familyRosaceae
subfamilyRosaceae subfam. Rosoideae
tribeRosaceae tribe Potentilleae
genusPotentilla
sectionPotentilla sect. Niveae
speciesPotentilla arenosa
subspeciesPotentilla arenosa subsp. arenosa

Potentilla arenosa subsp. arenosa

Reidar Elven, David F. Murray, Barbara Ertter
Treatment appears in FNA Volume 9. Treatment on page 200. Mentioned on page 201, 210.

Petioles with both long verrucose hairs and a lower layer of common to abundant short and/or stiff crisped hairs. 2n = 28; 42, 49, 56, 70 (Asia).


Phenology: Flowering spring–summer.
Habitat: Well-drained gravel, ridge tops, cliffs, dry soil banks, dry tundra
Elevation: 0–1400 m

Distribution

V9 302-distribution-map.jpg

Greenland, Alta., B.C., Man., N.W.T., Nunavut, Sask., Yukon, Alaska, Asia (Siberia)

Discussion

Plants of subsp. arenosa from Alaska and Yukon tend to be larger, with more open inflorescences and more distinctly petiolulate central leaflets, than plants in north-central Canada. Some collections from the range of Potentilla furcata (sect. Rubricaules) have red glands in the inflorescence, suggesting introgression between P. arenosa and P. furcata. Reported occurrences in Alberta and Saskatchewan (and the upper altitudinal limit given here) might actually be P. hookeriana as now circumscribed.

Selected References

None.

Lower Taxa

None.

