familyRosaceae
subfamilyRosaceae subfam. Dryadoideae
genusDryas
speciesDryas integrifolia
subspeciesDryas integrifolia subsp. integrifolia
Dryas integrifolia subsp. integrifolia
Illustrated
Synonyms: Dryas chamissonis Sprengel ex Juzepczuk D. integrifolia var. canescens Simmons D. integrifolia subsp. chamissonis (Sprengel ex Juzepczuk) Scoggan D. integrifolia var. subintegrifolia Hultén
Treatment appears in FNA Volume 9. Treatment on page 331.
Leaf blades linear to narrowly ovate, base cordate to truncate, margins usually strongly revolute, entire or crenate to serrate or dentate in proximal 2/3–3/4, apex acute. 2n = 18.
Phenology: Flowering Jun–Aug.
Habitat: Tundra, heathlands, rocky mountain slopes, grasslands, sandy ridges and beaches, mesic and dry areas, solifluction soil
Elevation: 0–2600 m
Distribution
Greenland, Alta., B.C., Man., Nfld. and Labr., N.W.T., Nunavut, Ont., Que., Yukon, Alaska, e Asia (Russian Far East).
Discussion
In some states and provinces, subsp. integrifolia has a limited distribution: central and northeastern Manitoba, northern Lake Superior and the Hudson Bay region of Ontario, and southeastern and northern Quebec.
In Greenland, subsp. integrifolia has widely introgressed with Dryas octopetala.
Dryas ×lewinii Rouleau (D. ×wyssiana Beauverd, name invalid) of Newfoundland is a putative hybrid between subsp. integrifolia and D. drummondii.
Selected References
None.
Lower Taxa
None.
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