Urophysa rockii is a perennial flowering plant in the family Ranunculaceae, endemic to Sichuan in China.
Description Urophysa rockii is a perennial herb. It produces approximately ten leaves, sparsely covered in fine downy hairs and measuring in length. The leaf stalks are long. The leaves consist of three oblique fan-shaped leaflets, the side leaflets having two unequal lobes each, and the central leaflet being slightly smaller with three lobes and sometimes a short stalk. The inflorescences usually produce only a single flower on a stalk 4.5–10 mm long. The sepals are blue, oval-shaped and long, with a smooth upper and sparsely downy lower surface. The petals are around 6 mm long, boat-shaped and having a nectar spur around 2 mm long. The stamens are smooth and measure 8–10 mm in length, and the staminodes are lance-shaped and the same length as the petals.
Taxonomy Urophysa rockii was formally described by Oskar Eberhard Ulbrich in the new genus Urophysa in 1929. Although John Hutchinson reclassified it in the genus Semiaquilegia in 1935, it is now accepted as Urophysa.
Distribution and habitat Urophysa rocki is endemic to northern Sichuan province in China, along the upper reaches of the Fu River. It grows in wet places by streams.
Conservation , the species has not been assessed for the IUCN Red List.
Ecology Urophysa rockii flowers from March to April, and fruits in April.
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