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- Dichotomous Key
- Pinaceae
- Pinus
- Pinus resinosa
Pinus resinosa — red pine
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Facts
Red pine is a tall, straight pine, distinctive for its scaly, reddish bark. In natural stands, fire is needed to prepare the seedbed and eliminate competing species so that red pine can grow. This species is grown widely in plantations because its tall, straight boles produce a commercially important timber for woodwork, poles, and many other uses. About 100 insect species are known to consume red pine.
Habitat
Anthropogenic (man-made or disturbed habitats), ridges or ledges, wetland margins (edges of wetlands), woodlands
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.
Found this plant? Take a photo and post a sighting.
Characteristics
- Habitat
-
- terrestrial
- wetlands
- New England state
-
- Connecticut
- Maine
- Massachusetts
- New Hampshire
- Rhode Island
- Vermont
- Growth form
- the plant is a tree
- Leaf form
- the leaves are needle-like
- Leaf cross-section
- the needle-like leaves are rounded, or flattened on one side (can be rolled between the fingers)
- Leaf arrangement
- the needle-like leaves are in clusters or held on short shoots
- Seed cone form
- the seed cone is longer than wide, with woody scales attached at the base
- Leaf clustering
- the needle-like leaves are in bundles or clusters of two
- Leaves overlapping
- the needle-like leaves are separate and do not hide the twig surface
-
Buds or leaf scars
- Winter bud shape
- the winter buds are ovoid (egg-shaped)
-
Fruits or seeds
- Seed cone base
- the base of the seed cone looks hollow
- Seed cone bracts
- the bracts are covered by the seed cone scales
- Seed cone form
- the seed cone is longer than wide, with woody scales attached at the base
- Seed cone scales
- the visible portion of the scale of the closed seed cone is thickened at its base
- Seed cone symmetry
- the seed cone is symmetrical
- Seed cone umbo position
- the raised portion is at the tip of the seed cone scale
- Seed cone umbo spine
- the seed cone scale does not have a sharp point
- Seed wings
- the seeds have wing-like projections
-
Growth form
- Growth form
- the plant is a tree
-
Leaves
- Leaf arrangement
- the needle-like leaves are in clusters or held on short shoots
- Leaf base
- NA
- Leaf clustering
- the needle-like leaves are in bundles or clusters of two
- Leaf cross-section
- the needle-like leaves are rounded, or flattened on one side (can be rolled between the fingers)
- Leaf duration
- the needle-like leaves remain green all winter
- Leaf form
- the leaves are needle-like
- Leaf glands
- there are no glands on the underside of the needle-like leaves
- Leaf stalks
- the needle-like leaves do not have a leaf stalk
- Leaf types
- there are two distinct types of needle-like leaves on the twig
- Leaves overlapping
- the needle-like leaves are separate and do not hide the twig surface
-
Place
- Habitat
-
- terrestrial
- wetlands
- New England state
-
- Connecticut
- Maine
- Massachusetts
- New Hampshire
- Rhode Island
- Vermont
- Specific habitat
-
- edges of wetlands
- man-made or disturbed habitats
- ridges or ledges
- woodlands
-
Stem, shoot, branch
- Bark resin blisters
- there are no resin blisters on the bark
- Branchlet thickness
- 4–8 mm
- Leaves on shoots
- there are needle-like leaves growing in tight clusters on a short, knob-like shoot
- Twig bloom
- there is no bloom on the twig
- Twig hair type
- the twigs have few or no hairs on them
- Twig hairs
- the twig does not have hairs
Wetland status
Usually occurs in non-wetlands, but occasionally in wetlands. (Wetland indicator code: FACU)
In New England
Distribution
- Connecticut
- present
- Maine
- present
- Massachusetts
- present
- New Hampshire
- present
- Rhode Island
- present
- Vermont
- present
Conservation status
Exact status definitions can vary from state to state. For details, please check with your state.
- Connecticut
- extremely rare (S-rank: S1), endangered (code: E)
- Maine
- widespread (S-rank: S5)
- Massachusetts
- rare to uncommon (S-rank: S2S3)
From Flora Novae Angliae dichotomous key
4. Pinus resinosa Ait. N
red pine. CT, MA, ME, NH, RI, VT. Nutrient-poor, sandy and/or rocky soils, occasionally in wetlands with a well-developed organic soil horizon.
Native to North America?
Yes and no (some introduced)
Sometimes confused with
- Pinus banksiana:
- needle like leaves mostly 2-7 cm long, twisted, and seed cones asymmetrical, curved and/or more developed on one side (vs. P. resinosa, with needle-like leaves mostly 9-16 cm long, not or only slightly twisted and seed cones relativley symmetrical).
- Pinus nigra:
- needle-like leaves flexible, not breaking when bent, seed cones falling with the basal scales present, and smaller branches brown to gray-brown (vs. P. resinosa, with needle-like leaves brittle, breaking when bent, seed cones falling with some basal scales missing, and smaller branches orange-brown).