Skip to Main Content
Breeding biologies, pollinators, and seed beetles of two prairie-clovers, Dalea ornata and Dalea searlsiae (Fabaceae: Amorpheae), from the Intermountain West, USAAuthor(s): James H. Cane; Melissa Weber; Stephanie Miller
Source: Western North American Naturalist. 72(1): 16-20.
Publication Series: Scientific Journal (JRNL)
Station: Rocky Mountain Research Station
PDF: Download Publication (86.41 KB)
DescriptionTwo prairie-clovers, Dalea ornata (Douglas ex Hook.) Eaton & J. Wright and Dalea searlsiae (A. Gray) Barneby, are perennial forbs found sporadically in the U.S. Intermountain West. Their seed is desirable for use in rangeland restoration. We experimentally characterized the breeding biologies of D. ornata and D. searlsiae in a common garden, surveyed their pollinator guilds, and sampled their seed predators. The 2 Dalea species, being primarily xenogamous, have comparable pollination requirements. For flowers manually pollinated with outcross pollen, an average of 42% of D. ornata flowers and 39% of D. searlsiae flowers yielded plump large seeds filled with endosperm. Both species proved to be self-compatible, but far fewer seeds resulted from either manual pollination with self-pollen (11% seed set for D. ornata and 7% for D. searlsiae) or unassisted autogamy (5% and 6% seed set, respectively). Limited surveys of the prairie-clovers' pollinator guilds in ruderal or cheatgrass-infested habitats revealed sparse visitation solely by wild bees, primarily of the genera Anthidium, Colletes, Bombus, Eucera, and Melissodes. Beetles (Acanthoscelides oregonensis Johnson and Apion amaurum Kissinger) infested seed sampled from 18 of 25 D. ornata populations across a 3-state region. Productive farming of the seed of these prairie-clovers for rangeland restoration in the western United States will require supplementation of bees for pollination and exclusion of seed beetles.
- You may send email to firstname.lastname@example.org to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationCane, James H.; Weber, Melissa; Miller, Stephanie. 2012. Breeding biologies, pollinators, and seed beetles of two prairie-clovers, Dalea ornata and Dalea searlsiae (Fabaceae: Amorpheae), from the Intermountain West, USA. Western North American Naturalist. 72(1): 16-20.
Keywordsprairie-clover, Dalea ornata, Dalea searlsiae
- Searls' Prairie clover (Dalea searlsiae) tolerance to post-emergence herbicide applications
- Plant Guide: Searls' prairie clover (Dalea searlsiae [A. Gray] Barneby)
- Searls’ prairie clover (Dalea searlsiae)
XML: View XML