Luzula luzuloides (Lam.) Dandy & Wilmott

oak-forest wood rush

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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

Oak-forest wood rush is an occasional introduction from Europe, mostly confined to the northeastern United States. It is sometimes used as a hardy ground cover in horticulture.

Habitat

Anthropogenic (man-made or disturbed habitats), forests, meadows and fields, woodlands

Characteristics

Habitat
terrestrial
New England state
  • Connecticut
  • Maine
  • Massachusetts
  • Vermont
Stem shape in cross-section
the stem is round or oval in cross-section
Leaf blade width
2–6 mm
Leaf blade cross-section
the leaf blade is flat or rolled in at the edges
Inflorescence position
the inflorescence is at the tip of the plant
Inflorescence branching
the inflorescence is branched
Fruit type (general)
the fruit is a capsule, with at least three seeds in it
Fruit length
1.5–1.8 mm
Leaf position on plant
some leaf attachment points are above the midpoint of the stem
Perianth composition
the perianth is green or brown, with six sepal-like parts, and a leafy texture
Fruit cross-section
the fruit is triangular to terete (circular) in cross-section
Show All Characteristics
  • Flowers
    Anther color (dry)
    the anthers range in color from white to tan or yellow to yellow-brown
    Floral bristle color
    NA
    Floral bristle number
    NA
    Floral bristle relative length
    NA
    Floral bristles
    NA
    Floral scale hairs
    NA
    Floral scale length
    0 mm
    Floral scale nerves
    NA
    Flower number per cluster
    • 2-5
    • 5-20
    Inflorescence bract angle
    the bracts are vertical or angled only slightly outwards
    Inflorescence bract number
    there are two to five bracts per inflorescence
    Inflorescence bract position (Sparganium)
    NA
    Inflorescence bracts
    there are at least two bracts, and they are either flat or folded or rolled in at the edges
    Inflorescence branching
    the inflorescence is branched
    Inflorescence crowding
    the inflorescence is at least somewhat spread out, with at least one branch coming from the main stem
    Inflorescence position
    the inflorescence is at the tip of the plant
    Inflorescence shape
    the aggregations within the inflorescence are roughly circular (not flattened) in cross-section
    Inflorescence type
    there are two or more flowers, spikes or flower clusters on a branched inflorescence
    Perianth composition
    the perianth is green or brown, with six sepal-like parts, and a leafy texture
    Stamen number
    4-6
    Stigma number
    3
    Style division
    the top two thirds of the style is divided
    floral bristle barbs
    NA
  • Fruits or seeds
    Achene beak length
    0 mm
    Achene surface texture
    NA
    Achene tubercle relative width
    NA
    Achene tubercle width
    0 mm
    Capsule relative length
    the capsule is about equal to the perianth
    Fruit cross-section
    the fruit is triangular to terete (circular) in cross-section
    Fruit length
    1.5–1.8 mm
    Fruit type (general)
    the fruit is a capsule, with at least three seeds in it
    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)
    Locules in capsule
    the capsule has one locule
    Seed length
    0.8–1.1 mm
    Seed tail relative length
    1–1.3 mm
    Seed tails
    the seeds have tail-like projections
    Tubercle height
    0 mm
  • Growth form
    Lifespan
    the plant lives more than two years
    Rhizome thickness
    1–1.5 mm
    Underground organs
    the plant has a rhizome (a horizontal underground stem with roots growing from it)
  • Leaves
    Auricle length
    0 mm
    Auricle texture
    NA
    Auricles
    there are no auricles on the leaf sheath
    Leaf blade cross-section
    the leaf blade is flat or rolled in at the edges
    Leaf blade length
    150–300 mm
    Leaf blade width
    2–6 mm
    Leaf form
    all the leaves hold their form out of water
    Leaf position on plant
    some leaf attachment points are above the midpoint of the stem
    Leaf septa
    the leaf blades do not have transverse septa
    Leaf sheath hairs
    the leaf sheathes have hairs on them
    Pedicel length (Typha)
    0 mm
    Stem leaf blade ligules
    there are no ligules at the leaf blade bases
    Stem leaf blades
    there are fully-developed leaves with leaf blades on the main stem
  • Place
    Habitat
    terrestrial
    New England state
    • Connecticut
    • Maine
    • Massachusetts
    • Vermont
    Specific habitat
    • forests
    • man-made or disturbed habitats
    • meadows or fields
    • woodlands
  • Stem, shoot, branch
    Plant height
    45–70 cm
    Stem shape in cross-section
    the stem is round or oval in cross-section

Wetland Status

Not classified

New England Distribution and Conservation Status

Distribution

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

Native to North America?

No

Sometimes Confused With

Luzula parviflora:
flowers solitary or paired and anthers equaling or shorter than the associated filaments (vs. L. luzuloides, with flowers in glomerules of 3-8 and anthers much longer than the associated filaments).

Synonyms

  • Juncoides nemorosum (Pollard) Kuntze

Family

Juncaceae

Genus

Luzula

Notes on Subspecies and Varieties in New England

Our subspecies is Luzula luzuloides (Lam.) Dandy & Wilmott ssp. luzuloides.

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Information from Dichotomous Key of Flora Novae Angliae

6.  Luzula luzuloides (Lam.) Dandy & Wilmott ssp. luzuloides E

oak-forest wood rush. Juncoides nemorosum (Pollard) Kuntze • CT, MA, ME, VT. Forests, woodlands, fields, roadsides.