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

Order Family Subfamily Tribe Genus Common names #
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 HypericaceaeEdit

The Hypericaceae (St. John's-wort family) is sometimes included in the Clusiaceae.[1]
  1. Clusiaceae Troy Weldy & David Werier (2013) New York Flora Atlas. New York Flora Association, Albany, New York.

Tribe HypericeaeEdit

TriadenumEdit

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
  NYFA-5
USDA-NN
NPT Can
ITIS


LBJ

Images, wsp
 (Spach) Gleason

Fraser's marsh St. Johnswort Native,
Secure
  NYFA-5
USDA-NN
NPT 
ITIS




Images, wsp

HypericumEdit

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. BrathysEdit
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
  NYFA-5
USDA-NN
NPT 
ARS 
Trop.



Images, wsp
(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
  NYFA-5
USDA-NN
NPT Can
ARS ITIS
Trop.



Images, wsp
(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
  NYFA-5
USDA-NN

ARS 
FNA Trop.



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
  NYFA-5
USDA-NN
NPT 
ARS 




Images, wsp
 (L.)
Britton, Sterns & Poggenb.

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

ARS 




Images, wsp
Walter

Coppery St. Johnswort,
Coppery St. John's-wort
Native, C:10,
Endangered,
NYNHP: 1[1]
  NYFA-1
USDA-N0

ARS 




Images, wsp
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?
USDA-NN
NPT 
ITIS
Trop.



Images, wsp
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-XCLD
USDA-N0

ARS ITIS




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

1831. H. 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

OBL

Perennial,
Herb-forb
  NYFA-5
USDA-NN
NPT Can
ARS ITIS
FNA Trop.
NSE BNA


Images, wsp
 L.

1767. H. 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,
NYNHP: 2[1]

FACU

Perennial,
Shrub,
Sun - part shade
  NYFA-2
USDA-NN
NPT Can
ARS 
FNA Trop.
BNA
LBJ
MBG 
Images, wsp
W.P.C.Barton

1818. H. adpressum W.P.C.Barton
1821. H. 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[2]

OBL

Perennial,
Herb-forb
  NYFA-2
USDA-N

ARS 
FNA Trop.



Images, wsp
 Pursh

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

FACW

Perennial,
Shrub
  NYFA-1

ARS 
FNA Trop.



Images, wsp
W.P.Adams & N.Robson

1803. Ascyrum multicaule
Michx. ex Willd.
1936. A. hypericoides var. multicaule
1961. H. 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
  NYFA-1
USDA-N0
NPT 
ARS 
FNA 



Images, wsp
 L.

    
    
    
Kalm's St. John's-wort Native,
Likely extirpated
  NYFA-Z
USDA-NN

ARS 




Images, wsp
 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
  NYFA-X
USDA-N0

ARS ITIS
FNA Trop.
NSE BNA


Images, wsp
Hypericumsect. Myriandra (excluded taxa) St. John's-wort N.Y. Status Images Distribution NY NPT
(L.) Crantz

1753. Ascyrum hypericoides L.
1766. H. hypericoides (L.) Crantz
    
St. Andrew’s cross N. America native,
N.Y. excluded
  NYFA-XCLD
USDA-N0


FNA Trop.



Images, wsp
(L.) Cranz

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


FNA Trop.



Images, wsp
Hypericum sect. RoscynaEdit
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
  NYFA-3
USDA-NN
NPT Can
ARS ITIS
FNA FoC Trop.
BNA


Images, wsp
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
  NYFA-XCLD
USDA-NN
Can
ARS 
FoC Trop.



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
 
USDA-NN

ARS 
FoC Trop.



Images, wsp
Hypericum sect. HypericumEdit
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
  NYFA-5
USDA-NN
NPT 
ARS 




Images, wsp
 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
  NYFA-X
USDA-XX
NPT Can
ARS 
FoC Trop.
NSE BNA
IPN 

Images, wsp
Hypericum sect. OligostemaEdit
 
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
  NYFA-X
USDA-X0

ARS ITIS
Trop.
BNA


Images, wsp

Family PodostemaceaeEdit

The Podostemaceae (riverweed family) …

Subfamily PodostemoideaeEdit

Genus PodostemumEdit

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
  NYFA-2
USDA-NN

ITIS

BNA


Images, wsp

Family ElatinaceaeEdit

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 ElatineEdit

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

Small water-wort Native,
Likely secure
NYFA-4
USDA-NN
NPT 





Images, wsp
 (Pursh) Arn.

American water-wort Native,
Endangered
NYFA-1
USDA-N0
NPT 





Images, wsp
 Schkuhr

Threestamen waterwort,
Three-stamened waterwort
Introduced   NYFA-X
USDA-NN
NPT 





Images, wsp

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

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