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... more about "Potentilla arenosa subsp. arenosa"
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2n chromosome quantity
28 +
Abaxial gland coloration
reddish +, yellowish white +, gray +  and white +
Abaxial gland density
dense +
Abaxial gland presence
absent +
Abaxial gland shape
cottony-crisped +
Abaxial hair coloration
reddish +, yellowish white +, gray +  and white +
Abaxial hair density
dense +
Abaxial hair presence
absent +
Abaxial hair shape
cottony-crisped +
Abaxial leaflet coloration
white +  and gray +
Abaxial leaflet density
dense +
Abaxial leaflet presence
absent +
Abaxial leaflet shape
cottony-crisped +
Achene arrangement
aggregated +
Achene relief
rugose +  and smooth +
Achene some measurement
1.1 +
Adaxial leaflet coloration
grayish green +  and green +
Adaxial leaflet pubescence
not glaucous +
And/or; and/or vestiture coloration
red +
And/or; and/or vestiture quantity
Sparse (Common) +
And/or height or length or size
short +
And/or length or size
long +
And/or pubescence
cottony +
And/or shape
crisped +
Androecium position
perigynous +
Anther dehiscence
dehiscent +
Anther some measurement
0.4 cm4 mm <br />0.004 m <br /> (?) +
Apex shape
acute +
Apical hair presence
absent +
Author
Reidar Elven +, David F. Murray +  and Barbara Ertter +
Authority
(Turczaninow) Juzepczuk in V. L. Komarov et al. +
Basal leaf architecture
compound +  and simple +
Basal leaf arrangement
2-ranked +
Basal leaf atypical some measurement
12 cm120 mm <br />0.12 m <br /> (20 cm200 mm <br />0.2 m <br />) +
Basal leaf some measurement
1.5 cm15 mm <br />0.015 m <br /> (12 cm120 mm <br />0.12 m <br />) +
Base shape
cuneate +
Basionyms
Potentilla nivea var. arenosa +
Blade architecture
foliaceous +
Blade atypical some measurement
25 cm250 mm <br />0.25 m <br /> (30 cm300 mm <br />0.3 m <br />) +
Blade shape
less cordate or reniform +  and narrowly elliptic +
Blade some measurement
0.5 cm5 mm <br />0.005 m <br /> (25 cm250 mm <br />0.25 m <br />) +
Blade texture
coriaceous +
Bract presence
absent +
Bract size
reduced +
Bracteole presence
absent +
Carpel atypical quantity
260 (450) +
Carpel fusion
free +  and distinct +
Carpel pubescence
hairy +  and glabrous +
Carpel quantity
28 (40) +
Caudex branch architecture
not sheathed +
Caudex branch shape
not columnar +
Caudex branch width
thick +
Cauline leaf atypical quantity
0 (1) +
Cauline leaf quantity
1 (2) +
Central leaflet architecture
petiolulate +
Central leaflet atypical length
3.5 cm35 mm <br />0.035 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
Central leaflet atypical width
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Central leaflet length
1 cm10 mm <br />0.01 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
Central leaflet shape
obovate +
Central leaflet width
0.5 cm5 mm <br />0.005 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Distal leaflet quantity
1/4 (3/4) +
Distal leaflet shape
incised +
Distalmost leaflet position
lateral +
Distribution
Greenland +, Alta. +, B.C. +, Man. +, N.W.T. +, Nunavut +, Sask. +, Yukon +, Alaska +  and Asia (Siberia) +
Drupe arrangement
not +  and aggregated +
Drupelet arrangement
aggregated +
Elevation
0–1400 m +
Epicalyx bractlet atypical length
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Epicalyx bractlet atypical quantity
5 (10) +
Epicalyx bractlet atypical width
0.12 cm1.2 mm <br />0.0012 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Epicalyx bractlet length
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Epicalyx bractlet presence
absent +
Epicalyx bractlet quantity
1/4 +  and 1/2 +
Epicalyx bractlet shape
linear-lanceolate +  and lanceolate-elliptic +
Epicalyx bractlet width
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
Filament some measurement
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
Flower architecture
5-merous +
Flower diameter
0.8 cm8 mm <br />0.008 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Flower reproduction
unisexual +  and bisexual +
Follicle arrangement
not +  and aggregated +
Fruit duration
deciduous +
Fruit pubescence
on style scar +, hairy +  and glabrous +
Fruit quantity
1;260 +
Fruit shape
ovoid +
Fruit some measurement
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.26 cm2.6 mm <br />0.0026 m <br />) +
Fruits achene arrangement
aggregated +
Gland height or length or size
short +
Gland length or size
long +
Gland presence
absent +
Gland pubescence
cottony +
Gland quantity
sparse +
Gland shape
crisped +
Glomerule arrangement
fascicles +
Habitat
Well-drained gravel, ridge tops, cliffs, dry soil banks, dry tundra +
Hair architecture
stoloniferous +  and short-rhizomatous +
Hair architecture or function or pubescence
glandular +
Hair atypical some measurement
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
Hair course
straight +
Hair density
dense +
Hair fixation or orientation
appressed +
Hair fragility
stiff +
Hair height or length or size
short +
Hair length or size
long +
Hair orientation
spreading +  and more or less ascending +
Hair presence
absent +
Hair pubescence
cottony +
Hair pubescence or texture
soft +
Hair quantity
common +  and abundant +
Hair relief
verrucose +
Hair shape
crisped +
Hair some measurement
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
Hypanthium atypical length
0.25 cm2.5 mm <br />0.0025 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Hypanthium atypical width
0.7 cm7 mm <br />0.007 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Hypanthium diameter
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Hypanthium duration
persistent +
Hypanthium length
0.5mm;2.5mm +
Hypanthium shape
turbinate +, patelliform +  and cupulate +
Hypanthium texture
