Potentilla sierrae-blancae

Wooton & Rydberg in P. A. Rydberg

in P. A. Rydberg, Monogr. N. Amer. Potentilleae, 2: 57, plate 18, figs. 3–5. 1898.

Common names: Sierra Blanca cinquefoil
Conservation concernEndemic
Treatment appears in FNA Volume 9. Treatment on page 182. Mentioned on page 177, 189.

Stems 0.2–1 dm, lengths 1–1.5 times basal leaves. Basal leaves palmate, 2–8 cm; petiole 0.5–5 cm, straight hairs sparse to abundant, sometimes absent, ± appressed, 2–3 mm, usually ± stiff, cottony hairs absent, glands absent; leaflets (3–) 4–5, at tip of leaf axis, separate, proximal pair separated from others by 0 (–1) mm of leaf axis, central leaflets narrowly cuneate-oblanceolate, 0.8–2.2 × 0.2–0.5 cm, petiolules 0 (–1) mm, less than distal 1/4 of margins incised 1/2–3/4 to midvein, teeth 1 (–2) per side, ± separate, 1–2 mm, surfaces similar, green, straight hairs mostly absent (except on margins), appressed, 1–2 mm, stiff, cottony hairs absent, glands absent, rarely sparse. Inflorescences solitary flowers or 2–3-flowered. Pedicels 1–4 cm. Flowers: epicalyx bractlets narrowly to widely elliptic-ovate, 2–3.5 × 1–1.5 mm; hypanthium 3–5 mm diam.; sepals 3–5 mm, apex obtuse to acute; petals 5–7 × 4–6 mm; filaments 1–2 mm, anthers 0.4–0.8 mm; carpels 5–20, styles 2 mm. Achenes 1.5 mm, smooth.


Phenology: Flowering summer.
Habitat: Windswept barren ridges, subalpine grasslands, rock outcrops
Elevation: 2400–3700 m

Discussion

Of conservation concern.

Potentilla sierrae-blancae is restricted to the White Mountains, Lincoln and Otero counties. P. A. Rydberg (1898, 1908d) and B. C. Johnston (1985) placed P. sierrae-blancae in sect. (or group) Aureae; the species fits well in sect. Concinnae, combining the few-flowered inflorescence of P. angelliae with the tridentate leaflets of P. bicrenata and P. johnstonii.

Selected References

None.

Lower Taxa

None.

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

green +  and white +
green +  and white +
smooth +  and more or less rugose +
green +  and grayish +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
Barbara Ertter +
Wooton & Rydberg in P. A. Rydberg +
opposite +  and alternate +
2 cm20 mm <br />0.02 m <br /> (8 cm80 mm <br />0.08 m <br />) +
Concinnae +
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 +
0.8 cm8 mm <br />0.008 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
cuneate-oblanceolate +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Sierra Blanca cinquefoil +
not +  and aggregated +
2400–3700 m +
0.2 cm2 mm <br />0.002 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
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 />) +
Windswept barren ridges, subalpine grasslands, rock outcrops +
stoloniferous +  and short-rhizomatous +
straight +
less appressed +  and ascending +
sparse +  and abundant +
crisped +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 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 />) +
racemiform +, open +, cymose +  and (1-)2-12(-15)-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 /> (4.5 cm45 mm <br />0.045 m <br />) +
1 cm10 mm <br />0.01 m <br /> (4 cm40 mm <br />0.04 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (0.9 cm9 mm <br />0.009 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 /> (0.6 cm6 mm <br />0.006 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (5 cm50 mm <br />0.05 m <br />) +
0 cm0 mm <br />0 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
1/2 +  and 3/4 +
0 cm0 mm <br />0 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 +
in P. A. Rydberg, Monogr. N. Amer. Potentilleae, +
not arillate +
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 />) +
Conservation concern +  and Endemic +
free +  and distinct +
not rooting +
reddish +  and green +
prostrate +  and more or less decumbent +
1-1.5 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 +
2 cm20 mm <br />0.02 m <br /> (?) +
not fleshy +
Potentilla sierrae-blancae +
Potentilla sect. Concinnae +
species +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
inconspicuous +
enlarged +
usually rosetted +  and tufted +
biennial +, annual +  and perennial +
herb +  and matted +