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Clammy Clover
Trifolium obtusiflorum
About Clammy Clover (Trifolium obtusiflorum) 4 Nurseries Carry This Plant Trifolium obtusiflorum is a species of clover known by the common name clammy clover. It is native to California in the Peninsular, Transverse, Sierra Nevada, and the California Coast Ranges and Cascade Range into southwestern Oregon. It grows in moist habitat such as marshes and streambanks, and disturbed areas. Trifolium obtusiflorum is an annual herb growing erect in form. It is hairy, glandular, and sticky in texture. The leaves are made up of sharply toothed, pointed oval leaflets up to 4 centimeters in length. The inflorescence is a head of flowers up to 3 centimeters wide with a base of toothed bracts. Each flower has a calyx of sepals with lobes narrowing into bristles. The flower corolla may be nearly 2 centimeters long and is pink and purple with a white tip.
Plant Description
Plant Type
Plant Type
Annual herb

Wildlife Supported

Butterflies & moths hosted ( 65 likely * ) SHOW ALL

Landscaping Information
Full Sun

Moderate - High


Common uses
Common uses
Bee Gardens

Natural Setting
Site Type
Site Type
Streambanks, moist, disturbed places,

Annual Precipitation: 9.7" - 90.0", Summer Precipitation: 0.15" - 2.66", Coldest Month: 33.2" - 55.3", Hottest Month: 57.6" - 80.8", Humidity: 0.29" - 29.42", Elevation: 7" - 8913"

Alternative Names
Common Names: Creek Clover

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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