familyRosaceae
subfamilyRosaceae subfam. Dryadoideae
tribeRosaceae tribe Dryadeae
genusDryas
speciesDryas integrifolia
subspeciesDryas integrifolia subsp. integrifolia

Dryas integrifolia subsp. integrifolia

Joshua C. Springer, Bruce D. Parfitt†
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.
Please click on the illustration for a higher resolution version.
Illustrator: Marjorie C. Leggitt

Copyright: Flora of North America Association

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.

"thin" is not a number.

... more about "Dryas integrifolia subsp. integrifolia"
RDF feed
2n chromosome quantity
18 +
Abaxial surface pubescence
slightly hairy +  and tomentose +
Achene arrangement
aggregated +
Achene quantity
20 (40) +
Achene some measurement
0.8mm +  and 3.5mm +
Adaxial surface pubescence
hairy +  and glabrous +
Androecium position
perigynous +
Anther dehiscence
dehiscent +
Apex shape
acute +
Author
Joshua C. Springer +  and Bruce D. Parfitt† +
Authority
Vahl +
Bark coloration
blackish +, reddish +  and brown +
Bark height or length or size
short +
Basal leaf architecture
compound +  and simple +
Basal leaf arrangement
opposite +  and alternate +
Basal leaflet atypical quantity
1 (2) +
Basal leaflet quantity
1 +
Base shape
cordate +  and truncate +
Blade architecture or arrangement or shape or vernation
plicate +
Blade atypical some measurement
3.9 cm39 mm <br />0.039 m <br /> (4.6 cm46 mm <br />0.046 m <br />) +
Blade relief
smooth +  and rugose +
Blade shape
ovate +, oval +, obovate +, oblongelliptic +, oblong +, linear +, lanceolate +  and elliptic +
Blade some measurement
0.2 cm2 mm <br />0.002 m <br /> (3.9 cm39 mm <br />0.039 m <br />) +
Blade texture
coriaceous +
Bract presence
absent +
Bracteole presence
absent +
Branch architecture
stoloniferous +
Branch height or length or size
short +
Branch orientation
horizontal +
Branch pubescence
glabrous +
Carpel architecture
sessile +
Carpel fusion
free +  and distinct +
Carpel quantity
60 (150) +
Caudex length or size
long +
Caudex texture
woody +
Distribution
Greenland +, Alta. +, B.C. +, Man. +, Nfld. and Labr. +, N.W.T. +, Nunavut +, Ont. +, Que. +, Yukon +, Alaska +  and e Asia (Russian Far East) +
Drupe arrangement
not +  and aggregated +
Drupelet arrangement
aggregated +
Elevation
0–2600 m +
Epicalyx bractlet presence
absent +
Exterior pubescence
stipitate-glandular +  and villous +
Filament pubescence
glabrous +
Flower architecture or arrangement or growth form
solitary +
Flower diameter
1.3 cm13 mm <br />0.013 m <br /> (2.9 cm29 mm <br />0.029 m <br />) +
Flower orientation
erect +
Flower reproduction
unisexual +  and bisexual +
Follicle arrangement
not +  and aggregated +
Fruit architecture or pubescence or relief
smooth +
Fruit shape
linear +  and lanceolate +
Fruit some measurement
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
Fruits achene arrangement
aggregated +
Glomerule arrangement
fascicles +
Habitat
Tundra, heathlands, rocky mountain slopes, grasslands, sandy ridges and beaches, mesic and dry areas, solifluction soil +
Hair coloration
white +
Hair height or length or size
short +
Hair presence
absent +
Hair quantity
many +
Hypanthium duration
persistent +
Hypanthium shape
saucer--shaped +
Hypanthium some measurement
0.3 cm3 mm <br />0.003 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Illustration
Present +
Illustration copyright
Flora of North America Association +
Illustrator
Marjorie C. Leggitt +
Inflorescence position
axillary +
Inflorescence position or structure subtype
