Potentilla rimicola

(Munz & I. M. Johnston) Ertter

Phytologia 71: 420. 1992.

Common names: Cliff cinquefoil
Conservation concern
Basionym: Potentilla wheeleri var. rimicola Munz & I. M. Johnston Bull. S. Calif. Acad. Sci. 24: 19. 1925
Treatment appears in FNA Volume 9. Treatment on page 185. Mentioned on page 183.

Short hairs not well differentiated from long hairs, absent or sparse throughout. Stems 0.4–2 (–3) dm. Basal leaves palmate, 3–10 cm; petiole 1–7 cm, long hairs abundant, spreading to ascending, 1–3 mm, weak, glands abundant; leaflets 5, central oblanceolate to broadly obovate-cuneate or nearly orbiculate, 1–3 × 0.8–2 cm, scarcely to distinctly petiolulate, distal ± 1/3 of margins evenly incised ± 1/4 to midvein, teeth 2–4 per side, surfaces green, long hairs sparse to abundant, 1 mm, glands ± abundant. Inflorescences 3–20-flowered. Pedicels 0.5–2.5 (–4) cm. Flowers: epicalyx bractlets lanceolate-elliptic, rarely linear, 1–2 (–5) × 0.5–1.5 mm; hypanthium 2–3.5 mm diam.; sepals 2–4 (–5) mm, apex ± acute; petals ± paler abaxially, bright-yellow adaxially, ± obcordate, (3–) 4–7 × 3–6 mm; filaments 1.5–2.5 mm, anthers 0.5–1 mm; carpels 5–20, styles 1.5–2.5 mm. Achenes 1.5 mm, smooth to faintly rugose.


Phenology: Flowering May–Sep.
Habitat: Crevices on protected faces of granitic outcrops in conifer woodlands
Elevation: 2400–2900 m

Distribution

V9 274-distribution-map.jpg

Calif., Mexico (Baja California)

Discussion

Of conservation concern.

Potentilla rimicola is known only from Tahquitz Peak in the San Jacinto Mountains, Riverside County, California, and the Sierra San Pedro Mártir in Baja California, Mexico. Plants are rooted in rock crevices, often on vertical surfaces, in contrast to P. wheeleri, which is rooted in the ground.

Selected References

None.

Lower Taxa

None.

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

... more about "Potentilla rimicola"
smooth +  and faintly rugose +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
Barbara Ertter +
(Munz & I. M. Johnston) Ertter +
opposite +  and alternate +
3 cm30 mm <br />0.03 m <br /> (10 cm100 mm <br />0.1 m <br />) +
Potentilla wheeleri var. rimicola +
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 +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
oblanceolate +  and broadly obovate-cuneate or nearly orbiculate +
0.8 cm8 mm <br />0.008 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Cliff cinquefoil +
Calif. +  and Mexico (Baja California) +
not +  and aggregated +
2400–2900 m +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
5-merous +, racemiform +, open +, cymose +  and 2-10(-20)-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 />) +
Crevices on protected faces of granitic outcrops in conifer woodlands +
stoloniferous +  and short-rhizomatous +
straight +
spreading +  and ascending +
sparse +  and abundant +
crisped +
1 cm10 mm <br />0.01 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
differentiated +
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 />) +
0.2 cm2 mm <br />0.002 m <br /> (0.35 cm3.5 mm <br />0.0035 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 +
separate +  and slightly overlapping +
orbiculate +, elliptic +  and broadly obovate or cuneate +
linear +  and oblanceolate +
palmate +  and pinnate +
1/5 +  and 3/4 +
inferior +  and superior +
clustered +, biseriate +  and superposed +
2.5 cm25 mm <br />0.025 m <br /> (4 cm40 mm <br />0.04 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
free +  and distinct +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
1 cm10 mm <br />0.01 m <br /> (7 cm70 mm <br />0.07 m <br />) +
Flowering May–Sep. +
adnate +, free +, connate +  and distinct +
palmate +  and ternate +
10 cm100 mm <br />0.1 m <br /> (18 cm180 mm <br />0.18 m <br />) +
2 cm20 mm <br />0.02 m <br /> (10 cm100 mm <br />0.1 m <br />) +
usually not much longer +
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 />) +
Conservation concern +
free +  and distinct +
not rooting +
reddish +  and green +
1-3(-5) times basal leaves +
prostrate to decumbent +
1 +  and many +
not flagelliform +
palmate +  and pinnate +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
deciduous +
distinct +
subapical +
papillate-swollen +, tapered-columnar +  and filiform +
rough-thickened +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
not glaucous +
Potentilla rimicola +
Potentilla sect. Subviscosae +
species +
2 +  and 4 +
inconspicuous +
enlarged +
tufted +  and rosetted +
biennial +, annual +  and perennial +
herb +  and matted +