Curveseed butterwort

Quick look

Ceratocephala testiculata is a flowering plant that is native to Eurasia. Common names include bur buttercup and curveseed butterwort. It is very small, usually only about an inch or two tall, but potentially growing to four inches. The flowers are small and dull yellow. The leaves are hairy and somewhat dissected. It produces a cluster of hard, spiny fruits.

• It belongs to the Ranunculaceae family. ^iNaturalist
• USDA PLANTS describes it as an herb (forb) with a annual life cycle. ^{USDA PLANTS}
• USDA PLANTS lists it as introduced in the lower 48 states and records it in 23 states. ^{USDA PLANTS}
• NatureServe lists it as not native to Utah, Idaho and Nevada. ^NatureServe
• In Utah, most iNaturalist sightings of it in flower come in February–April. ^iNaturalist
• In Idaho, most iNaturalist sightings of it in flower come in February–May. ^iNaturalist
• iNaturalist has 946 research-grade sightings of it in Utah, ranking #60 among the 109 flowers on our Utah list. ^iNaturalist
• iNaturalist has 511 research-grade sightings of it in Idaho, ranking #63 among the 109 flowers on our Idaho list. ^iNaturalist
• iNaturalist has 408 research-grade sightings of it in Nevada, ranking #101 among the 110 flowers on our Nevada list. ^iNaturalist