Potentilla gracilis var. gracilis
Common names Slender cinquefoil
Abbreviation code POGR
- Kingdom: Plantae
- (unranked): Angiosperms
- (unranked): Eudicots
- Order: Rosales
- Family: Rosaceae
- Subfamily: Rosoideae
- Genus: Potentilla
- Species: P. gracilis
General: Highly variable perennial from a branched crown, the several ascending or erect stems 4-8 dm. tall.
Leaves: Basal leaves numerous, with petioles to 3 dm. long, palmately divided; the leaflets 7-9, broadly oblanceolate to oblong-elliptic, varying from glabrous and green on both surfaces to hairy above and white-woolly below, toothed to deeply dissected; cauline leaves 1-2, reduced; stipules up to 2.5 cm. long, entire to lacerate.
Flowers: Inflorescence large, many-flowered, open, somewhat flat-topped; calyx 6-10 mm. broad, the 5 lobes 4-10 mm. long, ovate-lanceolate, the alternating bracteoles narrowly lanceolate, nearly as long; petals 5, yellow, obcordate, longer than the sepals; stamens 20; pistils numerous, the style slender, sub-terminal on the achene and the same length.
Fruit: Achene 1.5-2 mm. long, smooth, greenish.
July - Aug