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Lobb's Buttercup
Ranunculus lobbii
About Lobb's Buttercup (Ranunculus lobbii) 0 Nurseries Carry This Plant Ranunculus lobbii is a species of buttercup known by the common name Lobb's buttercup, or Lobb's aquatic buttercup. It is native to a few areas in western North America, where it is reported from British Columbia, Oregon, and northern California. It is an aquatic plant, growing in various types of shallow-water habitat, including forest ponds and vernal pools. It is an annual herb producing submerged stems 20 to 80 centimeters long which may float at the surface. The blades of the leaves are tiny and divided into threadlike segments. If any leaves develop on stem parts which are exposed to air they are much different in morphology, developing larger, more robust leaves. Flowers have generally 5 petals which are white in color and about half a centimeter long. Many stamens and pistils fill the center of the flower. The fruit is an achene borne in a spherical cluster.
Plant Description
Plant Type
Plant Type
Annual Herb

0.7 - 2.6 ft tall

Flower Color
Flower Color
Yellow, White

Wildlife Supported

Butterflies & moths hosted ( 1 likely * ) SHOW ALL

Landscaping Information
Full Sun, Part Shade

Natural Setting
Site Type
Site Type
Shallow water, vernal pools

Annual Precipitation: 14.7" - 69.0", Summer Precipitation: 0.21" - 2.01", Coldest Month: 38.8" - 50.7", Hottest Month: 58.1" - 74.3", Humidity: 0.43" - 21.82", Elevation: -1" - 3620"

Alternative Names
Common Names: Lobb's Aquatic 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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