terminal +
Integument architecture
crassinucellate +
Integument quantity
2 +
Leaf-blade length
0.2 cm2 mm <br />0.002 m <br /> (3.8 cm38 mm <br />0.038 m <br />) +
Leaf-blade shape
linear;narrowly ovate +
Leaf-blade width
0.5mm;11mm +
Leaf architecture
simple +
Leaf arrangement
alternate +
Leaf duration
persistent +
Leaf position
cauline +
Long-shoot presence
absent +
Margin architecture or shape
dentate +  and serrate +
Margin prominence or shape
flat +
Margin shape
crenate +, entire +  and revolute +
Margin shape or vernation
revolute +
Nectar disc presence
absent +
Number of lower taxa
0 +
Nutlet arrangement
aggregated +
Ovary position
inferior +  and superior +
Ovule arrangement
clustered +, biseriate +  and superposed +
Ovule atypical quantity
2 (5) +
Ovule position
basal +
Ovule quantity
1 +
Pedicel presence
absent +
Peduncle some measurement
1 cm10 mm <br />0.01 m <br /> (15 cm150 mm <br />0.15 m <br />) +
Perianth position
perigynous +
Petal atypical quantity
8 (?) +  and 9 (?) +
Petal coloration
yellow +, cream +  and white +
Petal duration
persistent +  and deciduous +
Petal fusion
free +  and distinct +
Petal length
9mm;14mm +
Petal orientation
spreading +
Petal quantity
8 +
Petal shape
ovate;obovate oblanceolate or ovoid +
Petal width
0.5 cm5 mm <br />0.005 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
Petiole presence
absent +
Phenology
Flowering Jun–Aug. +
Pistil atypical quantity
250 (450) +
Pistil fusion
adnate +, free +, connate +  and distinct +
Pistil quantity
1;250 +
Publication title
Skr. Naturhist.-Selsk. +
Publication year
1798 +
Reference
None +
Seed architecture
not arillate +
Seed atypical quantity
2 (12) +
Seed quantity
2;1 +
Sepal atypical quantity
5 (10) +
Sepal duration
persistent +
Sepal fusion
free +  and distinct +
Sepal length
? (?) +
Sepal orientation
erect-ascending +, ascending +  and spreading +
Sepal quantity
8;10 +
Sepal shape
linear-lanceolate +
Sepal width
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
Source xml
https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V9/V9 543.xml +
Special status
Illustrated +
Stamen atypical quantity
130 (220) +
Stamen fusion
free +  and distinct +
Stamen height or length or size
shorter +
Stamen quantity
50;130 +
Stem architecture
rooting +  and branched +
Stigma architecture or shape
capitate +
Stigma position
lateral +
Stipitate-gland presence
absent +
Stipule architecture or shape
pinnate +
Stipule duration
persistent +
Stipule fusion
adnate +  and free +
Stipule presence
absent +
Stipule shape
lanceolate +
Style duration
persistent +
Style fusion
distinct +
Style position
basal +, lateral +, subterminal +  and terminal +
Style position or structure subtype
terminal +
Style shape
elongate +
Style some measurement
0.8 cm8 mm <br />0.008 m <br /> (2.9 cm29 mm <br />0.029 m <br />) +
Surface architecture or pubescence or relief
smooth +
Surface relief
rugulose +
Synonyms
Dryas chamissonis +, D. integrifolia var. canescens +, D. integrifolia subsp. chamissonis +  and D. integrifolia var. subintegrifolia +
Taxon family
Rosaceae +
Taxon name
Dryas integrifolia subsp. integrifolia +
Taxon parent
Dryas integrifolia +
Taxon rank
subspecies +
Torus development
developed +
Torus presence
absent +
Torus prominence
inconspicuous +
Torus shape
hemispheric +
Volume
Volume 9 +
Whole organism architecture
scapose +
Whole organism arrangement or pubescence
tufted +
Whole organism growth form
plant +
Whole organism some measurement
3cm (14cm) +
X chromosome quantity
9 +