fleshy +
Hypanthium width
2mm;7mm +
Illustration copyright
Flora of North America Association +
Illustrator
Marjorie C. Leggitt +
Inflorescence architecture
1-7(-15)-flowered +
Inflorescence position
axillary +
Inflorescence position or structure subtype
terminal +
Integument architecture
crassinucellate +
Integument quantity
2 +
Leaf architecture
bipinnate +, odd-pinnate +, subpalmate +, palmate +  and ternate +
Leaf arrangement
opposite +  and alternate +
Leaf atypical quantity
0 (1) +
Leaf condition
marcescent +
Leaf development
well-developed +
Leaf duration
persistent +
Leaf position
cauline +  and basal +
Leaf quantity
1 (9) +
Leaf season
winter +
Leaf size
reduced +
Leaflet arrangement
separate +  and more or less overlapping +
Leaflet atypical quantity
3 (5) +
Leaflet position or structure subtype
terminal +
Leaflet quantity
3 (?) +
Leaflet shape
obtriangular +, suborbiculate +, elliptic +  and obovate +
Lobe shape
linear +  and oblanceolate +
Margin architecture
palmate +  and pinnate +
Margin architecture or shape
entire +
Margin position or shape
distal +
Margin prominence or shape
flat +
Margin quantity
1/2 (?) +  and 3/4 (?) +
Margin shape
incised +
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 atypical some measurement
6 cm60 mm <br />0.06 m <br /> (10 cm100 mm <br />0.1 m <br />) +
Pedicel course
straight +
Pedicel orientation
recurved +
Pedicel presence
absent +
Pedicel some measurement
0 cm0 mm <br />0 m <br /> (6 cm60 mm <br />0.06 m <br />) +
Perianth position
perigynous +
Petal arrangement or shape
elliptic +
Petal atypical length
0.7 cm7 mm <br />0.007 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Petal atypical quantity
5 (?) +  and 10 (?) +
Petal atypical some measurement
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Petal atypical width
0.7 cm7 mm <br />0.007 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
Petal coloration
pale-yellow +  and yellow +
Petal fusion
free +  and distinct +
Petal length
4mm;7mm +
Petal length or size
more or less longer +
Petal quantity
5 +
Petal shape
obcordate +
Petal some measurement
0.4 cm4 mm <br />0.004 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Petal width
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Petiole atypical some measurement
7 cm70 mm <br />0.07 m <br /> (15 cm150 mm <br />0.15 m <br />) +
Petiole presence
absent +
Petiole quantity
70 +, 56 +  and 49 +
Petiole some measurement
1 cm10 mm <br />0.01 m <br /> (7 cm70 mm <br />0.07 m <br />) +
Petiolule some measurement
0 cm0 mm <br />0 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Phenology
Flowering spring–summer. +
Pistil atypical quantity
250 (450) +
Pistil fusion
adnate +, free +, connate +  and distinct +
Pistil quantity
1;250 +
Primary leaf architecture
palmate +  and ternate +
Primary leaf atypical some measurement
12 cm120 mm <br />0.12 m <br /> (20 cm200 mm <br />0.2 m <br />) +
Primary leaf some measurement
1 cm10 mm <br />0.01 m <br /> (12 cm120 mm <br />0.12 m <br />) +
Proximal pedicel length or size
often longer +
Publication title
in V. L. Komarov et al., Fl. URSS +
Publication year
1941 +
Red-gland presence
absent +
Red-gland prominence
inconspicuous +
Red-gland quantity
sparse +
Reference
None +
Seed architecture
not arillate +
Seed atypical quantity
2 (12) +
Seed quantity
2;1 +
Sepal atypical quantity
5 (10) +
Sepal atypical some measurement
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Sepal duration
persistent +
Sepal fusion
free +  and distinct +
Sepal orientation
erect +  and spreading +
Sepal quantity
5 +
Sepal shape
lanceolate +  and broadly ovate or deltate +
Sepal some measurement
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Source xml
https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V9/V9 302.xml +
Stamen atypical quantity
20 (30) +
Stamen fusion
free +  and distinct +
Stamen height or length or size
shorter +
Stamen quantity
15;30 +
Stem architecture
not rooting +
Stem coloration
reddish +  and green +
Stem orientation
ascending +  and erect +
Stem quantity
1 +  and many +
Stem shape
not flagelliform +
Stigma architecture or shape
capitate +
Stipule architecture
palmate +  and pinnate +
Stipule duration
persistent +
Stipule fusion
adnate +
Stipule presence
absent +
Stipule shape
linear;ovate +
Style architecture
jointed +
Style atypical some measurement
0.12 cm1.2 mm <br />0.0012 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Style character
length +
Style duration
deciduous +
Style fusion
distinct +
Style position
proximal +  and subapical +
Style quantity
not;1/3;1/2 +
Style shape
papillate-swollen +  and conic-columnar +
Style size or width
rough-thickened +
Style some measurement
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
Surface prominence
obscured +
Taproot size or width
not fleshy-thickened +
Taxon family
Rosaceae +
Taxon name
Potentilla arenosa subsp. arenosa +
Taxon parent
Potentilla arenosa +
Taxon rank
subspecies +
Tooth arrangement
less approximate;distant +
Tooth atypical quantity
4 (6) +
Tooth quantity
3 (?) +  and 4 (?) +
Torus development
developed +
Torus presence
absent +
Torus prominence
inconspicuous +
Torus shape
conic +
Torus size
enlarged +
Torus texture
fleshy +
Volume
Volume 9 +
Whole-organism architecture
not stoloniferous +
Whole-organism arrangement or pubescence
tufted +
Whole-organism duration
perennial +
Whole-organism growth form
cushion-forming +
Whole organism architecture
unarmed +
Whole organism arrangement
rosetted +
Whole organism arrangement or pubescence
tufted +
Whole organism duration
biennial +, annual +  and perennial +
Whole organism growth form
plant +
Whole organism some measurement
0.1dm (7dm) +
X chromosome atypical quantity
8 +
X chromosome quantity
7 +