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Delicate Buttercup
Ranunculus hebecarpus

About Delicate Buttercup (Ranunculus hebecarpus) Ranunculus hebecarpus is a species of buttercup known by the common name delicate buttercup. It is native to western North America, including several of the western United States and Baja California, where it grows in grassland, woodland, and chaparral habitat. It is an annual herb producing a slender, hairy stem a few centimeters high or up to 30 centimeters tall. The hairy leaves are borne on long petioles. Their blades are deeply lobed or divided into three leaflets, often with toothed or lobed edges. Flowers have 3 to 5 tiny yellow petals just 1 or 2 millimeters long studded on the bulbous nectary; some flowers lack petals. The plant is most easily identified in its fruiting stage, when the infructescence is a spherical cluster of several tiny disc-shaped achenes with compressed, bristly sides.
Plant Description
Plant Type
Annual Herb

Max. Height
1.2 - 11.8 in (3 - 30 cm)

Flower Color

Native Status

Natural Setting
Elevation ?
7' - 6262'

Annual Precip. ?
11.1" - 60.0"

Summer Precip. ?
0.14" - 1.56"

Coldest Month ?
29.7° F - 57.2° F

Hottest Month ?
58.2° F - 79.8° F

Humidity ?
0.47 vpd - 27.29 vpd

Landscaping Information
Nursery Availability
Never or Almost Never Available

Other Names
Common Names
Downy-fruit Buttercup, Downy-fruited Buttercup, Pubescent-fruited Buttercup, Slender Annual Buttercup

Sources include: Wikipedia. All text shown in the "About" section of these pages is available under the Creative Commons Attribution-ShareAlike License. Plant observation data provided by the participants of the California Consortia of Herbaria, Sunset information provided by Jepson Flora Project. Propogation from seed information provided by the Santa Barbara Botanical Garden from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include CalPhotos, Wikimedia Commons, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include Calflora, CNPS Manual of Vegetation Online, Jepson Flora Project, Las Pilitas, Theodore Payne, Tree of Life, The Xerces Society, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from PRISM Climate Group, Oregon State University, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.

Links:   Jepson eFlora Taxon Page  CalPhotos  Wikipedia  Calflora

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