFA-Excluded

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Hypericum sect. Myriandra edit
 
Hypericum ellipticum
The species of Hypericum sect. Myriandra are shrubs or subshrubs.[1]
Malpighiales — Hypericaceae — Hypericeae — Hypericum sect. Myriandra
Genus Hypericumsect. Myriandrasubsect. Suturosperma St. John's-wort N.Y. Status Images Distribution NY NPT
 Hook.

1831. Hypericum ellipticum Hook.
1836. Brathydium canadense Spach
1840. H. brathydium Steudel
1908. H. canadense  var. oviforme  R Keller
Pale St. Johnswort,
Pale St. John's-wort,
Elliptic St. John's-wort,
Elliptic-leaved
  St. John's-wort
Millepertuis elliptique
Native, CoC: 6,
Secure,
S5, G5

OBL

Perennial,
Herb-forb
 
NYFA: 5
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 W.P.C.Barton

1818. Hypericum adpressum W.P.C.Barton
1821. Hypericum fastigiatum Elliott
1840. H. adpressum  var. fastigiatum  (Elliott) Torr. & A.Gray
1853. Brathydium fastigiatumin…
1853. Myriandra adpressain…
Creeping St. John's-wort Native, CoC: 10,
Threatened,
NYNHP: 2[1]

OBL

Perennial,
Herb-forb
 
NYFA: 2
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Genus Hypericumsect. Myriandrasubsect. Centrosperma St. John's-wort N.Y. Status Images Distribution NY NPT
 L.

1767. Hypericum prolificum L.
1836. Myriandra ledifolia Spach
1836. M. spathulata Spach
1836. M. prolifica (L.) Spach
1840. H. spathulatum (Spach) Steud.
1856. Brathys prolifica (L.) Payer
Shrubby St. Johnswort,
Shrubby St. John's-wort
Millepertuis prolifère
Native, CoC: 3,
Threatened,
S2, G5,
NYNHP: 2[2]

FACU

Perennial,
Shrub,
Sun - part shade
  Allegany, Broome, Cattaraugus, Chenango, Columbia, Nassau, Niagara, Oswego, Saratoga, Seneca, Suffolk, Warren, Westchester
NYFA: 2
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 Pursh

1813. Hypericum densiflorum Pursh
1856. H. prolificum  var. densiflorum  (Pursh) A.Gray
Bushy St. John's-wort Native, CoC: 10,
Endangered,
S1,
NYNHP: 1[3]

FACW

Perennial,
Shrub
  Nassau, Queens, Suffolk
NYFA: 1
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 L.

1753. Hypericum kalmianum L.
1853. Norysca kalmiana (L.) K. Koch
Kalm's St. John's-wort Native, CoC: 10,
Likely extirpated,
SX, G4

FACW
  Niagara (1817-1901)
NYFA: Z
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 Michx.

1791. H. aureum W.Bartram (i)
1803. H. frondosum Michx.
1814. H. amoenum Pursh
1901. H. splendens Small
Golden St. John's-wort,
Cedarglade St. Johnswort
Introduced,
Not naturalized,
Cultivated
  Warren (1945)
NYFA: X
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Genus Hypericumsect. Myriandrasubsect. Ascyrum St. John's-wort N.Y. Status Images Distribution NY NPT
W.P.Adams & N.Robson

1803. Ascyrum multicaule Michx. ex Willd.
1936. A. hypericoides  var. multicaule  (Michx. ex Willd.) Fernald
1961. Hypericum stragulumin…
1980. H. hypericoides  ssp. multicaule  (Michx. ex Willd.) N.Robson
Low St. John's-wort,
St. Andrew's cross,
Multi-stemmed
  St. John's-wort
Native, CoC: 5,
Endangered,
NYNHP: 1[4]

FACU

Perennial,
Shrub, subshrub
  Nassau, Suffolk
NYFA: 1

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(L.) Crantz

1753. Ascyrum hypericoides L.
1766. H. hypericoides (L.) Crantz
    
St. Andrew’s cross N. America native,
N.Y. excluded
  excluded
NYFA-Excluded

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(L.) Cranz

1753. Ascyrum crux-andreae L.
1766. Hypericum crux-andreae (L.) Cranz
St. Peter's-wort N. America native,
N.Y. excluded
  excluded
NYFA-Excluded

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Hypericum sect. Roscyna edit
Section Roscyna contains the great or giant St. John's wort (Hypericum ascyron), which is native to Asia and northeastern North America. The rare native subspecies H. ascyron ssp. pyramidatum is present in New York, while the Asian subspecies do not appear to be present in the wild.
Malpighiales — Hypericaceae — Hypericeae — Hypericum sect. Roscyna
Genus Hypericumsect. Roscyna St. John's-wort N.Y. Status Images Distribution NY NPT
 L.
ssp. pyramidatum (Aiton) N. Robson

