Yellow Thimbleweed – Anemone richardsonii

Alaska Wildflowers | Yellow

Yellow thimbleweed, also known as yellow anemone flowering in Alaska.

Yellow thimbleweed

Anemone richardsonii

Common Names

yellow anemone
yellow thimbleweed
yellow windflower
Richardson’s anemone

Synonyms

Jurtsevia richarsonii

Genus: Anemone
Family: Ranunculaceae
Order: Ranunculales
Full Classification

Duration and Growth Habit

Perennial – Forb/herb

Uses

For information only (typically historical) – I take no responsibility for adverse effects from the use of any plant.



Whole plant is poisonous DO NOT EAT!

While the plant is toxic, it has been used as a medicine to treat toothaches and rheumatism. Like other flowers in the Ranunculaceae family (buttercup), it contains anemonin which can be used as an analgesic. I have found no record of what part of the plant is used or how it is prepared. Like always, I never recommend the medicinal use of any plant without a recommendation from a health professional.

Identification and Information

Yellow thimbleweed, also known as yellow anemone is a yellow flowering plant that grows from horizontal rhizomes. The stems are aerial shoots from the rhizome and stand 5-30 cm (2-12 inches) tall. Anemone richardsonii typically has palmately lobed leaves on the rhizome. Leaves on the stem are also serrated, 3-parted, and whorled, forming a ring below the flowers.

The stem is single-flowered with 6 (can have 4-8) yellow, elliptic sepals, and no petals, but the sepals resemble petals (petaloid-sepals) with their bright yellow color. The flower is 1.5-2.5 cm (0.5-1 in) in diameter. It has 30-40 yellowish stamens and 20-35 greenish ovary carpels, each containing 1 stigma and 1 ovule. It is the only northern anemone flower that is yellow.

Distribution and Habitat

In North America, anemone richardsonii is found in Alaska, Greenland, and across Canada. It’s also found in eastern Siberia.

Yellow thimbleweed lives in moist areas and is often found near snow patches in early spring, along rivers and streams, mossy soil, and wet meadows and tundra.

Classification

KingdomPlantae  – plantes, Planta, Vegetal, plants
   SubkingdomViridiplantae  – green plants
      InfrakingdomStreptophyta  – land plants
         SuperdivisionEmbryophyta 
            DivisionTracheophyta  – vascular plants, tracheophytes
               SubdivisionSpermatophytina  – spermatophytes, seed plants, phanérogames
                  ClassMagnoliopsida 
                     SuperorderRanunculanae 
                        OrderRanunculales 
                           FamilyRanunculaceae  – buttercups, boutons d’or, crowfoot
                              GenusAnemone L. – anemone
                                 SpeciesAnemone richardsonii Hook. – yellow thimbleweed

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References and Further Reading

Guidebook

Field Guide to Alaskan Wildflowers, Pratt, Verna E. pg 35

Classification/Taxonomy

Anemone richardsonii  Hook. Taxonomic Serial No.: 18434, ITIS Database

Anemone richardsonii Hook. yellow thimbleweed, USDA Database

Identification and Information

Anemone richardsonii Hooker, Fl. Bor.-Amer. 1: 6. 1829., Flora of North America

Anemone richardsonii : Yellow Wind-flower, Central Yukon Species Inventory Project

Anemone richardsonii Hooker, Flora of the Canadian Arctic Archipelago

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