• 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
    • Checklist: Research Sites - Invertebrates
    • Checklist: Research Sites - Plants
    • Checklist: Research Sites - Vertebrates
  • Sample Use
    • Sample Use Policy
    • Sample Request
    • Sample Archival Request
    • Data Usage Policy
  • Additional Information
    • Tutorials and Help
    • Biorepository Staff
    • About NEON
    • NEON Data Portal
    • ASU Biocollections
    • About Symbiota
  • Getting Started
Login New Account Sitemap
Chorizanthe douglasii Benth.  

No occurrences found

Family: Polygonaceae
Douglas' spineflower
Images
not available
  • FNA
  • Resources
James L. Reveal in Flora of North America (vol. 5)
Plants erect, 1-4(-5) × 0.5-3 dm, villous. Leaves basal; petiole 1-3(-6) cm; blade oblanceolate, 0.5-2(-4) × 0.1-0.4(-1) cm, villous. Inflorescences cymose, dichot-omously branched throughout, white to greenish or reddish; bracts usually 2, similar to proximal leaf blades, typically with whorl of 3-5 ca. midstem, short-petiolate, becoming linear and aciculate at distal nodes, acerose, 0.5-2(-3) cm × 1-5(-10) mm, awns absent. Involucres congested in small leafy terminal clusters of 2-4 at nodes of dichotomies, greenish, cylindric, slightly ventricose basally, 3-5 mm, with conspicuous, purple, broad, membranous margins typically extending across sinuses, finely corrugated, hispid at least along ridges, otherwise sparsely pubescent; teeth spreading, equal, (0.7-)1-1.5 mm, awns straight, 0.5-1 mm. Flowers exserted; perianth white to rose, cylindric, 3.5-4(-4.5) mm, slightly pubescent abaxially; tepals connate 2/ 3 their length, monomorphic, obovate, 2-lobed or denticulate apically, infrequently inner whorl entire; stamens 9, slightly exserted; filaments distinct, 3-4 mm, glabrous; anthers pink to red, oblong, 0.5-0.6 mm. Achenes light brown, globose-lenticular, 3.5-4 mm. 2n = 40. Flowering Apr-Jul. Sandy to gravelly flats and slopes, mixed grassland communities, oak and pine woodlands; (200-)300-1600 m; Calif. Chorizanthe douglasii is restricted to the Santa Lucia Mountains and to the San Gabilan and La Panza ranges of west-central California. The species is infrequent but can be locally common. A single collection made in the Santa Cruz Mountains (Rowntree s.n., 16 Jun 1929, CAS) may have been made in Santa Cruz County, but the location is uncertain and no other collection is known from that region.

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.