Platanthera clavellata (Michx.) Luer

little club-spur bog-orchid

Copyright: various copyright holders. To reuse an image, please click it to see who you will need to contact.

New England Distribution

Adapted from BONAP data

Found this plant? Take a photo and post a sighting.

North America Distribution

Adapted from BONAP data

enlarge

Facts About

Little club-spur bog-orchid is self-pollinating, with the pollen germinating within the pollinia and the pollen tube growing down onto the stigma. In spite of this, the plant is evidently still visited by insects, and cross-pollination may occur.

Habitat

Anthropogenic (man-made or disturbed habitats), bogs, fens, meadows and fields, shores of rivers or lakes, swamps, wetland margins (edges of wetlands)

Characteristics

Habitat
  • terrestrial
  • wetlands
New England state
  • Connecticut
  • Maine
  • Massachusetts
  • New Hampshire
  • Rhode Island
  • Vermont
Leaf arrangement
alternate: there is one leaf per node along the stem
Number of leaves on stem
  • one
  • two
Form of lower petal
the labellum does not have a pouch-like shape
Lower petal outline
the labellum is simple in form
Main color of lower petal
  • green to brown
  • white
  • yellow
Nectar spur
the flower has at least one nectar spur on it
Inflorescence type
the inflorescence is a spike (a long unbranched stem with flowers along it that lack stalks)
Lower petal characteristics
  • the labellum has spurs on it
  • the labellum is simple in form
Lower petal length
3–7 mm
Sepal length
4–5 mm
Show All Characteristics
  • Flowers
    Flower petal color
    • green
    • white
    • yellow
    Flower symmetry
    there is only one way to evenly divide the flower (the flower is bilaterally symmetrical)
    Flowering date
    • August
    • July
    • June
    Flowers per inflorescence
    1–26
    Form of lower petal
    the labellum does not have a pouch-like shape
    Hairs on inflorescence axis
    the main stem of the inflorescence is hairless
    Inflorescence length
    20–60 mm
    Inflorescence type
    the inflorescence is a spike (a long unbranched stem with flowers along it that lack stalks)
    Labellum position
    the labellum is in the lower position on the flower
    Length of flower stalk
    0 mm
    Length of narrowed base of lower petal
    0 mm
    Lobes at base of lower petal
    0 mm
    Lower petal characteristics
    • the labellum has spurs on it
    • the labellum is simple in form
    Lower petal length
    3–7 mm
    Lower petal outline
    the labellum is simple in form
    Lower petal strongly red-veined
    no
    Main color of lower petal
    • green to brown
    • white
    • yellow
    Nectar spur
    the flower has at least one nectar spur on it
    Nectar spur length
    7–13 mm
    Number of stamens
    1
    Orientation of side petals
    the lateral petals are angled steeply upwards
    Pollen sacs
    the pollinia eventually fragment into smaller parts
    Self-pollinating flowers
    there are no cleistogamous flowers on this plant
    Sepal length
    4–5 mm
    Sepals fused only to sepals
    the sepals are separate from one another
    Shape of viscidium
    • the viscidium is lance-shaped (wider near one end, pointed at the ends)
    • the viscidium is long and narrow
    Spots on lower petal
    no
    Spur opening membrane
    there is no membrane over the spur opening
  • Fruits or seeds
    Seed capsule orientation
    the capsule points upwards or is angled outwards
  • Growth form
    Plant green or not
    the plant is chlorophyllous (it has green parts)
    Roots
    the rhizomes do not resemble coral
    Underground organs
    • the plant has one or more swollen storage organs underground, such as bulbs, tubers or corms
    • there are only slender roots on the plant
  • Leaves
    Bract relative length
    the bract is shorter than the associated flower
    Features of leaves
    the leaf does not have any of the mentioned special features
    Leaf arrangement
    alternate: there is one leaf per node along the stem
    Leaf blade edges
    the edges of the leaf blade have no teeth
    Leaf blade length
    30–190 mm
    Leaf blade length to width ratio
    3.8–5.4
    Leaf blade shape
    • the leaf blade is elliptic (widest near the middle and tapering at both ends)
    • the leaf blade is linear (very narrow with more or less parallel sides)
    • the leaf blade is oblanceolate (lance-shaped, but with the widest point above the middle of the leaf blade)
    • the leaf blade is oblong (rectangular but with rounded ends)
    Leaf blade tip
    • the tip of the leaf blade is acute (sharply pointed)
    • the tip of the leaf blade is obtuse (bluntly pointed)
    Leaf blade width
    8–35 mm
    Leaves during flowering
    there are leaves on the plant when it is flowering
    Number of leaves on stem
    • one
    • two
  • Place
    Habitat
    • terrestrial
    • wetlands
    New England state
    • Connecticut
    • Maine
    • Massachusetts
    • New Hampshire
    • Rhode Island
    • Vermont
    Specific habitat
    • bogs
    • edges of wetlands
    • fens
    • man-made or disturbed habitats
    • meadows or fields
    • shores of rivers or lakes
    • swamps

Wetland Status

Usually occurs in wetlands, but occasionally in non-wetlands. (Wetland indicator code: FACW)

New England Distribution and Conservation Status

Distribution

Connecticut
present
Maine
present
Massachusetts
present
New Hampshire
present
Rhode Island
present
Vermont
present

Conservation Status

Exact status definitions can vary from state to state. For details, please check with your state.

Massachusetts
unranked (S-rank: SNR)
Rhode Island
rare (S-rank: S2), concern (code: C)

Native to North America?

Yes

Sometimes Confused With

Platanthera obtusata:
leaves all basal and spur mostly 3-8mm long (vs. P. clavellata, with leaves borne on a stem and spur 7-13 mm long).

Synonyms

  • Gymnadeniopsis clavellata (Michx.) Rydb.
  • Habenaria clavellata (Michx.) Spreng.

Family

Orchidaceae

Genus

Platanthera

Need Help?

Get Help

Information from Dichotomous Key of Flora Novae Angliae

4.  Platanthera clavellata (Michx.) Luer N

little club-spur bog-orchid. Gymnadeniopsis clavellata (Michx.) Rydb.; Habenaria clavellata (Michx.) Spreng. • CT, MA, ME, NH, RI, VT. Fens, meadows, sandy or peaty lake shores, ditches, openings in swamps.