2007 Annual Report 1a.Objectives (from AD-416) Extend pollinator breeding biologies and management to additional native flowering species being considered for revegetation on federal lands in the Intermountain West. 1b.Approach (from AD-416) Characterize the plants' pollinator faunas and identify pollinators with management potential. 3.Progress Report This report documents research conducted under a Reimbursable Agreement between ARS and USFS with funding from the BLM through the GBNPSIP program. Additional details of research can be found in the report for the in-house associated project 5428-21000-010-04R, Pollinator and Seed Predator Studies Great Basin Native Plant Selection and Increase Project.. Native bees and/or honey bees are proving to be beneficial or necessary to pollinate nearly all of the wildflower species considered for Great Basin rehabilitation. The pollinator faunas of many of these candidate plant genera include one or more bee genera with potentially manageable species, especially species of Osmia. A minority of species attract and are pollinated by honey bees or managed alfalfa leaf-cutting bees. We prepared raised, irrigated seed beds for this year=s experimental plantings of Sphaeralcea and Lomatium. We also transplanted greenhouse seedlings of Lomatium triternatum and L. grayii, and transplanted 100 more taproots of Lomatium dissectum. Deer have been excluded with an 8’ perimeter fence that we built. In 2007, we focused our studies of breeding biologies on established plants of 3-yr-old D. searlsiae and Lomatium dissectum growing in our 20' x 20' common garden plots. For both species, autopollination on caged flowers yielded dismal seed production. Hence, pollinators are essential to seed production. Work with globemallows was confounded by hybrid individuals in the seed stocks provided us from USFS stocks. Evaluation of breeding biology data is underway. We are able to increase populations of the native bees O. bruneri, O. lignaria and O. sanrafaelae, even when restricted to foraging at flowers of our target forb species. The last two species are now being managed by us in commercial quantities for future starting populations to distribute to several growers.