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Bransford, W.D. and Dolphia

Caltha leptosepala ssp. howellii

Caltha leptosepala DC. ssp. howellii (Huth) P.G. Sm.

Howell's Marsh Marigold

Ranunculaceae (Buttercup Family)

Synonym(s): Caltha biflora, Caltha biflora ssp. howellii, Caltha howellii, Caltha leptosepala ssp. biflora, Caltha leptosepala var. biflora

USDA Symbol: CALEH2

USDA Native Status: L48 (N), AK (N), CAN (N)

From the Image Gallery

2 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Perennial
Habit: Herb
Fruit Type: Follicle
Size Notes: Up to about 10 inches tall when flowering.

Bloom Information

Bloom Color: White , Yellow
Bloom Time: May , Jun , Jul , Aug
Bloom Notes: White to pale yellow.

Distribution

USA: AK , CA , ID , MT , NV , OR , WA
Canada: BC
Native Habitat: Bog/Fen

Growing Conditions

Soil Moisture: Wet

Benefit

Conspicuous Flowers: yes

Web Reference

Webref 62 - Burke Herbarium Image Collection (2020) University of Washington
Webref 30 - Calflora (2018) Calflora
Webref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter

Additional resources

USDA: Find Caltha leptosepala ssp. howellii in USDA Plants
FNA: Find Caltha leptosepala ssp. howellii in the Flora of North America (if available)
Google: Search Google for Caltha leptosepala ssp. howellii

Metadata

Record Modified: 2022-11-03
Research By: TWC Staff

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