Potentilla sect. Lupinoides

Tausch

Hort. Canal. 1. 1823.

Introduced
Synonyms: Potentilla sect. Fragariastrum (Heister ex Fabricus) Seringe Potentilla subg. Fragariastrum (Heister ex Fabricus) Reichenbach Potentilla sect. Fragarioides (Th. Wolf) Juzepczuk Potentilla sect. Quinquefolium Poeverlein
Treatment appears in FNA Volume 9. Treatment on page 131. Mentioned on page 124, 132.

Perennials, rosetted or ± tufted to openly matted, sometimes ± stoloniferous; taproots not fleshy-thickened; vestiture of long hairs, glands absent or sparse, not red. Stems: mostly ± prostrate, not flagelliform, not rooting at nodes, intermixed in persistent basal rosettes, 0.4–1 (–1.5) dm, lengths 0.5–1 times basal leaves, longer nonflowering often developing, sometimes rooting at nodes and forming new basal rosettes. Leaves: basal not in ranks; cauline (flowering-stems) 0–2; primary leaves ternate [palmate], (2–) 6–10 (–20) cm; petiole: long hairs spreading, weak, glands absent or sparse; leaflets 3 [–7], at tip of leaf axis, overlapping, broadly elliptic to obovate, margins flat, distal 1/2–3/4 evenly incised 1/4 or less to midvein [entire], teeth (3–) 4–7 per side, surfaces ± similar, green (abaxial often paler), not glaucous, long hairs weak, cottony hairs absent. Inflorescences solitary flowers or 2–3-flowered, ± cymose, open. Pedicels often recurved in fruit, 1–3 cm, proximal not much longer than distal. Flowers 5-merous; hypanthium 3–5 mm diam.; petals white, usually obcordate, 4–7 mm, equal to or slightly longer than sepals, apex usually ± retuse; stamens ca. 20; styles subapical, filiform, not papillate-swollen proximally, 1.5–2 mm. Achenes faintly rugose.

Distribution

Introduced; Nfld. and Labr. (Nfld.), Eurasia

Discussion

Species 6 (1 in the flora).

Section Lupinoides belongs to the Alba clade of M. H. Töpel et al. (2011), which is an early radiation of Potentilla in southern Europe and southwestern Asia (C. Dobeš and J. Paule 2010). In addition to the species included here, P. alba Linnaeus has been reported in Massachusetts (B. A. Sorrie 2005) and Connecticut; it has apparently not become naturalized. Plants of P. alba are not stoloniferous and the five leaflets are nearly entire.

Selected References

None.

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

Barbara Ertter +  and James L. Reveal +
Tausch +
compound +  and simple +
opposite +  and alternate +
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 +
Nfld. and Labr. (Nfld.) +  and Eurasia +
not +  and aggregated +
5-merous +, open +, cymose +  and 2-3-flowered +
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 />) +
stoloniferous +  and short-rhizomatous +
straight +
crisped +
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 /> (0.5 cm5 mm <br />0.005 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 +
bipinnate +, odd-pinnate +, subpalmate +, palmate +  and ternate +
opposite +  and alternate +
marcescent +
well-developed +
persistent +
reduced +
broadly elliptic +  and obovate +
linear +  and oblanceolate +
palmate +  and pinnate +
less +, 1/4 +, 1/2 +  and 3/4 +
inferior +  and superior +
clustered +, biseriate +  and superposed +
not much longer +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
free +  and distinct +
slightly longer +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
adnate +, free +, connate +  and distinct +
10 cm100 mm <br />0.1 m <br /> (20 cm200 mm <br />0.2 m <br />) +
6 cm60 mm <br />0.06 m <br /> (10 cm100 mm <br />0.1 m <br />) +
Hort. Canal. +
not arillate +
persistent +
free +  and distinct +
erect +  and spreading +
lanceolate +  and broadly ovate or deltate +
Introduced +
free +  and distinct +
rooting +  and not rooting +
reddish +  and green +
0.5-1 times basal leaves +
prostrate +  and erect +
1 +  and many +
not flagelliform +
palmate +  and pinnate +
deciduous +
distinct +
subapical +
papillate-swollen +  and filiform +
rough-thickened +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
not glaucous +
Potentilla sect. Fragariastrum +, Potentilla subg. Fragariastrum +, Potentilla sect. Fragarioides +  and Potentilla sect. Quinquefolium +
not fleshy-thickened +
Potentilla sect. Lupinoides +
Potentilla +
section +
4 +  and 7 +
inconspicuous +
enlarged +
tufted +  and rosetted +
biennial +, annual +  and perennial +
herb +  and matted +