Scientific Name: Phlox speciosa ssp. occidentalis
Taxonomy Group: Vascular Plants
Range: British Columbia
Last COSEWIC Assessment: November 2004
Last COSEWIC Designation: Threatened
SARA Status: Schedule 1, Threatened
Image of Showy Phlox
Although there are six Showy Phlox subspecies, the Occidentalis subspecies is the only one that occurs in British Columbia. Therefore, in Canada, Showy Phlox is referred to solely by this name with no reference to the subspecies.
Only a single subspecies of showy phlox, Phlox speciosassp. occidentalis, is known from Canada. The species is therefore referred to simply as Phlox speciosathroughout the report. It is a perennial plant with a somewhat shrubby base. Stems are erect, 15-40 cm tall, rising from a woody taproot. The plant is glandular to glandular-hairy above, and hairy below. The opposite leaves are linear to lance-shaped, to 7 cm long and 1 cm wide. The plant has clusters of flowers at the ends of stems, with leafy bracts. Corollas (joined petals) range from pink to white. The corolla tube (1-1.5 cm long) spreads to five wide lobes (1-1.5 cm long) that are notched at the tip. Calyces (joined sepals) are glandular, with flat, transparent segments between the five green ribs. Styles range from 0.5-2 mm long. (Updated 2017/05/25)
Distribution and Population
Historically, the taxon is known to occur in the Okanagan Valley from Summerland in the north, south to Skaha Lake (formerly Dog Lake), and southwest to the Twin Lakes. Extant and newly discovered populations are concentrated in a cluster around Yellow Lake and Twin Lakes, between the towns of Keremeos and Penticton. The known extent of its range in British Columbia is about 57 km². The area of habitat occupied at the known populations is estimated to be between 0.9-1.4 km². (Updated 2017/05/25)
Phlox speciosa seems to require the following habitat features: a very hot, dry, interior climate; open Pseudotsuga menziesii (Douglas-fir) and/or Pinus ponderosa(ponderosa pine) forests or Artemisia tridentata (big sagebrush) shrub/grasslands; a specific range of elevations (700-1100 m); and cool aspect slopes or level sites. (Updated 2017/05/25)
Little specific information is available on the biology of Phlox speciosa. The plant is a perennial, and reproduces by seed. (Updated 2017/05/25)
A potential threat to Phlox speciosa populations is the lack of protection of natural plant communities throughout the majority of the plant’s range in Canada. Within the current extent of occurrence, 41% of the area is privately owned land, which is particularly vulnerable to changes in land use and development, including range reseeding. Increasing recreational property development represents the most important trend in habitat loss. Canadian populations are also potentially vulnerable given their relatively small area of occupancy. Another potential threat is weed control activities required by the Weed Control Act. Use of marginally specific herbicides that kill broad-leaved plant species would likely kill Phlox speciosa. (Updated 2017/05/25)
Federal ProtectionThe Showy Phlox is protected under the federal Species at Risk Act (SARA). More information about SARA, including how it protects individual species, is available in the Species at Risk Act: A Guide.
Provincial and Territorial Protection
Status of Recovery Planning
Recovery Strategies :
Name Recovery Strategy for the Showy Phlox (Phlox speciosa ssp. occidentalis) in Canada
Status First posting on SAR registry
PLEASE NOTE: Not all COSEWIC reports are currently available on the SARA Public Registry. Most of the reports not yet available are status reports for species assessed by COSEWIC prior to May 2002. Other COSEWIC reports not yet available may include those species assessed as Extinct, Data Deficient or Not at Risk. In the meantime, they are available on request from the COSEWIC Secretariat.
9 record(s) found.
- COSEWIC Status Reports (1 record(s) found.)
- COSEWIC Assessments (1 record(s) found.)
- Response Statements (1 record(s) found.)
- Recovery Strategies (1 record(s) found.)
- Orders (2 record(s) found.)
- COSEWIC Annual Reports (1 record(s) found.)
- Consultation Documents (1 record(s) found.)
- Recovery Document Posting Plans (1 record(s) found.)
COSEWIC Status Reports
COSEWIC Annual Reports
COSEWIC Annual Report - 2005 (2005)2005 Annual Report to the Canadian Endangered Species Conservation Council (CESCC) from the Committee on the Status of Endangered Wildlife in Canada.
Recovery Document Posting Plans
- Date modified: