Element occurrence review and update for five rare plant species

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Indian Valley sedge (<i>Carex aboriginum</i>), MacFarlane's four o-clock (<i>Mirabilis macfarlanei</i>), Mulford's milkvetch (<i>Astragalus mulfordiae</i>), Spalding's silene (<i>Silene spaldingii</i>), and Ute ladies'-tresses (<i>Spiranthes diluvialis</i>) are all rare plants of conservation concern that occur in Idaho. The Idaho Conservation Data Center (IDCDC) manages spatial and tabular data pertaining to rare plant species using element occurrences (EOs). Federal and state agencies rely on the IDCDC Biotics Database (2005) for information to help plan rare plant conservation efforts. The objectives of this project were to apply the following tasks in the IDCDC Biotics Database for Indian Valley sedge, MacFarlane's four o-clock, Mulford's milkvetch, Spalding's silene, and Ute ladies'-tresses: 1) update and review EO specifications and EO rank specifications; 2) update spatial data; 3) delineate EOs using EO specifications; 4) update and review tabular data; and 5) apply EO ranks based on EO rank specifications. Changes to EOs and EO ranks are summarized. Coordination with state and province programs within the NatureServe Network was essential in developing the EO specifications and EO rank specifications. After application of the EO specification and EO rank specifications, the five rare plant species had the following number of EOs and breakdown of EO ranks within Idaho: 1) seven Indian Valley sedge EOs with the following ranks: B=2, C=4, and D=1; 2) nine MacFarlane's four o'clock EOs with the following ranks: B=3, BC=1, C=4, and D=1; 3) 32 Mulford's milkvetch EOs with the following ranks: A=2, B=7, B?=7, BC=2, C=6, C?=4, X=1, and X?=3; 4) 19 Spalding's silene EOs with the following ranks: B=4, BC=1, C=9, C?=1, D=2, F=1, and not ranked=1; and 5) eight Ute ladies'-tresses EOs with the following ranks: A=1, B=2, C=4, and CD=1. Continued coordination with other programs is essential for providing accurate and seamless data about multi-jurisdictional rare plant species. This report establishes a standard for Indian Valley sedge, MacFarlane's four o-clock, Mulford's milkvetch, Spalding's silene, and Ute ladies'-tresses EOs and EO ranks.<br>

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Reference Code: U06COL06IDUS <br>

Full Citation: Colket, B., S. Cooke, G. Crymes, and M. Mancuso. 2006. Element occurrence review and update for five rare plant species. Idaho Conservation Data Center, Idaho Department of Fish and Game, Boise. 45 pp. plus appendices. <br>

Location: PLANT EF: ASTRAGALUS MULFORDIAE; CAREX ABORIGINUM; MIRABILIS MACFARLANEI; SILENE SPALDINGII; SPIRANTHES DILUVIALIS; <br>

Keywords: Indian Valley sedge, Carex aboriginum, MacFarlane's four o-clock, Mirabilis macfarlanei, Mulford's milkvetch, Astragalus mulfordiae, Spalding's silene, Silene spaldingii, Ute ladies'-tresses, Spiranthes diluvialis, Idaho, Idaho Conservation Data Center, IDCDC, Biotics, Element Occurrence, EO, EO rank specification, rank specification <br>

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U06COL06IDUS.pdf