Potentilla uschakovii

Jurtzev

Bot. Zhurn. (Moscow & Leningrad) 73: 1613. 1988.

Treatment appears in FNA Volume 9. Treatment on page 211. Mentioned on page 207, 210.

Caudex branches often sheathed with marcescent whole leaves. Stems ascending to nearly erect, 0.3–1.5 dm. Basal leaves often both ternate and palmate or subpalmate on same plant, 1–5 cm; petiole 0.5–3 cm, long hairs sparse to dense, ± appressed to ascending, (1–) 1.5–2.5 mm, soft to ± weak, smooth, short hairs absent or sparse, crisped (/cottony) hairs sparse to common, glands absent or sparse; leaflets 3–5, proximalmost separated by 0–2 mm, central broadly elliptic to obovate, 0.5–2 × 0.3–1.4 cm, petiolules ± 1 mm, distal 2/3 to nearly whole margin incised 2/3–3/5+ to midvein, teeth (2–) 3–4 per side, 3–5 mm, apical tufts 1–1.5 mm, abaxial surfaces grayish white to white, long hairs common to abundant, cottony (/crisped) hairs dense, short hairs and glands absent or obscured, adaxial grayish green to gray, long hairs abundant, 1–2 mm, soft (grading to cottony), short/crisped/cottony hairs common to abundant, glands sparse to common. Cauline leaves 0–1. Inflorescences 1–3 (–4) -flowered, open, branch angle 20–40°. Pedicels 1–1.5 cm, proximal to 3 cm. Flowers: epicalyx bractlets lanceolate to ovate, 3–4 × 1–2 mm; hypanthium 2.5–3.5 mm diam.; sepals 3.5–5 mm, apex obtuse to subacute, glands sparse to common, often ± obscured; petals pale-yellow, often overlapping, 5–7 × 5–8 (–9) mm, distinctly longer than sepals; filaments 0.5–1.5 mm, anthers ± 0.5 mm; carpels 30–60, styles 0.8–0.9 mm. Achenes 1–1.3 mm.


Phenology: Flowering summer.
Habitat: Dry tundra meadows, gravel and loam ridges, loam flats, sandy bluffs
Elevation: 0–200 m

Distribution

V9 319-distribution-map.jpg

Greenland, N.W.T., Nunavut, e Asia (Russian Far East)

Discussion

For discussion of probable parentage and resultant diagnostic characters, see discussion of 89. Potentilla pedersenii.

Selected References

None.

Lower Taxa

None.

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

... more about "Potentilla uschakovii"
green +  and gray +
not glaucous +  and cottony +
grayish white +  and white +
not glaucous +  and cottony +
smooth +  and faintly rugose +
1mm +  and 1.3mm +
grayish green +  and gray +
0.5 cm5 mm <br />0.005 m <br /> (?) +
Reidar Elven +  and Barbara Ertter +
Jurtzev +
subpalmate +, palmate +  and ternate +
opposite +  and alternate +
1 cm10 mm <br />0.01 m <br /> (5 cm50 mm <br />0.05 m <br />) +
Rubricaules +
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 />) +
coriaceous +
reduced +
free +  and distinct +
hairy +  and glabrous +
broadly elliptic +  and obovate +
0 cm0 mm <br />0 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Greenland +, N.W.T. +, Nunavut +  and e Asia (Russian Far East) +
not +  and aggregated +
0–200 m +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
lanceolate +  and ovate +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (2 cm20 mm <br />0.02 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 />) +
crisped +
Dry tundra meadows, gravel and loam ridges, loam flats, sandy bluffs +
stoloniferous +  and short-rhizomatous +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
straight +
dense +  and sparse +
less appressed +  and ascending +
common +  and abundant +
crisped +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 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 />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.35 cm3.5 mm <br />0.0035 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 />) +
open +  and 1-3(-4)-flowered +
crassinucellate +
bipinnate +, odd-pinnate +, subpalmate +, palmate +  and ternate +
opposite +  and alternate +
marcescent +
well-developed +
persistent +
cauline +  and basal +
reduced +
oblanceolate +  and obovate oblong or elliptic +
linear +  and oblanceolate +
palmate +  and pinnate +
1/2 +  and 3/4 +
inferior +  and superior +
clustered +, biseriate +  and superposed +
2 cm20 mm <br />0.02 m <br /> (5 cm50 mm <br />0.05 m <br />) +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
overlapping +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
free +  and distinct +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
distinctly longer +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (3 cm30 mm <br />0.03 m <br />) +
2/3 +  and 3/5 +
1 cm10 mm <br />0.01 m <br /> (?) +
Flowering summer. +
adnate +, free +, connate +  and distinct +
ternate +, usually palmate +  and subpalmate +
1 cm10 mm <br />0.01 m <br /> (10 cm100 mm <br />0.1 m <br />) +
0 cm0 mm <br />0 m <br /> (3 cm30 mm <br />0.03 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (2 cm20 mm <br />0.02 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
Bot. Zhurn. (Moscow & Leningrad) +
not arillate +
persistent +
free +  and distinct +
erect +  and spreading +
lanceolate +  and broadly ovate or deltate +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
free +  and distinct +
not rooting +
reddish +  and green +
(1-)1.5-4(-6) times basal leaves +
ascending +  and nearly erect +
1 +  and many +
not flagelliform +
palmate +  and pinnate +
linear;ovate +
deciduous +
distinct +
subapical +
papillate-swollen +, less columnar +  and tapered +
rough-thickened +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.09 cm0.9 mm <br />9.0e-4 m <br />) +
Potentilla ser. +
not fleshy-thickened +
Potentilla uschakovii +
Potentilla sect. Rubricaules +
species +
3 +  and 4 +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
inconspicuous +
enlarged +
biennial +, annual +  and perennial +
herb +  and matted +