Anemone deltoidea

Anemone deltoidea Hook.:
United States (North America)

Note: This information is based on publications available through Tropicos and may not represent the entire distribution. Tropicos does not categorize distributions as native or non-native.

Calif., Oreg., Wash.

United States

Origin: Unknown/Undetermined

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

Aerial shoots (7.5-)10-30 cm, from rhizomes, rhizomes horizontal. Basal leaves 0-2, ternate; petiole 10-15 cm; terminal leaflet sessile, ovate to rhombic, (2.5-)3-5(-6) × (2-)2.5-3.5 cm, base slightly oblique to broadly cuneate, margins crenate to serrate on distal 2/3, apex acuminate, surfaces abaxially glabrous, rarely puberulous on veins, adaxially usually glabrous; lateral leaflets unlobed, rarely 1×-lobed; ultimate lobes (8-)10-20 mm wide. Inflorescences 1-flowered; peduncle sparsely hispid or glabrous; involucral bracts 3, 1-tiered, simple, ±similar to terminal leaflets of basal leaves, ovate, rarely rhombic, (2.5-)4-8 cm, bases distinct, broadly cuneate, margins crenate to serrate, or dentate on distal 2/3, apex acuminate, surfaces usually glabrous; lateral leaves unlobed or occasionally 1×-lobed; ultimate lobes 8-15 mm wide. Flowers: sepals usually 5, white, ovate to obovate, rarely oblanceolate, (12-)15-25 × (8-)10-15(-20) mm, glabrous; stamens 100-120. Heads of achenes spheric; pedicel (5-)7-12 cm. Achenes: body ovoid, swollen, 2.5-4 × 2-3 mm, not winged, proximally hispid, distally glabrous; beak straight to subulate, 0.5 mm or less, glabrous. 2 n =14.

Open to deep woods; 200-2000m.

Flowering spring-summer (Apr-Jul).

United States

Rounded National Status Rank: NNR - Unranked

Rounded Global Status Rank: G5 - Secure