Potentilla anserina subsp. groenlandica

Trattinnick

Rosac. Monogr. 4: 13. 1824.

Illustrated
Synonyms: Argentina anserina subsp. egedei (Wormskjold ex Hornemann) Á. Löve & Ritchie A. anserina subsp. groenlandica (Trattinnick) Á. Löve A. egedei Wormskjold ex Hornemann Potentilla anserina subsp. egedei (Wormskjold ex Hornemann) Hiitonen P. egedei P. egedei var. groenlandica (Trattinnick) Polunin
Treatment appears in FNA Volume 9. Treatment on page 130. Mentioned on page 127, 128.

Stems glabrous. Leaves horizontal or ascending, rarely erect, (1–) 2–10 cm, rarely longer; leaflets 2–4 (–5) per side, separate, teeth 2–6 (–10) per side, teeth apex rounded to subacute, surfaces: abaxial with long hairs absent or sparse, on veins, cottony-crisped hairs absent, sometimes sparse to dense, adaxial glabrous. Flowers 0.8–1.5 cm diam.; epicalyx bractlets narrowly to broadly ovate-triangular, shorter than sepals, entire; hypanthium patelliform (wider than deep) in fruit; petals not overlapping, elliptic; carpels 25–60. Achenes without dorsal groove. 2n = 28, 35, 42.


Phenology: Flowering summer.
Habitat: Salt and brackish marshes, clayey and sandy seashores, driftwalls
Elevation: 0 m

Distribution

V9 185-distribution-map.jpg

Greenland, Man., Nfld. and Labr. (Labr.), N.W.T., Nunavut, Ont., Que., Yukon, Alaska, Eurasia

Discussion

The northern arctic plants have glabrous leaves and are compatible with Potentilla egedei. Some of the southern arctic and northern boreal plants in the Atlantic regions have leaves with white-hairy abaxial surfaces, more leaflets, often more pointed teeth, and slightly larger flowers. These are compatible with subsp. groenlandica as originally described. The variation between these extremes is continuous. Both names are based on plants from Greenland, far north of the native range of subsp. anserina, and are probably the same entity. Following the argument by J. Soják (1969) that trinomials by Trattinnick are subspecies, the epithet groenlandica has priority over egedei at this rank.

Selected References

None.

Lower Taxa

None.

"dm" is not declared as a valid unit of measurement for this property.

42 +, 35 +  and 28 +
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
papillate +  and rugose +
green +  and white +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
Reidar Elven +  and David F. Murray +
Trattinnick +
compound +  and simple +
25 cm250 mm <br />0.25 m <br /> (30 cm300 mm <br />0.3 m <br />) +
less cordate or reniform +  and narrowly elliptic +
0.5 cm5 mm <br />0.005 m <br /> (25 cm250 mm <br />0.25 m <br />) +
reduced +
free +  and distinct +
hairy +  and glabrous +
Greenland +, Man. +, Nfld. and Labr. (Labr.) +, N.W.T. +, Nunavut +, Ont. +, Que. +, Yukon +, Alaska +  and Eurasia +
not +  and aggregated +
0.7 cm7 mm <br />0.007 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
ovate-triangular +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
unisexual +  and bisexual +
not +  and aggregated +
deciduous +
on style scar +, hairy +  and glabrous +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.26 cm2.6 mm <br />0.0026 m <br />) +
Salt and brackish marshes, clayey and sandy seashores, driftwalls +
stoloniferous +  and short-rhizomatous +
straight +
sparse +  and dense +
cottony +  and crisped-cottony +
cottony-crisped +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
racemiform open +  and more or less congested +
crassinucellate +
5 cm50 mm <br />0.05 m <br /> (7 cm70 mm <br />0.07 m <br />) +
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (5 cm50 mm <br />0.05 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (2 cm20 mm <br />0.02 m <br />) +
bipinnate +, odd-pinnate +, subpalmate +, palmate +  and ternate +
opposite +  and alternate +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
marcescent +
well-developed +
persistent +
cauline +  and basal +
reduced +
2 cm20 mm <br />0.02 m <br /> (10 cm100 mm <br />0.1 m <br />) +
elliptic +  and obovate +
linear +  and oblanceolate +
palmate +  and pinnate +
1/4 +  and 1/2 +
incised +, flat +  and revolute +
inferior +  and superior +
clustered +, biseriate +  and superposed +
45 cm450 mm <br />0.45 m <br /> (55 cm550 mm <br />0.55 m <br />) +
2 cm20 mm <br />0.02 m <br /> (45 cm450 mm <br />0.45 m <br />) +
not overlapping +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
1 cm10 mm <br />0.01 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
free +  and distinct +
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (1 cm10 mm <br />0.01 m <br />) +
15 cm150 mm <br />0.15 m <br /> (25 cm250 mm <br />0.25 m <br />) +
1 cm10 mm <br />0.01 m <br /> (15 cm150 mm <br />0.15 m <br />) +
Flowering summer. +
adnate +, free +, connate +  and distinct +
50 cm500 mm <br />0.5 m <br /> (75 cm750 mm <br />0.75 m <br />) +
3 cm30 mm <br />0.03 m <br /> (50 cm500 mm <br />0.5 m <br />) +
Rosac. Monogr. +
not arillate +
0.7 cm7 mm <br />0.007 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
persistent +
free +  and distinct +
erect +  and spreading +
lanceolate +  and broadly ovate or deltate +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Illustrated +
free +  and distinct +
reddish +  and green +
(0.5-)1-5+ times basal leaves +
prostrate +  and erect +
1 +  and many +
flagelliform +
palmate +  and pinnate +
deciduous +
distinct +
papillate-swollen +  and columnar-filiform +
rough-thickened +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
Argentina anserina subsp. egedei +, A. anserina subsp. groenlandica +, A. egedei +, Potentilla anserina subsp. egedei +, P. egedei +  and P. egedei var. groenlandica +
not fleshy-thickened +
Potentilla anserina subsp. groenlandica +
Potentilla anserina +
subspecies +
2 +  and 6 +
inconspicuous +
enlarged +
biennial +, annual +  and perennial +
herb +  and matted +