Definition

Noun: 1. A tree species: A North American tree (Sorbus scopulina, syn. Sorbus sitchensis) of the rose family, native to western coastal and mountainous regions. It is characterized by clusters of white flowers, bright red berries, and leaves that resemble those of an ash tree.

Usage Examples

• Noun:
  • The bright red berries of the western mountain ash attract many birds in the autumn.
  • We identified a western mountain ash growing near the trailhead by its compound leaves and berry clusters.

Advanced Usage

• In botanical or ecological contexts: The term is used specifically to denote this species within scientific, forestry, or naturalist writing, distinguishing it from the European mountain ash (rowan) or other regional varieties.
  • The study compared the germination rates of western mountain ash seeds from different elevations.

Variants and Related Words

• Sorbus scopulina (n): The primary scientific name for this species.
• Sitka mountain ash (n): A common alternative name, referencing the Sitka region.
• Rowan (n): A common name for related European trees (), which are similar in appearance but a different species.
• Mountain ash (n): The broader common name for trees in the genus, which includes the western mountain ash.

Synonyms

• Sitka mountain ash (n)
• Greene's mountain ash (n) (for the variety var. )

Notes on Meaning

• Not a true ash: It is critical to note that the "western mountain ash" is not a true ash tree (genus ). It is named for the visual similarity of its leaves. This is a key distinction in botany and horticulture.

Noun

1. an ash of the western coast of North America