Hydrophyllaceae

Ballhead waterleaf

Hydrophyllum capitatum Douglas ex Benth.

Family: Hydrophyllaceae
Genus: Hydrophyllum

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Common names

By language (2)

Arabic: ثجمة بنقوسية
English: Ballhead waterleaf, Dwarf or Ballhead Waterleaf, Dwarf waterleaf

Synonyms

Hydrophyllum capitatum subvar. laxum Brand
Hydrophyllum capitatum var. capitatum

Flowers

Flower colour: purple (USDA PLANTS Database)

Characteristics

Growth habit: Forb/herb
Lifespan: Perennial
In the US and Canada: Canada: native, Lower 48 states: native

Photos

Photo: Walter Siegmund, CC BY-SA 3.0, from Wikimedia Commons
Photo: Walter Siegmund, CC BY-SA 3.0, from Wikimedia Commons
Photo: Matt Lavin from Bozeman, Montana, USA, CC BY-SA 2.0, from Wikimedia Commons
Photo: Matt Lavin from Bozeman, Montana, USA, CC BY-SA 2.0, from Wikimedia Commons
Photo: Matt Lavin from Bozeman, Montana, USA, CC BY-SA 2.0, from Wikimedia Commons
Photo: Matt Lavin from Bozeman, Montana, USA, CC BY-SA 2.0, from Wikimedia Commons
Photo: Matt Lavin from Bozeman, Montana, USA, CC BY-SA 2.0, from Wikimedia Commons
Photo: Matt Lavin from Bozeman, Montana, USA, CC BY-SA 2.0, from Wikimedia Commons
Photo: Matt Lavin from Bozeman, Montana, USA, CC BY-SA 2.0, from Wikimedia Commons
Photo: brewbooks from near Seattle, USA, CC BY-SA 2.0, from Wikimedia Commons
Photo: brewbooks from near Seattle, USA, CC BY-SA 2.0, from Wikimedia Commons
Photo: Thayne Tuason, CC BY-SA 4.0, from Wikimedia Commons

More in Hydrophyllum

Sources: classification, synonyms from World Flora Online Plant List (2026-06, CC0 1.0); common names, popularity from Wikidata (2026-10-26, CC0 1.0); common names, US characteristics from USDA PLANTS Database (2025-05-29, CC0 1.0). About our plant data.