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• Sisyrinchium mucronatum

Sisyrinchium mucronatum — needle-tipped blue-eyed-grass

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

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)

New England distribution and conservation status

From the dichotomous key of Flora Novae Angliae