Potentilla multisecta

(S. Watson) Rydberg

Bull. Torrey Bot. Club 23: 397. 1896.

Common names: Great Basin cinquefoil
EndemicIllustrated
Basionym: Potentilla diversifolia var. multisecta S. Watson Botany (Fortieth Parallel), 86. 1871
Treatment appears in FNA Volume 9. Treatment on page 181. Mentioned on page 172, 177, 178.

Stems 0.5–2 (–2.7) dm, lengths 1–2 (–3) times basal leaves. Basal leaves usually palmate, sometimes subpalmate, 3–12 (–15) cm; petiole 1–6 (–13) cm, straight hairs ± abundant, ± appressed, 1–1.5 mm, stiff, cottony hairs absent, glands absent or sparse; leaflets (3–) 5, usually on tip, sometimes to distal 1/4 of leaf axis, ± overlapping, proximal pair separated from others by 0–10 mm of leaf axis, central leaflets ± obovate, 1–2.5 (–4) × (0.5–) 1–1.5 (–2) cm, petiolule 0–2 mm, distal 1/2+ of margins incised 3/4+ to midvein, teeth 2–5 per side, separate, 3–10 (–14) mm, surfaces similar, green to grayish, straight hairs sparse to abundant, appressed, 1–1.5 mm, usually stiff, short crisped hairs sometimes present, cottony hairs absent, glands absent or sparse. Inflorescences (1–) 2–6 (–10) -flowered. Pedicels 1–3 (–4) cm. Flowers: epicalyx bractlets lanceolate-elliptic to narrowly ovate, 2–4 × 1–1.5 mm; hypanthium 3–5 mm diam.; sepals 3–5 (–6) mm, apex ± acute; petals (2.5–) 5–7 × (2–) 4–5 mm; filaments 1–2 mm, anthers 0.6–1 mm; carpels 5–20, styles 2–3 mm. Achenes 2–2.5 mm, smooth.


Phenology: Flowering summer.
Habitat: Rocky slopes, dry meadows, in sagebrush scrub, pinyon-juniper woodlands, limber pine woodlands
Elevation: 2100–3500 m

Distribution

V9 266-distribution-map.jpg

Idaho, Mont., Nev., Utah, Wyo.

Discussion

The center of distribution of Potentilla multisecta is northeastern Nevada and northwestern Utah; the best disposition of more northern populations, which tend to be hairier and more compact, is unresolved. Populations in eastern Idaho, southwestern Montana, and western Wyoming are components of an unresolved zone of apparent intergradation that also includes P. ovina var. ovina (sect. Multijugae), P. glaucophylla var. perdissecta (sect. Graciles), and members of sect. Subjugae. Significant variation also exists among populations in Nevada and Utah. Not included here are some subpalmate collections from Saskatchewan that would key to P. multisecta (for example, A. Breitung 4045, MO, RM), whose optimum disposition has yet to be resolved.

Selected References

None.

Lower Taxa

None.

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

... more about "Potentilla multisecta"
green +  and white +
green +  and white +
smooth +  and more or less rugose +
2mm +  and 2.5mm +
green +  and grayish +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
Barbara Ertter +
(S. Watson) Rydberg +
subpalmate +  and palmate +
opposite +  and alternate +
12 cm120 mm <br />0.12 m <br /> (15 cm150 mm <br />0.15 m <br />) +
3 cm30 mm <br />0.03 m <br /> (12 cm120 mm <br />0.12 m <br />) +
Potentilla diversifolia var. multisecta +
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 +
2.5 cm25 mm <br />0.025 m <br /> (4 cm40 mm <br />0.04 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 /> (2.5 cm25 mm <br />0.025 m <br />) +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Great Basin cinquefoil +
Idaho +, Mont. +, Nev. +, Utah +  and Wyo. +
not +  and aggregated +
2100–3500 m +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
lanceolate-elliptic +  and narrowly ovate +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 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 />) +
Rocky slopes, dry meadows, in sagebrush scrub, pinyon-juniper woodlands, limber pine woodlands +
stoloniferous +  and short-rhizomatous +
straight +
less appressed +  and ascending +
sparse +  and abundant +
crisped +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 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 /> (0.5 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 />) +
(1-)2-6(-10)-flowered +
crassinucellate +
bipinnate +, odd-pinnate +, subpalmate +, palmate +  and ternate +
opposite +  and alternate +
marcescent +
well-developed +
persistent +
cauline +  and basal +
reduced +
cuneate +  and obovate +
linear +  and oblanceolate +
palmate +  and pinnate +
entire +  and cleft +
1/4 +  and 3/4 +
inferior +  and superior +
clustered +, biseriate +  and superposed +
3 cm30 mm <br />0.03 m <br /> (4 cm40 mm <br />0.04 m <br />) +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 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 /> (0.9 cm9 mm <br />0.009 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
free +  and distinct +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
6 cm60 mm <br />0.06 m <br /> (13 cm130 mm <br />0.13 m <br />) +
1 cm10 mm <br />0.01 m <br /> (6 cm60 mm <br />0.06 m <br />) +
0 cm0 mm <br />0 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Flowering summer. +
adnate +, free +, connate +  and distinct +
subpinnate +  and pinnate +
12 cm120 mm <br />0.12 m <br /> (15 cm150 mm <br />0.15 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (12 cm120 mm <br />0.12 m <br />) +
usually not much longer +
Bull. Torrey Bot. Club +
not arillate +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
persistent +
free +  and distinct +
erect +  and spreading +
lanceolate +  and broadly ovate or deltate +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Endemic +  and Illustrated +
free +  and distinct +
not rooting +
reddish +  and green +
prostrate +  and more or less decumbent +
1-2(-3) times basal leaves +
prostrate +  and erect +
1 +  and many +
not flagelliform +
palmate +  and pinnate +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
deciduous +
distinct +
subapical +
in proximal 1/5 +, not papillate-swollen +, filiform +  and filiform-tapered +
rough-thickened +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
green +  and grayish +
not fleshy +
Potentilla multisecta +
Potentilla sect. Concinnae +
species +
1 cm10 mm <br />0.01 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
2 +  and 5 +
0.3 cm3 mm <br />0.003 m <br /> (1 cm10 mm <br />0.01 m <br />) +
inconspicuous +
enlarged +
usually rosetted +  and tufted +
biennial +, annual +  and perennial +
herb +  and matted +