Flora of New York/Hypericaceae, Podostemaceae, Elatinaceae

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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 Parthenocissus creeper, woodbine, ivy 3
Vitis grape 8
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 | edit source]

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

Tribe Hypericeae[edit | edit source]

Triadenum[edit | edit source]

Malpighiales — Hypericaceae — Hypericeae — Triadenum
Triadenum Marsh St. Johnswort N.Y. Status Images Distribution NY NPT
 (L.) Raf.

yyyy. Hypericum virginicum L.
yyyy. Triadenum virginicum (L.) Raf.
Marsh St. John's wort,
Virginia marsh St. John's wort
Native,
Secure
Triadenum virginicum (14918080946) 2x3.jpg
Nymap.svg
NYFA-5
USDA-NN
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LBJ

Images, wsp
 (Spach) Gleason

Fraser's marsh St. Johnswort Native,
Secure
Triadenum fraseri (9656876181).jpg
Nymap.svg
NYFA-5
USDA-NN
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ITIS

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Hypericum[edit | edit source]

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 | edit source]
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
Hypericumsect. Brathys St. John's-wort N.Y. Status Images Distribution NY NPT
 L.

1753. Hypericum mutilum L.
Dwarf St. John's-wort Native, C:6,
Secure
Hypericum mutilum NRCS-2.jpg
Nymap.svg
NYFA-5
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(Britton) E.P.Bicknell

1891. H. canadense var. boreale
1895. H. boreale (Britton) E.P.Bicknell
1895. H. mutilum var. boreale
1979. H. mutilum ssp. boreale
Northern St. Johnswort,
Northern St. John's-wort
Native, C:7,
Secure
Hypericum boreale BB-1913.png
Nymap.svg
NYFA-5
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(A.Gray) Britton

1867. H. canadense var. majus
1894. H. majus (A.Gray) Britton
1908. H. mutilum var. longifolium
1951. H. blackstonioides Obern. (i)
1951. Sarothra major
(A. Gray) Y.Kimura
Greater Canadian St. John's-wort,
Larger Canadian St. John's-wort,
Large St. Johnswort
Native, C:6,
Secure
Hypericum majus BB-1913.png
Nymap.svg
NYFA-5
USDA-NN
ARS-GRIN
FNA
Tropicos

Images, wsp
 L.

Lesser Canadian St. John's wort,
Lesser Canadian St. Johnswort,
Canadian St. John's-wort,
Lesser St. Johns-wort
Native, C:6,
Secure
Hypericum canadense NRCS-2.jpg
Nymap.svg
NYFA-5
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 (L.)
Britton, Sterns & Poggenb.

Orangegrass,
Orange-grass St. John's-wort,
Pineweed
Native, C:4,
Secure
Pineweed (Orange grass) (5750568407).jpg
Nymap.svg
NYFA-5
USDA-NN
ARS-GRIN

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Walter

Coppery St. Johnswort,
Coppery St. John's-wort
Native, C:10,
Endangered,
NYNHP: 1[1]
Hypericum denticulatum NRCS-2.jpg
Nymap.svg
NYFA-1
USDA-N0
ARS-GRIN

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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
Hypericum boreale BB-1913.png
Nymap.svg
NYFA-1?
USDA-NN
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Tropicos

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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
Hypericum gymnanthum BB-1913.png
Nymap.svg
NYFA-XCLD
USDA-N0
ARS-GRIN
ITIS

Images, wsp
Hypericum sect. Myriandra[edit | edit source]
Hypericum ellipticum
The species of Hypericum sect. Myriandra are shrubs or subshrubs.[1]
Malpighiales — Hypericaceae — Hypericeae — Hypericum sect. Myriandra
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
Pale St. Johnswort,
Pale St. John's-wort,
Elliptic St. John's-wort,
Elliptic-leaved
  St. John's-wort
Millepertuis elliptique
Native, C:6,
Secure,
S5, G5

OBL

Perennial,
Herb-forb
Hypericum ellipticum iNat-57495193.jpg
Nymap.svg
NYFA-5
USDA-NN
Go Botany
VASCAN
iNaturalist
ARS-GRIN
ITIS
FNA
Tropicos
NatureServe
BONAP

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 W.P.C.Barton

1818. Hypericum adpressum W.P.C.Barton
1821. Hypericum fastigiatum Elliott
1840. H. adpressum var. fastigiatum
1853. Brathydium fastigiatum
(Elliott) K.Koch
1853. Myriandra adpressa
(W.P.C.Barton) K.Koch
Creeping St. John's-wort Native, C:10,
Threatened,
NYNHP: 2[1]

