Potentilla pseudosericea

Rydberg

Monogr. N. Amer. Potentilleae, 98, plate 36, figs. 1–5. 1898.

Common names: Mono or strigose cinquefoil
Endemic
Treatment appears in FNA Volume 9. Treatment on page 209. Mentioned on page 207.

Caudex branches sometimes sheathed with marcescent whole leaves. Stems decumbent to ascending, (0.2–) 0.5–1.5 (–2.2) dm. Basal leaves usually palmate, rarely also ternate on same plant or subpalmate, (1–) 2–6 (–8) cm; petiole (0.5–) 1–2.5 cm, long hairs abundant to dense, ± appressed, 0.5–1.2 mm, stiff, verrucose, crisped hairs common, cottony hairs absent, glands sparse to abundant but usually obscured; leaflets (3–) 5–7, proximalmost separated by 0–2 mm, central ± obovate, (0.5–) 1–1.5 (–2) × (0.3–) 0.5–0.8 (–1) cm, petiolules 0–1 mm, distal 3/4 to nearly whole margin incised 3/4+ to midvein, teeth 2–4 (–5) per side, (2–) 3–6 (–10) mm, apical tufts 0.5 mm, abaxial surfaces white, long hairs common to abundant, cottony-crisped hairs dense, short hairs and glands absent or obscured, adaxial grayish green, long hairs abundant, 0.5–1.5 mm, ± stiff, short-crisped (rarely ± cottony) hairs sparse to common, glands absent or sparse. Cauline leaves 1–3. Inflorescences (1–) 3–10 (–20) -flowered, congested or ± elongating in fruit, branch angle 5–30°. Pedicels 0.2–0.7 cm, proximal to 1.3 cm. Flowers: epicalyx bractlets narrowly elliptic, (1–) 1.5–2.5 (–3) × 0.5–1 mm; hypanthium 3–4 mm diam.; sepals 2–4 (–5) mm, apex obtuse to bluntly acute, glands sparse, obscured; petals pale-yellow, not overlapping, 2–4 × 2–3 mm, ± equal to sepals (slightly longer than in Inyo County); filaments 1–1.5 mm, anthers 0.3–0.5 mm; carpels 30–50, styles 1–1.2 mm. Achenes 1–1.4 mm.


Phenology: Flowering summer.
Habitat: Alpine fellfields, moist gravel, talus, on dolomite and quartzite
Elevation: 3200–3600 m

Discussion

Potentilla pseudosericea is currently confirmed only from the central Sierra Nevada and Sweetwater and White mountains of California (B. Ertter 2008). The species is similar to P. modesta but has a more tightly strigose, silvery vestiture and more numerous and deeply incised leaflets.

Selected References

None.

Lower Taxa

None.

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

... more about "Potentilla pseudosericea"
green +  and gray +
not glaucous +  and cottony +
not glaucous +  and cottony +
smooth +  and faintly rugose +
1mm +  and 1.4mm +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
Reidar Elven +  and Barbara Ertter +
Rydberg +
subpalmate +, ternate +  and palmate +
opposite +  and alternate +
6 cm60 mm <br />0.06 m <br /> (8 cm80 mm <br />0.08 m <br />) +
2 cm20 mm <br />0.02 m <br /> (6 cm60 mm <br />0.06 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 +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 m <br />) +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
0 cm0 mm <br />0 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Mono or strigose cinquefoil +
not +  and aggregated +
3200–3600 m +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
0.1 cm1 mm <br />0.001 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 +
Alpine fellfields, moist gravel, talus, on dolomite and quartzite +
stoloniferous +  and short-rhizomatous +
straight +
less appressed +  and spreading +
sparse +  and common +
verrucose +
short-crisped +, cottony-crisped +  and crisped +
0.05 cm0.5 mm <br />5.0e-4 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 /> (0.4 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 />) +
(1-)3-10(-20)-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 />) +
0.2 cm2 mm <br />0.002 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
not overlapping +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
free +  and distinct +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
distinctly longer +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
1 cm10 mm <br />0.01 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
0 cm0 mm <br />0 m <br /> (0.1 cm1 mm <br />0.001 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 /> (1.3 cm13 mm <br />0.013 m <br />) +
Monogr. N. Amer. Potentilleae, +
not arillate +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
persistent +
free +  and distinct +
erect +  and spreading +
lanceolate +  and broadly ovate or deltate +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
free +  and distinct +
not rooting +
reddish +  and green +
(1-)1.5-4(-6) times basal leaves +
decumbent +  and ascending +
1 +  and many +
not flagelliform +
palmate +  and pinnate +
linear;ovate +
deciduous +
distinct +
subapical +
papillate-swollen +, less columnar +  and tapered +
rough-thickened +
0.1 cm1 mm <br />0.001 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
Potentilla ser. +
not fleshy-thickened +
Potentilla pseudosericea +
Potentilla sect. Rubricaules +
species +
0.6 cm6 mm <br />0.006 m <br /> (1 cm10 mm <br />0.01 m <br />) +
2 +  and 4 +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
inconspicuous +
enlarged +
biennial +, annual +  and perennial +
herb +  and matted +