Centaurea maculosa (C. biebersteinii)
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[edit] Spotted Knapweed
Centaurea stoebe L. ssp. micranthos (Gulger) Hayek ( C. maculosa auct. non Lam., C. biebersteinii DC )- Moss, Flora of Alberta – Rare
- Global Invasive Species Database – Yes[1]
- NatureServe Rank – High
- Haber, Upland – Minor
- Haber, Wetland – No
- CWF, Status & Invasive Range – Potential, BC, SK, AB, MB, ON, QC, NF & Northern NWT, Yukon
- Alberta Revegetation Guidelines – No
- The Nature Conservancy – Yes, w/ ESA
- CBCN – Potential
- AB Weed – Prohibited noxious
[edit] Remarks
Rare, ISSG for most of Canada, AB included. In sagebrush steppe (A. tridentata), post-fire soil water increases favour Knapweed which once established is able to draw moisture from greater depths and permanently reduce soil moisture below levels normal prior to infestation.
[edit] References
Roché C.T., and B.F. Roché Jr. 2000. Identification of Knapweeds and Starthistles in the Pacific Northwest: PNW432. Pacific Northwest Extension Publication. 22 pp. [2]
Alberta Invasive Plant Council factsheet: https://www.invasiveplants.ab.ca/Downloads/FS-SpottedKnapweed.pdf
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