Heterosperma pinnatum Cav.

wingpetal

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New England Distribution

Adapted from BONAP data

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North America Distribution

Adapted from BONAP data

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Facts About

Wingpetal is native to the southwestern United States and New England occurrences are probably ephemeral. It is an inconspicuous slender annual, usually with three small oval yellow ray flowers on the flower head.

Habitat

Anthropogenic (man-made or disturbed habitats)

Characteristics

Habitat
terrestrial
New England state
Massachusetts
Leaf type
leaves are simple (i.e., lobed or unlobed but not separated into leaflets)
Leaf arrangement
opposite: there are two leaves per node along the stem
Leaf blade edges
  • the edge of the leaf blade has lobes, or it has both teeth and lobes
  • the edge of the leaf blade has no teeth or lobes
Flower type in flower heads
the flower head has tubular disk flowers in the center and ray flowers, these often strap-shaped, around the periphery
Ray flower color
  • orange
  • yellow
Tuft or plume on fruit
  • NA
  • there is no plume, or the plume is made up of scales, awns, a crown, or a rim
Spines on plant
the plant has no spines
Leaf blade length
10–40 mm
Disk flower number
  • 1-5
  • 6-10
Show All Characteristics
  • Flowers
    Bract cycle number
    there are two main cycles of bracts
    Bract margins
    there are fine hairs along the bract margins
    Bract outer side hair type
    the bracts are hairy, with simple hairs on their outer surface
    Bract outer side hairs
    the bracts are hairy on their outer surfaces
    Bract shape
    • the main bracts are oblong (roughly rectangular but rounded at the ends)
    • the main bracts are ovate (egg-shaped)
    Bract spines
    the bracts have no spines
    Bract texture
    the bracts appear thin, flexible and nearly translucent
    Bracts
    there are at least two distinct forms of bracts in different cycles
    Disk flower color
    yellow
    Disk flower lobe number
    5
    Disk flower number
    • 1-5
    • 6-10
    Disk flower reproductive parts
    the disk flower has both pollen- and seed-producing parts
    Disk flower shape
    the disk flower is tube-shaped (cylindrical), or gradually widening like a funnel
    Flower head number
    • each flowering stem has four or more flower heads on it
    • each flowering stem has only one to three flower heads on it
    Flower head outer flowers
    at the outer edge of the flower head, each flower has a single enlarged lobe or strap
    Flower head platform
    the base has papery scales on it
    Flower head profile
    • NA
    • the disk is flat or nearly flat across the top
    Flower head shape
    the sides of the flower head are roughly parallel, like a cylinder
    Flower type in flower heads
    the flower head has tubular disk flowers in the center and ray flowers, these often strap-shaped, around the periphery
    Inflorescence branching (Solidago)
    NA
    Inflorescence shape
    the inflorescence is flat-topped in profile
    Number of bracts at flower head base
    3–5
    Ovary beak
    there is a beak on the ovary
    Ovary cross-section
    the ovary is compressed (flattened)
    Ovary hair type
    the ovary has no hairs on it
    Ovary hairs
    the ovary has no hairs on it
    Ovary profile
    • in profile, the ovary is roughly egg-shaped, but widest above the middle
    • in profile, the ovary is roughly elliptical (widest in the middle, tapering to both ends)
    Ovary surface
    the ovary surface is textured with tiny points, bumps or wrinkles
    Ray flower color
    • orange
    • yellow
    Ray flower reproductive parts
    the ray flowers have carpels or stamens, but not both
    Ray flowers
    1-5
    Ray length
    1–2 mm
    Reproductive system
    some of the flowers on the plant have only carpels or stamens, while others have both carpels and stamens
    Smaller bracts at base of bracts
    there is no smaller, outer cycle of bracts
    Style branch number
    the style has two branches
    Width of flower head base
    2–5 mm
  • Fruits or seeds
    Number of pappus parts
    • 0
    • 3
    Ovary length in developed fruit
    5–18 mm
    Seed hair tuft details
    • NA
    • the pappus hairs are hooked or barbed
    Seed hair tuft length
    0.5–3 mm
    Seed hair tuft tips
    • NA
    • the pappus hairs are slender
    Seed hairs uniform
    • NA
    • all the pappus hairs are approximately the same length
    Seed tuft type
    • the pappus is made of stiff, tapering bristles
    • there is no pappus on the ovary
    Top of disk flower ovary
    NA
    Tuft or plume on fruit
    • NA
    • there is no plume, or the plume is made up of scales, awns, a crown, or a rim
  • Glands or sap
    Leaf blade glands
    the leaf blades have no glandular (translucent) dots or scales
  • Growth form
    Growth form
    the plant has one or more free-standing stems
    Plant lifespan
    the plant is annual, it lacks evidence of previous years' growth
    Spines on plant
    the plant has no spines
    Underground organs
    there is a thickened taproot on the plant
  • Leaves
    Hairs on underside of leaf blade
    • the underside of the leaf is fuzzy or hairy
    • the underside of the leaf is not hairy, or has very few hairs
    Hairs on upper side of leaf blade
    • the upper side of the leaf is fuzzy or hairy
    • the upper side of the leaf is not hairy, or has very few hairs
    Leaf arrangement
    opposite: there are two leaves per node along the stem
    Leaf blade base
    • the leaf has a distinct petiole
    • the leaf has no petiole
    Leaf blade base shape
    the base of the leaf blade is cuneate (wedge-shaped, tapers to the base with relatively straight, converging edges), or narrow
    Leaf blade edges
    • the edge of the leaf blade has lobes, or it has both teeth and lobes
    • the edge of the leaf blade has no teeth or lobes
    Leaf blade hairs
    the leaf blade has simple hairs with no glands, and not tangled or wooly
    Leaf blade length
    10–40 mm
    Leaf blade shape
    the leaf blade is triangular, with the stalk or attachment point on one of the sides
    Leaf blade surface colors
    there is no noticeable color variation on the upper surface of the leaf
    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 veins
    the leaf blade has one main vein running from the base towards the tip
    Leaf disposition
    the leaves are nearly similar in size, prominence of teeth, and length of stalks throughout the stem
    Leaf spines
    there are no spines on the leaf edges
    Leaf type
    leaves are simple (i.e., lobed or unlobed but not separated into leaflets)
    Specific leaf type
    the leaf has a row of two or more lobes on each side of the central axis
  • Place
    Habitat
    terrestrial
    New England state
    Massachusetts
    Specific habitat
    man-made or disturbed habitats
  • Stem, shoot, branch
    Flowering stem cross-section
    the flowering stem is circular, or with lots of small angles
    Leaves on stem
    there is at least one full leaf above the base of the flowering stem
    Stem internode hair direction
    NA
    Stem internode hair type
    the stem has no hairs between the nodes
    Stem internode hairs
    the stem has no hairs between the nodes

Wetland Status

Not classified

New England Distribution and Conservation Status

Distribution

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

Conservation Status

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

Massachusetts
not applicable (S-rank: SNA)

Native to North America?

Yes and no (some introduced)

Family

Asteraceae

Genus

Heterosperma

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Information from Dichotomous Key of Flora Novae Angliae

1.  Heterosperma pinnatum Cav. E

wingpetal. MA. Gardens, wool waste.