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- Cladrastis kentukea
Cladrastis kentukea — Kentucky yellow-wood
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Facts
Kentucky yellow-wood hails from the southeastern United States (hardiness zones 4-8) and is not regarded as native to New England. A member of the legume family, this tree produces showy, sweet-smelling white-yellow flowers that mature into long, slender pods. It is called "yellowwood" because it produces a yellow dye that imparts a distinctive yellow cast to the heartwood.
Habitat
Anthropogenic (man-made or disturbed habitats), forest edges
New England distribution
Adapted from BONAP data
Native: indigenous.
Non-native: introduced (intentionally or unintentionally); has become naturalized.
County documented: documented to exist in the county by evidence (herbarium specimen, photograph). Also covers those considered historical (not seen in 20 years).
State documented: documented to exist in the state, but not documented to a county within the state. Also covers those considered historical (not seen in 20 years).
Note: when native and non-native populations both exist in a county, only native status is shown on the map.
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Characteristics
- Habitat
- terrestrial
- New England state
-
- Connecticut
- Massachusetts
- Growth form
- the plant is a tree
- Leaf type
- the leaf blade is compound (i.e., made up of two or more discrete leaflets
- Leaves per node
- there is one leaf per node along the stem
- Leaf blade edges
- the edge of the leaf blade has no teeth or lobes
- Leaf duration
- the leaves drop off in winter (or they wither but persist on the plant)
- armature on plant
- the plant does not have spines, prickles, or thorns
- Leaf blade length
- 40–200 mm
- Leaf stalk
- the leaves have leaf stalks
- Fruit type (general)
-
- the fruit is dry and splits open when ripe
- the fruit is dry but does not split open when ripe
- Bark texture
- the bark of an adult plant is thin and smooth
- Twig winter color
-
- brown
- purple
- red
- Bud scale number
- there are no scales on the winter buds
-
Buds or leaf scars
- Bud scale number
- there are no scales on the winter buds
- Bud scar shape (Fraxinus)
- NA
- Collateral buds
- there are no collateral buds on the sides of the branches
- Superposed buds
- there are no superposed buds on the branch
-
Flowers
- Carpels fused
- the carpel is solitary or (if 2 or more) the carpels are not fused to one another
- Enlarged sterile flowers
- there are no enlarged sterile flowers on the plant
- Flower petal color
- white
- Flower symmetry
- there is only one way to evenly divide the flower (the flower is bilaterally symmetrical)
- Hairs on ovary (Amelanchier)
- NA
- Hypanthium present
- the flower has a hypanthium
- Inflorescence type
- the inflorescence is a panicle (branched with the individual flowers on stalks)
- Number of pistils
- 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 fused to form a tube, cup, or bell shape
- the perianth parts are separate
- Sepal cilia (Ilex)
- NA
- Sepals fused only to sepals
- the sepals are fused to each other (not other flower parts), at least near their bases
- Stamen number
- 10
- Stamens fused
- the stamens are not fused to one another
-
Fruits or seeds
- Berry color
- NA
- Fruit tissue origin
-
- the hypanthium of the flower becomes part of the fruit
- there are no flower parts that form part of the fruit
- Fruit type (general)
-
- the fruit is dry and splits open when ripe
- the fruit is dry but does not split open when ripe
- Fruit type (specific)
- legume
- Nut with spines (Fagaceae)
- NA
- Wings on fruit
- there are no wings on the fruit
-
Glands or sap
- Sap color
- the sap is clear and watery
- Stalked glands on fruit (Rosa)
- NA
-
Growth form
- Growth form
- the plant is a tree
-
Leaves
- Hairs on upper side of leaf blade
- the upper side of the leaf is not hairy, or has very few hairs
- 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 edges
- the edge of the leaf blade has no teeth or lobes
- Leaf blade edges (Acer)
- NA
- Leaf blade flatness
- the leaf is flat (planar) at the edges
- Leaf blade hairs
- NA
- Leaf blade length
- 40–200 mm
- Leaf blade scales
- there are no scales on the leaf blades
- 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 texture
-
- the leaf blade is herbaceous (has a leafy texture)
- the leaf blade is membranaceous (thin, flexible, almost translucent)
- Leaf blade translucent dots
- there are no translucent dots on the leaf blade
- Leaf duration
- the leaves drop off in winter (or they wither but persist on the plant)
- Leaf lobe tips (Quercus)
- NA
- Leaf midrib glands
- the midrib of the leaf blade lacks glands on the upper surface
- Leaf stalk
- the leaves have leaf stalks
- Leaf stalk nectaries
- there are no nectaries on the leaf stalk
- Leaf teeth
- the edge of the leaf blade is entire (has no teeth or lobes)
- Leaf teeth hairs (Carya)
- NA
- Leaf type
- the leaf blade is compound (i.e., made up of two or more discrete leaflets
- Leaves per node
- there is one leaf per node along the stem
- Specific leaf type
- the leaf is compound, with a single terminal leaflet and more than two additional leaflets
- Stipules
- there are no stipules on the plant, or they fall off as the leaf expands
-
Place
- Habitat
- terrestrial
- New England state
-
- Connecticut
- Massachusetts
- Specific habitat
-
- edges of forests
- man-made or disturbed habitats
-
Scent
- Plant odor
- the plant does not have much of an odor, or it has an unpleasant or repellant odor
-
Stem, shoot, branch
- Aerial roots
- the plant has no aerial roots
- Bark texture
- the bark of an adult plant is thin and smooth
- Branch brittleness (willows only)
- NA
- Branch cross-section
- the branch is circular in cross-section, or it has five or more sides, so that there are no sharp angles
- First-year cane (Rubus)
- NA
- Twig papillae (Vaccinium species only)
- NA
- Twig winter color
-
- brown
- purple
- red
- Wings on branch
- the branch does not have wings on it
- armature on plant
- the plant does not have spines, prickles, or thorns
Wetland status
Not classified
In New England
Distribution
- Connecticut
- present
- Maine
- absent
- Massachusetts
- present
- New Hampshire
- absent
- Rhode Island
- absent
- Vermont
- absent
Conservation status
Exact status definitions can vary from state to state. For details, please check with your state.
- Massachusetts
- not applicable (S-rank: SNA)
From Flora Novae Angliae dichotomous key
1. Cladrastis kentukea (Dum.-Cours.) Rudd E
Kentucky yellow-wood. Cladrastis lutea (Michx. f.) K. Koch; Sophora kentukea Dum.-Cours. • CT, MA; also reported from RI by Kartesz (1999), but specimens are unknown. Roadsides, forest borders and fragments, areas of habitation.
Native to North America?
Yes and no (some introduced)
Synonyms
- Cladrastis lutea (Michx. f.) K. Koch
- Sophora kentukea Dum.-Cours.