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• Luzula confusa

Luzula confusa — northern wood rush

Facts

Northern wood rush is circumboreal above the arctic circle, with occasional occurrences as far south as New England. It has been collected in Maine and New Hampshire on alpine ridges, cliffs and rock slides.

Habitat

Alpine or subalpine zones, cliffs, balds, or ledges, ridges or ledges

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

  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
  • the inflorescence is crowded together in one tight cluster

  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

  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
  • the capsule is shorter than the perianth

  Fruit cross-section

  the fruit is triangular to terete (circular) in cross-section

  Fruit length

  Up to 2.8 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

  0.8–1.2 mm

  Seed tail relative length

  0.8–1.2 mm

  Seed tails

  the seeds have tail-like projections

  Tubercle height

  0 mm

• 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)

• 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

  Up to 60 mm

  Leaf blade width

  1–3 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
  • the attachment points of all the leaves are at or near the base of the plant

  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

  • Maine
  • New Hampshire

  Specific habitat

  • alpine or subalpine zones
  • cliffs, balds, or ledges
  • ridges or ledges

• Stem, shoot, branch

  Plant height

  3–28 cm

  Stem shape in cross-section

  the stem is round or oval in cross-section

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