Tall bugbane (Cimicifuga elata) COSEWIC assessment and status report: chapter 7
Population Sizes and Trends
There are 7 extant, or recently verified (>1950), populations of Cimicifuga elata in Canada in the Chilliwack River valley. Populations are relatively small, ranging from a single plant to 63 plants (Table 1). Two records for this species have not been verified; the Chilliwack River valley, an historic record, is too vague to verify, and the Liumchen Mountain site, which has been extensively converted to young forest, likely represents an extirpated site for C. elata. In addition, only a single plant was observed on Cheam Mountain, also an area extensively clearcut several years ago (Table 1); the first observation at this site reported several plants in a clearcut. Cimicifuga elata is not known to occur in dense populations, but rather, is only sparsely distributed over a limited.
| # | Location | Year | Collector | Number of Plants/area |
|---|---|---|---|---|
| 1 | Chilliwack River | 1901 | Macoun |
unknown
|
| 2 | Liumchen Mt.[1] | 1957 | Beamish |
unknown
|
| 3 | Vedder Mt., NW slope, Parmenter Road junction | 1997 | Penny & Hartwell |
12 /0.1
ha.
|
| 4 | Vedder Mt., N slope | 1997 | Fontaine & Hartwell |
29 /0.5
ha.
|
| 5 | Vedder Mt., NE end, above N end of Cultus Lake | 1996 | Douglas & Penny |
54 /5-6
ha.
|
| 6 | Vedder Mt., SE slope, above S end of Cultus Lake | 1997 | Fontaine & Hartwell |
63 /4
ha.
|
| 7 | Vedder Mt., SW slope | 1988 | Scagel |
unknown
|
| 8 | Elk Mt. | 1997 | Penny & Hartwell |
15 /0.25
ha.
|
| 9 | Tamihi Creek, E of | 1997 | Penny & Hartwell |
7 /0.1
ha.
|
| 10 | Cheam Mt./Chipmunk Creek | 1997 | Fontaine & Hartwell |
1
|
[1] Cimicifuga elata has likely been extirpated from this site.
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