OBL

Perennial,
Herb-forb
Hypericum adpressum iNat-22662922 (2x3).jpg
Nymap.svg
NYFA-2
USDA-N
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ARS-GRIN
FNA
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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, C:3,
Threatened,
S2, G5,
NYNHP: 2[2]

FACU

Perennial,
Shrub,
Sun - part shade
Hypericum prolificum Arkansas.jpg
Nymap.svg
Allegany, Broome, Cattaraugus, Chenango, Columbia, Nassau, Niagara, Oswego, Saratoga, Seneca, Suffolk, Warren, Westchester
NYFA-2
USDA-NN
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VASCAN
iNaturalist
ARS-GRIN
FNA
Tropicos
BONAP
LBJ
MBG 
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 Pursh

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

FACW

Perennial,
Shrub
Hypericum densiflorum BB-1913.png
Nymap.svg
Nassau, Queens, Suffolk
NYFA-1
USDA-N0
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FNA
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 L.

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

FACW
Hypericum kalmianum iNat-102565220.jpg
Nymap.svg
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
Hypericum aureum 139-8498.jpg
Nymap.svg
Warren (1945)
NYFA-X
USDA-N0
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FNA
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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
1961. Hypericum stragulum
W.P.Adams & N.Robson
1980. H. hypericoides ssp. multicaule
Low St. John's-wort,
St. Andrew's cross,
Multi-stemmed
  St. John's-wort
Native, C:5,
Endangered,
NYNHP: 1[4]

FACU

Perennial,
Shrub, subshrub
Hypericum stragulum iNat-112528730.jpg
Nymap.svg
Nassau, Suffolk
NYFA-1
USDA-N0
Go Botany
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FNA

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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
St. Andrews-cross (Hypericum hypericoides) (6757577093).jpg
Excluded nymap.svg
excluded
NYFA-XCLD
USDA-N0
FNA
Tropicos

Images, wsp
(L.) Cranz

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

Images, wsp
Hypericum sect. Roscyna[edit | edit source]
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
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. ascyron var. americanum
2001. H. ascyron ssp. 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, C:8,
Rare

FAC

Perennial,
Herb-forb
Hypericum ascyron 0807.JPG
Nymap.svg
NYFA-3
USDA-NN
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Note: IW
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
Hypericum ascyron.JPG
Nymap.svg
NYFA-XCLD
USDA-NN
VASCAN
ARS-GRIN
FoC
Tropicos

Images, wsp
 L.
ssp. gebleri (Ledeb.) N. Robson

1831. H. gebleri Ledeb.
1831. H. ascyron var. macrosepalum
1836. Roscyna gebleri (Ledeb.) Spach
1859. H. ascyron var. brevistylum
2001. H. ascyron ssp. 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
Hypericum ascyron (bud).JPG
Nymap.svg

USDA-NN
ARS-GRIN
FoC
Tropicos

Images, wsp
Hypericum sect. Hypericum[edit | edit source]
Hypericum punctatum

Malpighiales — Hypericaceae — Hypericeae — Hypericum sect. Hypericum
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, C:4,
Secure

FAC

Perennial,
Herb-forb
Hypericum punctatum flower.jpg
Nymap.svg
NYFA-5
USDA-NN
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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
1907. H. perforatum var. microphyllum
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
Hypericum perforatum WFNY-131A.jpg
Nymap.svg
NYFA-X
USDA-XX
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Hypericum sect. Oligostema[edit | edit source]
Hypericum humifusum
trailing St. John's-wort

Malpighiales — Hypericaceae — Hypericeae — Hypericum sect. Oligostema
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,
Queens County 1879
Hypericum humifusum sl10 (9x16).jpg
Nymap.svg
NYFA-X
USDA-X0
ARS-GRIN
ITIS
Tropicos
BONAP

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Family Podostemaceae[edit | edit source]

The Podostemaceae (riverweed family) …

Subfamily Podostemoideae[edit | edit source]

Genus Podostemum[edit | edit source]

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

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

OBL

Perennial,
Herb-forb
Podostemum ceratophyllum BB-1913.png
Podostemum ceratophyllum NY-dist-map.png
NYFA-2
USDA-NN
ITIS
BONAP

Images, wsp

Family Elatinaceae[edit | edit source]

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.

Genus Elatine[edit | edit source]

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

Small water-wort Native,
Likely secure
Nymap.svg
NYFA-4
USDA-NN
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 (Pursh) Arn.

American water-wort Native,
Endangered
Nymap.svg
NYFA-1
USDA-N0
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 Schkuhr

Threestamen waterwort,
Three-stamened waterwort
Introduced Elatine triandra flower.jpg
Nymap.svg
NYFA-X
USDA-NN
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Images, wsp