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Trifolium olivaceum
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Photographer: Jennifer Buck
ID: 0000 0000 0611 0333 (2011-06-06)Copyright © 2011 Jennifer Buck
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Reviewers' comments about this photo (review or add another comment)
| 1. | Reviewed by Randall Morgan Nov 15, 2012 |
| Action: changed name from "Trifolium albopurpureum" to "Trifolium olivaceum
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| Reviewer's comments: | | | | "a very significant find. This matches the description of a once-"abundant" species currently believed to be extinct. Originally described from valley grasslands in Solano County and apparently never extended much beyond that. The name has been misapplied to other non-showy members of the T. albop. complex in the SCoR etc. but this is the "real" olivaceum. A related species called T. columbinum occupies other parts of the Sacto Valley, esp. east side, distinguished by rounder heads with conspic. long silvery-gray hair and more conspic. fls. T. oliv. has greenish heads, less hairy and with extra-long (to10-11 mm) reddish-tipped calyx lobes. It also has the shortest fls relative to calyx of any clover I know. In this way it is the opposite extreme from its relative T. amoenum, which coincidentally was also believed extinct until recently. I have searched for T. o. for years, but only inSolano Co. Hopefully you saw more than the one plant. In any case it is essential that grazing continue, and preferably also some localized surface disturbance to revive any dormant seedbank. Need material for DNA analysis, and seed for increase and gene-banks." |
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Using this photo This photo is in the public domain and may be freely used for any purpose. Please credit the photographer Jennifer Buck.
If you have questions, contact Jennifer Buck jbuck[AT]cnps.org. |
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