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• Logfia minima

Logfia minima — little false cotton-rose

Facts

A diminutive weed native to Eurasia, little false cotton-rose has made an occasional appearance in North America in ship ballast dumps and open disturbed areas since 1878.

Habitat

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

Characteristics

• Flowers

  Bract cycle number

  there is one main cycle of bracts

  Bract inner side hairs

  the bracts are not hairy on their inner surfaces

  Bract margins

  • there are few or no fine hairs along the bract margins
  • there are fine hairs along the bract margins

  Bract outer side hair type

  • the bracts are hairy on their outer surfaces, with curled, tangled, matted, or woolly hairs
  • the bracts are not hairy on their outer surface

  Bract outer side hairs

  • the bracts are hairy on their outer surfaces
  • the bracts are not hairy on their outer surfaces

  Bract shape

  the main bracts are of a different shape than the given options

  Bract spines

  the bracts have no spines

  Bract width

  0.8–1

  Bracts

  the bracts in separate cycles are similar or gradually changing from the outer to inner cycles

  Disk flower color

  • green to brown
  • white
  • yellow

  Disk flower lobe number

  4

  Disk flower number

  • 21-50
  • more than 50

  Disk flower reproductive parts

  • the disk flower has both pollen- and seed-producing parts
  • the disk flower has either only pollen- or only seed-producing parts

  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 platform

  the base has papery scales on it

  Flower head position

  some or all the flower heads are grouped in clusters of two or more

  Flower head profile

  • the disk bulges out at the sides, and is then rounded over the top
  • the disk is flat or nearly flat across the top

  Flower head width

  1.5–2 mm

  Flower type in flower heads

  the flower head has disk flowers only, and lacks the strap-shaped flowers

  Height of flower head base

  2.5–3.5 mm

  Inflorescence shape

  • the flower heads grow in clusters from the axils of the branches or leaves
  • the inflorescence is not flat-topped but appears rounded, with some flower heads distinctly higher than others

  Inflorescence stem

  hairs are present on the stem of the inflorescence

  Number of bracts at flower head base

  5

  Ovary attachment

  the ovary is attached at or near the base

  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 another shape
  • in profile, the ovary is roughly egg-shaped, but widest above the middle

  Ovary surface

  • NA
  • the ovary surface is textured with tiny points, bumps or wrinkles

  Ray flower color

  NA

  Ray flower reproductive parts

  NA

  Ray flowers

  NA

  Reproductive system

  some of the flowers on the plant have only carpels or stamens, while others have both carpels and stamens

  Scale tip

  the scales are blunt, with a terminal notch, or straight across the top

  Style branches

  the style branch is wider at the tip and has a flattened end, or the style branches are wider at the tips and have flattened ends

• Fruits or seeds

  Number of pappus parts

  11 or more

  Ovary length in developed fruit

  0.5–0.9 mm

  Seed hair tuft details

  the pappus hairs are smooth and plain

  Seed hair tuft length

  1.8–2.1 mm

  Seed hair tuft tips

  the pappus hairs are slender

  Seed hairs uniform

  all the pappus hairs are approximately the same length

  Seed tuft type

  the pappus is made of very fine hairs or bristles

  Tuft or plume on fruit

  • NA
  • there is no plume, or the plume is made up of scales, awns, a crown, or a rim

• 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

• Leaves

  Hairs on underside of leaf blade

  the underside of the leaf is fuzzy or hairy

  Hairs on upper side of leaf blade

  the upper side of the leaf is fuzzy or hairy

  Leaf arrangement

  alternate: there is one leaf per node along the stem

  Leaf blade base

  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 bloom

  the underside of the leaf has no noticeable bloom

  Leaf blade edges

  the edge of the leaf blade has no teeth or lobes

  Leaf blade flatness

  the leaf is flat (planar) at the edges

  Leaf blade hairs

  the leaf blade has tangled or woolly-looking hairs

  Leaf blade length

  7–12 mm

  Leaf blade shape

  • the leaf blade is elliptic (widest near the middle and tapering at both ends)
  • the leaf blade is ovate (widest below the middle and broadly tapering at both ends)

  Leaf blade tip

  the tip of the leaf blade is acute (sharply pointed)

  Leaf blade width

  1–2 mm

  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 stalk

  the leaves have no leaf stalks, but attach directly to the stem

  Leaf type

  leaves are simple (i.e., lobed or unlobed but not separated into leaflets)

  Specific leaf type

  the leaves are simple (i.e., lobed or unlobed but not separated into leaflets

• Place

  Habitat

  terrestrial

  New England state

  Massachusetts

  Specific habitat

  • man-made or disturbed habitats
  • meadows or fields

• Stem, shoot, branch

  Leaves on stem

  there is at least one full leaf above the base of the flowering stem

  Stem bloom

  NA

  Stem internode hair direction

  the hairs point mostly upwards to outwards

  Stem internode hair type

  at least some of the hairs on the stem are tangled, matted or woolly

  Stem internode hairs

  the stem has hairs between the nodes

Wetland status

Not classified

New England distribution and conservation status

From the dichotomous key of Flora Novae Angliae