• NSF NEON | Open Data to Understand our Ecosystems
  • Biorepository Data Portal

  • Home
  • Search
    • Sample search
    • Map search
    • Dynamic Species List
    • Taxonomic Explorer
  • Images
    • Image Browser
    • Image Search
  • Datasets
    • Research Datasets and Special Collections
    • Carabidae Checklists with Keys
    • Checklist: Research Sites - Invertebrates
    • Checklist: Research Sites - Plants
    • Checklist: Research Sites - Vertebrates
  • Sample Use
    • Sample Use Policy
    • Sample Request
    • Sample Archival Request
    • Dataset Publishing
  • How to Cite
  • Additional Information
    • Tutorials and Help
    • Biorepository Staff
    • About NEON
    • NEON Data Portal
    • ASU Biocollections
    • About Symbiota
  • Getting Started
Login New Account Sitemap
Boechera lignifera (A. Nelson) W.A. Weber  

No occurrences found

Family: Brassicaceae
desert rockcress
[Arabis lignifera A. Nelson]
Images
not available
  • FNA
  • Resources
Ihsan A. Al-Shehbaz, Michael D. Windham in Flora of North America (vol. 7)
Perennials; short- to long-lived; apomictic or sexual; caudex usually woody. Stems usually 2-5 per caudex branch, arising laterally proximal to sterile shoots, often elevated on woody base, 1.2-4(-5) dm, densely pubescent proximally, trichomes short-stalked, 4-7-rayed, 0.1-0.3 mm, sparsely pubescent or glabrous distally. Basal leaves: blade narrowly oblanceolate, 2-5(-8) mm wide, margins entire, rarely ciliate near petiole base, trichomes (simple or spurred), to 1 mm, surfaces densely pubescent, trichomes short-stalked, 3-7-rayed, 0.05-0.3 mm. Cauline leaves: 4-12(-17), rarely concealing stem proximally; blade auricles 0.5-2 mm, surfaces of distalmost leaves sparsely pubescent. Racemes 6-15(-25)-flowered, usually unbranched. Fruiting pedicels slightly descending, gently recurved, 5-16 mm, glabrous or sparsely pubescent, trichomes appressed, branched. Flowers divaricate-ascending at anthesis; sepals pubescent; petals whitish (often aging pale lavender), 5-7 × 1-1.5 mm, glabrous; pollen ellipsoid or spheroid. Fruits widely pendent, not appressed to rachis, not secund, usually curved, edges parallel, 2.5-5.6 cm × 1.2-2 mm; valves glabrous; ovules 48-74 per ovary; style 0.1-0.2 mm. Seeds uniseriate, 1-1.3 × 0.8-1 mm; wing often continuous, 0.1-0.15 mm wide. 2n = 14. Flowering Apr-May. Rocky slopes and sandy soil in sagebrush and pinyon-juniper woodlands; 1700-2300 m; Ariz., Colo., Idaho, N.Mex., Utah, Wyo. Boechera lignifera is commonly found on stabilized sand dunes. The related B. cobrensis often is found in similar habitats, and the two species can be difficult to distinguish where their ranges overlap in Idaho and Wyoming. It is possible that B. cobrensis was involved in the origin of some apomictic populations currently assigned to B. lignifera.

Click to Display
0 Total Images
NSF NEON | Open Data to Understand our Ecosystems The National Ecological Observatory Network is a major facility fully funded by the National Science Foundation. Any opinions, findings and conclusions or recommendations expressed in this material do not necessarily reflect the views of the National Science Foundation.