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Sisyrinchium mucronatum — needle-tipped blue-eyed-grass

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Facts

Needle-tipped blue-eyed-grass has a somewhat unusual distribution, on the East Coast and through New England and west across Ontario to central Canada and North Dakota. In New England it is rare in most states, inhabiting fields, meadows, shorelines and forest edges. It has narrow stems with faint wing margins, and sessile, usually solitary inflorescences at the stem apex.

Habitat

Forest edges, meadows and fields, shores of rivers or lakes

New England distribution

Adapted from BONAP data

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North America distribution

Adapted from BONAP data

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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
  • basal: the leaves are growing only at the base of the plant
Leaf blade shape
the leaf blade is linear (very narrow with more or less parallel sides)
Flower petal color
  • blue to purple
  • white
Flower petal length
9–12.5 mm
Petal fusion
the perianth parts are separate
Inflorescence type
the inflorescence has only one flower on it
Ovary position
the ovary is below the point of petal and/or sepal attachment
Fruit type (specific)
the fruit is a capsule (splits along two or more seams, apical teeth or pores when dry, to release two or more seeds)
Fruit length
3.2–5.5 mm
Show all characteristics

  • Clonal plantlets

    Axillary bulblets
    there are no bulblets being produced in axils

  • Flowers

    Anther attachment
    the anther is attached by its base to the filament
    Bulblets replace flowers
    there are no bulblets where the flowers are located
    Carpels fused
    the carpels are fused (the number of carpels equals the number of locules)
    Flower number
    1
    Flower petal color
    • blue to purple
    • white
    Flower petal length
    9–12.5 mm
    Flower symmetry
    there are two or more ways to evenly divide the flower (the flower is radially symmetrical)
    Form of style
    the style is branched above the base
    Fringed petal edges
    the petals are not fringed
    Hairs on flower stalk
    the flower stalk has no hairs on it
    Inflorescence type
    the inflorescence has only one flower on it
    Length of flower stalk
    0 mm
    Length of peduncle
    0 mm
    Marks on petals
    there are no noticeable marks on the petals
    Nectar spur
    the flower has no nectar spurs
    Number of pistils
    1
    Number of styles
    1–3
    Ovary position
    the ovary is below the point of petal and/or sepal attachment
    Petal appearance
    the petals are thin and delicate, and pigmented (colored other than green or brown)
    Petal fusion
    the perianth parts are separate
    Sepal appearance
    the sepals resemble petals in color and texture
    Sepals fused only to sepals
    the sepals are separate from one another
    Spathe
    • the plant does not have a spathe
    • the plant has a spathe surrounding the flower spike
    Spathe form
    NA
    Stamen number
    3
    Stamen position relative to petals
    NA
    Stamens fused
    the stamens are fused to one another at or near their bases
    Stamens fused outwards
    the stamens are not fused to the petals or tepals
    Style petal-like
    the style is not broad and flattened like a petal
    Tepals
    the petals and sepals are similar in size and color

  • Fruits or seeds

    Berry color
    NA
    Fruit compartments
    there are three locules in the fruit
    Fruit length
    3.2–5.5 mm
    Fruit type (general)
    the fruit is dry and splits open when ripe
    Fruit type (specific)
    the fruit is a capsule (splits along two or more seams, apical teeth or pores when dry, to release two or more seeds)
    Other markings on berry
    NA

  • Glands or sap

    Sap
    the sap is clear and watery

  • Growth form

    Lifespan
    the plant lives more than two years
    Underground organs
    • the plant has a rhizome (a horizontal underground stem with roots growing from it)
    • there are only slender roots on the plant

  • Leaves

    Leaf arrangement
    • alternate: there is one leaf per node along the stem
    • basal: the leaves are growing only at the base of the plant
    Leaf blade basal lobes
    the leaf blades do not have basal lobes
    Leaf blade base
    • the leaf blade clasps the stem at the base, or the leaf blade goes all the way around the stem, so that the stem appears to pierce the leaf blade
    • the leaf has no stalk
    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 cross-section
    the leaf blade is more or less flat in cross-section
    Leaf blade faces
    the surfaces of the leaf blade are composed of tissues from the abaxial side only
    Leaf blade form
    Fully-formed (i.e., expanded), +/- green leaf blades are found somewhere on the plant
    Leaf blade orientation
    the edge of the leaf blade faces the stem of the plant
    Leaf blade shape
    the leaf blade is linear (very narrow with more or less parallel sides)
    Leaf blade surface colors
    the upper side of the leaf blade is relatively uniform in color
    Leaf blade veins
    the lateral veins are parallel or slightly arched in the direction of the tip
    Leaf type
    the leaves are simple (i.e., lobed or unlobed but not separated into leaflets
    Stipule twining
    NA
    Stipules
    there are no stipules on this plant

  • Place

    Habitat
    • terrestrial
    • wetlands
    New England state
    • Connecticut
    • Maine
    • Massachusetts
    • New Hampshire
    • Rhode Island
    • Vermont
    Specific habitat
    • edges of forests
    • meadows or fields
    • shores of rivers or lakes

  • Scent

    Plant odor
    the leaves have no particular smell

  • Stem, shoot, branch

    Flowering stem growth form
    the flowering stem is held upright
    Flowering stem leaves
    there is at least one fully-formed leaf on the flowering stem
    Stem hairs
    the stem is nearly or completely hairless

Wetland status

Occurs in wetlands or non-wetlands. (Wetland indicator code: FAC)

In New England

Distribution

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

Conservation status

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

Connecticut
unrankable (S-rank: SU)
Maine
uncommon (S-rank: S3)
Massachusetts
extremely rare (S-rank: S1), endangered (code: E)
New Hampshire
historical (S-rank: SH), endangered (code: E)
Vermont
historical (S-rank: SH)

From Flora Novae Angliae dichotomous key

6.  Sisyrinchium mucronatum Michx. N

needle-tipped blue-eyed-grass. Sisyrinchium intermedium Bickn. • CT, MA, ME, NH, RI, VT. 
Fields, meadows, open shorelines, forest edges.

Native to North America?

Yes

Sometimes confused with

Sisyrinchium montanum:
stems mostly 2-3.7 mm wide and with a conspicuous wing-margin (vs. S. mucronatum, with stems mostly 0.9-1.5 mm wide and with a narrow wing margin).

Synonyms

  • Sisyrinchium intermedium Bickn.

Family

Iridaceae

Genus

Sisyrinchium