Marsilea
clover-fern, pepperwort, waterclover
3 species
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Marsilea mutica – Australian waterclover
Distribution: Occurring in scattered counties west of the Cascades crest in Washington; also known from California and the southeastern U.S.
Habitat: Lowland ponds in water to 1 meter deep.
Origin: Introduced from Australia
Spores: June-October
Growth Duration: Perennial
Distribution: Occurring in scattered counties west of the Cascades crest in Washington; also known from California and the southeastern U.S.
Habitat: Lowland ponds in water to 1 meter deep.
Origin: Introduced from Australia
Spores: June-October
Growth Duration: Perennial
Marsilea oligospora – Nelson's pepperwort, Pacific clover-fern water-clover
Distribution: Occurring east of the Cascades crest in Washington; Washington to California, east to Montana, Wyoming, and Utah.
Habitat: Ponds and marshes, in wet depressions in sagebrush and less commonly on river margins.
Origin: Native
Spores: June-October
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; Washington to California, east to Montana, Wyoming, and Utah.
Habitat: Ponds and marshes, in wet depressions in sagebrush and less commonly on river margins.
Origin: Native
Spores: June-October
Growth Duration: Perennial
Marsilea vestita – hairy clover-fern, pepperwort, water-clover pepperwort
Distribution: Occurring chiefly east of the Cascades crest and in the Columbia River Gorge in Washington; British Columbia to California, east to the Great Plains and southeastern U.S.
Habitat: Ponds, vernal pools, and floodplains from low to middle elevations.
Origin: Native
Spores: April-October
Growth Duration: Perennial
Distribution: Occurring chiefly east of the Cascades crest and in the Columbia River Gorge in Washington; British Columbia to California, east to the Great Plains and southeastern U.S.
Habitat: Ponds, vernal pools, and floodplains from low to middle elevations.
Origin: Native
Spores: April-October
Growth Duration: Perennial
