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

V9 543-distribution-map.jpg

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.
slightly hairy +  and tomentose +
0.8mm +  and 3.5mm +
hairy +  and glabrous +
Joshua C. Springer +  and Bruce D. Parfitt† +
blackish +, reddish +  and brown +
compound +  and simple +
opposite +  and alternate +
cordate +  and truncate +
3.9 cm39 mm <br />0.039 m <br /> (4.6 cm46 mm <br />0.046 m <br />) +
smooth +  and rugose +
ovate +, oval +, obovate +, oblongelliptic +, oblong +, linear +, lanceolate +  and elliptic +
0.2 cm2 mm <br />0.002 m <br /> (3.9 cm39 mm <br />0.039 m <br />) +
stoloniferous +
free +  and distinct +
Greenland +, Alta. +, B.C. +, Man. +, Nfld. and Labr. +, N.W.T. +, Nunavut +, Ont. +, Que. +, Yukon +, Alaska +  and e Asia (Russian Far East) +
not +  and aggregated +
0–2600 m +
stipitate-glandular +  and villous +
1.3 cm13 mm <br />0.013 m <br /> (2.9 cm29 mm <br />0.029 m <br />) +
unisexual +  and bisexual +
not +  and aggregated +
linear +  and lanceolate +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
Tundra, heathlands, rocky mountain slopes, grasslands, sandy ridges and beaches, mesic and dry areas, solifluction soil +
0.3 cm3 mm <br />0.003 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
crassinucellate +
0.2 cm2 mm <br />0.002 m <br /> (3.8 cm38 mm <br />0.038 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
persistent +
dentate +  and serrate +
crenate +, entire +  and revolute +
inferior +  and superior +
clustered +, biseriate +  and superposed +
1 cm10 mm <br />0.01 m <br /> (15 cm150 mm <br />0.15 m <br />) +
8 (?) +  and 9 (?) +
Yellow (?) +, Cream (?) +  and White (?) +
persistent +  and deciduous +
free +  and distinct +
0.9 cm9 mm <br />0.009 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
Flowering Jun–Aug. +
adnate +, free +, connate +  and distinct +
Skr. Naturhist.-Selsk. +
not arillate +
persistent +
free +  and distinct +
erect-ascending +, ascending +  and spreading +
linear-lanceolate +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
Illustrated +
free +  and distinct +
rooting +  and branched +
adnate +  and free +
persistent +
distinct +
basal +, lateral +, subterminal +  and terminal +
elongate +
0.8 cm8 mm <br />0.008 m <br /> (2.9 cm29 mm <br />0.029 m <br />) +
Dryas chamissonis +, D. integrifolia var. canescens +, D. integrifolia subsp. chamissonis +  and D. integrifolia var. subintegrifolia +
Dryas integrifolia subsp. integrifolia +
Dryas integrifolia +
subspecies +
inconspicuous +
hemispheric +