Arnica (5)

Heartleaf Arnica
Arnica cordifolia

Family: Sunflower (Asteraceae)
AKA:
Photo taken on: May 27, 2006
Location: Almont, CO
Life Zones: Montane and subalpine
Habitat: Moist forests

Grows to 2ft with heart-shaped, velvety leaves with stalks. The most common arnica.

Flora of North America reference.

Broadleaf Arnica
Arnica latifolia

Family: Sunflower (Asteraceae)
AKA:
Photo taken on: July 24, 2005
Location: Lily Lake Trail, GV, CO
Life Zones: Subalpine
Habitat: Moist forests

Grows to 10" with sharply toothed leaves that have no stalks compared to Heartleaf Arnica. All arnicas have opposite leaves.

Flora of North America reference.

Hairy Arnica
Arnica mollis

Family: Sunflower (Asteraceae)
AKA: Subalpine Arnica
Photo taken on: July 30, 2005
Location: Green Lake Trail, GV, CO
Life Zones: Subalpine to alpine
Habitat: Moist areas, stream banks

Grows to 2ft in colonies with a hairy, sticky stem and large flowers.

Flora of North America reference.

Subalpine Arnica
Arnica rydbergii

Family: Sunflower (Asteraceae)
AKA: Rydberg's Arnica
Photo taken on: August 14, 2005
Location: Hasley Basin Trail, GV, CO
Life Zones: Subalpine and alpine
Habitat: Rocky slopes

Grows to 12" tall in patches with widely spaced, smooth, green leaves.

Flora of North America reference.

Chamisso Arnica
Arnica chamissonis

Family: Sunflower (Asteraceae)
AKA: Leafy Arnica
Photo taken on: July 19, 2008
Location: Almont Triangle, GV, CO
Life Zones: Foothills to montane
Habitat: Moist meadows

Grows 2-3ft tall in dense patches covered in soft hairs. Flower heads to 2" across have bracts that are tipped with a tuft of white hairs. Petals are notched.

Flora of North America reference.