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• Orchids and related plants
• Irises, lilies, and other "monocots"
• Ornithogalum umbellatum

Ornithogalum umbellatum — nap-at-noon

Facts

Nap-at-noon is widely planted as a garden ornamental, producing an abundance of bulblets that are transported in soil and can become very weedy. The flowers open just before noon and close before sunset every day.

Habitat

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

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

  4–20

  Flower petal color

  • green to brown
  • white

  Flower petal length

  15–30 mm

  Flower symmetry

  there are two or more ways to evenly divide the flower (the flower is radially symmetrical)

  Fringed petal edges

  the petals are not fringed

  Inflorescence type

  the inflorescence is a corymb (with long lower branches and shorter upper branches, giving it a more or less flat-topped look)

  Marks on petals

  the petals have spots or streaks on them

  Nectar spur

  the flower has no nectar spurs

  Number of pistils

  1

  Number of styles

  1

  Ovary position

  the ovary is above the point of petal and/or sepal attachment

  Petal and sepal arrangement

  the flower includes two cycles of petal- or sepal-like structures

  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

  Sepal length

  15–30 mm

  Sepals fused only to sepals

  the sepals are separate from one another

  Spathe

  the plant does not have a spathe

  Spathe form

  NA

  Stamen number

  6

  Stamen position relative to petals

  NA

  Stamens fused outwards

  • the stamens are fused to the petals or tepals at or near their bases
  • 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

  Capsule ridges

  • there are no ribs or wings on the capsule
  • there are six or more ribs or wings on the capsule

  Fruit compartments

  there are three locules in the fruit

  Fruit length

  8–18 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)

  Fruit width

  6–15 mm

  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 one or more swollen storage organs underground, such as bulbs, tubers or corms

• Leaves

  Leaf arrangement

  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 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 U- or V-shaped
  • the leaf blade is more or less flat in cross-section

  Leaf blade faces

  both surfaces of the leaf blade are exposed

  Leaf blade form

  Fully-formed (i.e., expanded), +/- green leaf blades are found somewhere on the plant

  Leaf blade length

  200–600 mm

  Leaf blade shape

  • the leaf blade is lanceolate (lance-shaped; widest below the middle and tapering at both ends)
  • the leaf blade is linear (very narrow with more or less parallel sides)

  Leaf blade surface colors

  the upper side of the leaf blade has obvious spots, mottles or stripes

  Leaf blade veins

  the lateral veins are parallel or slightly arched in the direction of the tip

  Leaf blade width

  3–5 mm

  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

  New England state

  • Connecticut
  • Maine
  • Massachusetts
  • New Hampshire
  • Rhode Island
  • Vermont

  Specific habitat

  • edges of forests
  • man-made or disturbed habitats
  • meadows or fields

• Scent

  Plant odor

  the leaves have no particular smell

• Stem, shoot, branch

  Flowering stem leaves

  there are no true leaves on the flowering stem

Wetland status

Usually occurs in non-wetlands, but occasionally in wetlands. (Wetland indicator code: FACU)

New England distribution and conservation status

From the dichotomous key of Flora Novae Angliae