Potentilla rubella

T. J. Sørensen

Meddel. Grønland 101(2): 106, plates 1–3. 1934.

Synonyms: Potentilla rubelloides V. V. Petrovsky
Treatment appears in FNA Volume 9. Treatment on page 147. Mentioned on page 146, 189.

Glands sparse to abundant, red, stipitate (at least on calyx and hypanthium). Stems 0.5–2 dm. Basal leaves 3–6 cm; petiole 2–4 cm, hairs common to abundant, ± ascending to spreading, 1–1.5 mm, weak to stiff, glands sparse to common; leaflets (4–) 5 (–6), central one obovate, 0.5–1.5 × 0.3–0.9 cm, distal ca. 1/2 of margin incised ca. 1/4 to midvein, teeth (2–) 3 (–4) per side, surfaces ± similar, abaxial pale reddish green, hairs sparse to common on primary-veins, spreading, 0.6–1 mm, ± stiff, adaxial green or reddish, glabrous or sparsely hairy. Cauline leaves 1–2; stipules fused with all or most of petiole, free portion shorter than fused portion. Inflorescences (1–) 2–5-flowered. Pedicels 1–3 cm (proximalmost to 5 cm). Flowers: epicalyx bractlets linear to narrowly lanceolate, 4–6 × 0.9–1.2 mm; hypanthium 3–4 mm diam.; sepals 5–7 mm, apex subacute or acute; petals 7–9 × 4–6 mm; filaments 0.7–0.9 mm, anthers 0.4 mm; carpels 40–50, styles 0.9–1.1 mm. Achenes not known. 2n = 28, 42 (Siberia).


Phenology: Flowering summer.
Habitat: Herb-Salix meadows, herb slopes, open tundra, among mosses
Elevation: 0–500 m

Discussion

Potentilla rubella combines characteristics of P. hyparctica (sect. Aureae) and P. stipularis. The species is strongly supported as an intersectional hybrid with polytopic origins. It reproduces by seed, shows no transitions to its presumed parental species, and has significant ranges in eastern and northeastern Greenland and northern Asia.

Selected References

None.

Lower Taxa

None.

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

... more about "Potentilla rubella"
green +  and pale reddish +
smooth +  and faintly rugose +
reddish +  and green +
hairy +  and glabrous +
0.4 cm4 mm <br />0.004 m <br /> (?) +
Reidar Elven +, Barbara Ertter +  and James L. Reveal +
T. J. Sørensen +
compound +  and simple +
opposite +  and alternate +
3 cm30 mm <br />0.03 m <br /> (6 cm60 mm <br />0.06 m <br />) +
Chrysanthae +
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 +
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 /> (0.9 cm9 mm <br />0.009 m <br />) +
Greenland +  and Asia +
not +  and aggregated +
0–500 m +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
linear +  and narrowly lanceolate +
0.09 cm0.9 mm <br />9.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.09 cm0.9 mm <br />9.0e-4 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 />) +
Herb-Salix meadows, herb slopes, open tundra, among mosses +
stoloniferous +  and short-rhizomatous +
straight +
stiff +  and weak +
spreading +  and less ascending +
sparse +  and common +
crisped +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.1 cm1 mm <br />0.001 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 /> (0.4 cm4 mm <br />0.004 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 />) +
crassinucellate +
bipinnate +, odd-pinnate +, subpalmate +, palmate +  and ternate +
opposite +  and alternate +
marcescent +
well-developed +
persistent +
cauline +  and basal +
reduced +
not +  and overlapping +
oblanceolate-elliptic +  and obovate +
linear +  and oblanceolate +
palmate +  and pinnate +
1/4 +  and 1/3-1/2 +
inferior +  and superior +
clustered +, biseriate +  and superposed +
3 cm30 mm <br />0.03 m <br /> (6 cm60 mm <br />0.06 m <br />) +
curved +  and straight +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
free +  and distinct +
0.7 cm7 mm <br />0.007 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
Flowering summer. +
adnate +, free +, connate +  and distinct +
fused +  and free +
25 cm250 mm <br />0.25 m <br /> (35 cm350 mm <br />0.35 m <br />) +
3 cm30 mm <br />0.03 m <br /> (25 cm250 mm <br />0.25 m <br />) +
Meddel. Grønland +
not arillate +
persistent +
free +  and distinct +
erect +  and spreading +
lanceolate +  and broadly ovate or deltate +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
free +  and distinct +
not rooting +
reddish +  and green +
2-5 times basal leaves +
ascending +  and erect +
1 +  and many +
not flagelliform +
palmate +  and pinnate +
deciduous +
distinct +
subapical +
papillate-swollen +, rarely columnar-filiform +  and tapered +
rough-thickened +
0.09 cm0.9 mm <br />9.0e-4 m <br /> (0.11 cm1.1 mm <br />0.0011 m <br />) +
green +  and pale green or reddish +
Potentilla rubelloides +
not fleshy-thickened +
Potentilla rubella +
Potentilla sect. Chrysanthae +
species +
incised +
inconspicuous +
enlarged +
tufted +  and rosetted +
biennial +, annual +  and perennial +
herb +  and matted +