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Patersonia umbrosa, known as yellow flags, is a loosely tufted, rhizomatous perennial iris from south-west Western Australia with blue-violet or yellow flowers. It is a native bush plant that suits a moist, well-drained or seasonally wet spot in a mild climate.
Patersonia umbrosa, commonly known as yellow flags, is a species of plant in the iris family Iridaceae and is endemic to the south-west of Western Australia. It is a loosely-tufted, rhizome-forming, perennial herb with linear to sword-shaped leaves and deep bluish-violet or bright yellow tepals.
Variety umbrosa grows in scrub, woodland and forest in poorly-drained soil between the Deep River, the Stirling Range and the Fitzgerald River in the Esperance Plains, Jarrah Forest and Warren biogeographic regions. Variety xanthina grows in forest from the southern Darling Range to the Deep River in the Jarrah Forest, Swan Coastal Plain and Warren biogeographic regions of south-western Western Australia.
Patersonia argyrea · Patersonia babianoides · Patersonia borneensis · Patersonia drummondii · Short Purple Flag · Leafy Purple Flag · Patersonia graminea · Patersonia inaequalis · Rush Leaved Patersonia · Woolly Patersonia · Patersonia limbata · Patersonia macrantha
Text excerpted from the Wikipedia article Patersonia umbrosa by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.
The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
