A second annotated checklist of vascular plants in Wells Gray Provincial Park and vicinity, British Columbia, Canada Version 1: April, 2011 Curtis R. Björk1 and Trevor Goward2 ENLICHENED CONSULTING LTD. Box 131, Clearwater, BC, V0E 1N0, Canada
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[email protected] Vascular Plants in Wells Gray SUMMARY Wells Gray Provincial Park is a vast wilderness preserve situated in the mountains and highlands of south-central British Columbia. The first major floristic study of the vascular plants of Wells Gray and its vicinity was published in 1965 by Leena Hämet-Ahti, who documented 550 taxa, including a first Canadian record of Carex praeceptorium. The present study contributes nearly 500 additional taxa documented by us between 1976 and 2010 in connection with our personal explorations of the Clearwater Valley. The vascular flora of Wells Gray Park and vicinity now stands at 1046 taxa, including 881 native species and 165 species introduced from Eurasia and other portions of British Columbia. Wells Gray Park is notable both for the presence of numerous taxa (45) at or near the northern limits of their range, as well as for an unexpectedly high number of taxa (43) accorded conservation status by the British Columbia Conservation Data Centre. Antennaria corymbosa has its only known Canadian locality within Wells Gray, while five additional species reported here are known in Canada from fewer than six localities. About a dozen unknown, possibly undescribed taxa have also been detected. Botanical inventory has thus far been confined to the southern portions of Wells Gray. Future studies in northern half of the park will certainly greatly increase our knowledge of the biological diversity safeguarded in this magnificent wilderness preserve.