1789. H. pyramidatum Aiton
1797. H. amplexicaule Lam. (i)
1802. H. ascyroides Willd.
1803. H. macrocarpum Michx.
1813. H. bartramianum Pursh
1836. Roscyna americana Spach
1951. H. ascyronvar. americanum
2001. H. ascyronssp. pyramidatum
Great St. John's-wort,
American great St. Johnswort,
Giant St. John's-wort
Millepertuis à grandes fleurs,
Millepertuis à grande fleur,
Millepertuis faux-ascyrum,
Millepertuis pyramidal
Native, CoC: 8,
Rare

FAC

Perennial,
Herb-forb
 
NYFA: 3

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Genus Hypericumsect. Roscyna (excluded taxa) St. John's-wort N.Y. Status Images Distribution NY NPT
 L.
ssp. ascyron

1753. Hypericum ascyron L.
1856. Roscyna japonica Blume
Asian great St. Johnswort
Millepertuis ascyron,
Huang hai tang,
Yuan ya zhong
Introduced from
 Asia,
N.Y. excluded
 
NYFA-Excluded

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 L.
ssp. gebleri (Ledeb.) N. Robson

1831. H. gebleri Ledeb.
1831. H. ascyronvar. macrosepalum
1836. Roscyna gebleri (Ledeb.) Spach
1859. H. ascyronvar. brevistylum
2001. H. ascyronssp. gebleri
North-Asian great St. Johnswort,
Siberian great St. Johnswort,
Short-style great St. Johnswort
Duan zhu huang hai tang
Introduced from
 northern Asia,
Impersistent
 
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Hypericum sect. Hypericum edit
 
Hypericum punctatum

Malpighiales — Hypericaceae — Hypericeae — Hypericum sect. Hypericum
Genus Hypericumsect. Hypericum St. John's-wort N.Y. Status Images Distribution NY NPT
 Lam.

    H. subpetiolatum
Spotted St. Johnswort,
Spotted St. John's-wort
Native, CoC: 4,
Secure

FAC

Perennial,
Herb-forb
 
NYFA: 5

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 L.
ssp. perforatum

1753. Hypericum perforatum L.
1763. H. officinarum (L.) Crantz (i)
1778. H. vulgare (L.) Lam. (i)
1789. H. officinale (L.) L.Gaterau (i)
1833. H. marylandicum Biroli ex Colla
1877. H. perforatum  var. confertiflorum  Debeaux
1907. H. perforatum  var. microphyllum  H. Lév.
1941. H. nachitschevanicum Grossh.
Common St. John's-wort,
Perforate St. John's-wort,
Klamathweed,
Goatweed,
Eola-weed,
Tipton's weed,
Rosin-rose
Millepertuis commun,
Millepertuis perforé
Introduced from
 Eurasia,
 northern Africa,
Somewhat invasive,
 NYIS: 47%[1],
IO
 
NYFA: X

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Hypericum sect. Oligostema edit
 
Hypericum humifusum
trailing St. John's-wort

Malpighiales — Hypericaceae — Hypericeae — Hypericum sect. Oligostema
Genus Hypericumsect. Oligostema St. John's-wort N.Y. Status Images Distribution NY NPT
 L.

1753. H. humifusum L.
Trailing St. John's-wort Introduced,
Not naturalized,
Impersistent
 
NYFA: X
NYFA: Queens (1879)
iNat
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Family Podostemaceae edit

The Podostemaceae (riverweed family) …

Subfamily Podostemoideae edit

Podostemum edit

Malpighiales — Podostemaceae — Podostemoideae — Podostemum
Genus Podostemum River weed N.Y. Status Images Distribution NY NPT
Michx.

    Podostemum abrotanoides
Riverweed,
Threadfoot,
Hornleaf riverweed,
River-moss
Native, CoC: 8,
Threatened

OBL

Perennial,
Herb-forb
 
NYFA: 2

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Family Elatinaceae edit

The Elatinaceae is a small family with probably fewer than 50 species and only two genera worldwide. Only one genus (Elatine) has species that are native or naturalized in New York.

Elatine edit

 
Elatine americana
Genus Elatine (waterworts).
Malpighiales — Elatinaceae — Elatine
Genus Elatine Water wort N.Y. Status Images Distribution NY NPT
(Nutt.) Fisch. & C.A.Mey.

Small water-wort Native,
Likely secure
 
NYFA: 4

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 (Pursh) Arn.

American water-wort Native, CoC: 9,
Endangered,
S1, G4

OBL

Annual,
Herb-forb
 
NYFA: 1
NYFA: 9 counties
no observations

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 Schkuhr

Eurasian waterwort
Threestamen waterwort
Three-stamened waterwort
Introduced,
Naturalized,
SNA

OBL

Annual,
Herb-forb
 
NYFA: X
NYFA: 4 counties
GBIF
no observations

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