American mountain-ash

Leaves

Form

• Leaflets lance-shaped
• Taper-pointed, thin
• Lower surface hairless
• Narrower than showy mountain-ash

Length

• Leaflets 5–8 cm

Colour

• Upper surface light green
• Lower surface paler

Buds

Form

• Scales mostly hairless

Flowers

Form

• In dense, flattish clusters (corymbs)
• Petals broadest toward the tip
• Stalks hairless

Length

• 3–4 mm

Structure

• Synoecious

Floral timing

• May and June
• About 1 week earlier than showy mountain-ash

Fruits

Form

• Maturing in August
• Flesh thin

Width

• 4–6 mm

Colour

• Bright coral-red

Structure

• Pome

Size

Height

• Up to 10 m

Tree form

Forest-grown

Trunk

• Short, with spreading slender branches

Crown

• Narrow, open
• Round-topped

Habitat

Site

• Moist sites bordering swamps
• Rocky hillsides
• Dry soils