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Trifolium fucatum; Serpentine Clover   

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Trifolium fucatum
Trifolium fucatum
Serpentine Clover
Photographer: Aaron Schusteff

ID: 0000 0000 1215 2384 (2015-12-18)

Copyright © 2015 Aaron Schusteff

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  • date of photo  Apr 16, 2015
  • location   Parkfield Grade (Fresno County, California, US)
  • family Fabaceae
  • notes   Flower heads of Trifolium 'ultramaficum', growing in serpentine-derived (i.e. ultramafic) soil on an east-facing roadcut a few miles north of the Parkfield Grade summit. Dark spots on the tips of the keel & wings are barely visible here, as is an interesting leaf pattern.

    Using the Jepson eFlora Key to Trifolium to ID these plants, I arrived at Trifolium fucatum. However, Santa Cruz, CA, naturalist and Trifolium worker Randall Morgan...who has been doing thoughtful research and meticulous observation & analysis of the genus for many years: incorporating extensive field work; countless growing experiments; and (with a collaborator) correlation with molecular data...has come to recognize that the traditional 'species' T. fucatum comprises a complex of distinct taxa which he has worked to more coherently recircumscribe. The constituent of this complex seen here he refers to as T. ultramficum, and this is his type locality for that taxon.

    We visited another locality for T. ultramaficum on serpentine earlier in the day along highway CA-198, about 6 miles east of junction with CA-25 in Monterey County. Two other records for the taxon from Santa Barbara County (which I believe are also on ultramafic substrates) appear in the UC Riverside Herbarium records here and here.

    Since the name T. ultramaficum has not yet been formally published, I'm posting this under the closest currently valid name, T. fucatum.

  • photo category: Plant - annual/perennial

  • common names   B Serpentine Clover (photographer)
  • Look for Jepson Manual treatments, maps (University & Jepson Herbaria)
  • View Calflora record for Trifolium fucatum
  • View all photos in CalPhotos of Trifolium fucatum
  • Check Google Images for Trifolium fucatum

  • The photographer's identification Trifolium fucatum has not been reviewed. Click here to review or comment on the identification.

    Using this photo   The thumbnail photo (128x192 pixels) on this page may be freely used for personal or academic purposes without prior permission under the Fair Use provisions of US copyright law as long as the photo is clearly credited with © 2015 Aaron Schusteff. For other uses, or if you have questions, contact Aaron Schusteff arbonius2[AT] (Replace the [AT] with the @ symbol before sending an email.)


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