Potentilla townsendii

Rydberg

Bull. Torrey Bot. Club 28: 174. 1901.

Common names: Townsend’s cinquefoil
Illustrated
Treatment appears in FNA Volume 9. Treatment on page 153. Mentioned on page 150, 152.

Glands absent or inconspicuous, uncolored. Stems ascending to nearly erect, (1–) 2–5 (–7.5) dm. Basal leaves usually not in ranks, palmate, rarely subpalmate, (2–) 5–20 (–30) cm; petiole (1–) 2–15 (–25) cm, long hairs usually absent or sparse and appressed, sometimes common and spreading, 1–1.5 mm, stiff, short, crisped, and cottony hairs absent, glands absent; leaflets 5–7 (–8), usually on tip, rarely on less than distal 1/10, of leaf axis, separate, largest ones narrowly oblanceolate-elliptic, (1.5–) 2–5 (–6) × 0.5–1.2 (–1.5) cm, margins flat, distal (1/4–) 1/2–3/4 evenly incised 1/4–1/3 to midvein, undivided medial blade 4–11 mm wide, teeth (2–) 4–8 (–9) per side, mostly broadly lanceolate, 1–2 mm, surfaces similar, green, not glaucous, long hairs usually absent or limited to veins and margins, short, crisped, and cottony hairs absent, glands absent. Cauline leaves 1–3. Inflorescences (5–) 10–20 (–25) -flowered. Pedicels 0.7–3 (–3.5) cm. Flowers: epicalyx bractlets lanceolate to elliptic, (2–) 2.5–5 (–6) × 0.5–1 (–1.4) mm, hairs sparse, ± appressed, glands absent; hypanthium 3.5–5 mm diam.; sepals 4–8 (–9) mm, apex acute to long acuminate; petals 5–10 × 5–10 (–12) mm; filaments 1–3 mm, anthers (0.5–) 0.6–1 mm; carpels 15–30, styles filiform above papillate-swollen base, (1–) 1.5–2 mm. Achenes 1.1–1.6 mm.


Phenology: Flowering summer.
Habitat: Edges of meadows, dry gravelly flats and slopes, in montane to subalpine conifer woodlands, mixed grassland communities
Elevation: (2300–)2700–3700 m

Distribution

V9 223-distribution-map.jpg

Ariz., N.Mex., Mexico (Chihuahua)

Discussion

Although previously applied only to collections from Chihuahua, Mexico, Potentilla townsendii is here used to accommodate most plants from Arizona and New Mexico previously placed in P. glaucophylla (as P. diversifolia Lehmann). Plants have narrow, shallowly toothed leaflets; stems, petioles, and leaflet veins that are often reddish; and larger anthers than P. glaucophylla. As now circumscribed, P. townsendii is known in the United States primarily from the White Mountains of east-central Arizona and the high mountains of northern New Mexico. Whether these plants are truly conspecific with those from Chihuahua, Mexico, remains to be confirmed. The species might also occur in Colorado and Utah, but the best disposition of these problematic populations is uncertain. Somewhat hairy plants with subpalmate leaves are interpreted as introgression from P. hippiana or other species.

Selected References

None.

Lower Taxa

None.

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

... more about "Potentilla townsendii"
stiff +  and weak +
1.1mm +  and 1.6mm +
blue-green +, green +  and grayish +
stiff +  and weak +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
Barbara Ertter +  and James L. Reveal +
Rydberg +
5 cm50 mm <br />0.05 m <br /> (6 cm60 mm <br />0.06 m <br />) +
1.2 cm12 mm <br />0.012 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
2 cm20 mm <br />0.02 m <br /> (5 cm50 mm <br />0.05 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
subpalmate +  and palmate +
20 cm200 mm <br />0.2 m <br /> (30 cm300 mm <br />0.3 m <br />) +
5 cm50 mm <br />0.05 m <br /> (20 cm200 mm <br />0.2 m <br />) +
papillate-swollen +
Graciles +
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 +
Townsend’s cinquefoil +
Ariz. +, N.Mex. +  and Mexico (Chihuahua) +
not +  and aggregated +
(2300–)2700–3700 m +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.14 cm1.4 mm <br />0.0014 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
lanceolate +  and elliptic +
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 /> (0.3 cm3 mm <br />0.003 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 />) +
inconspicuous +
Edges of meadows, dry gravelly flats and slopes, in montane to subalpine conifer woodlands, mixed grassland communities +
stoloniferous +  and short-rhizomatous +
blue-green +, green +  and grayish +
straight +
limited +, common +  and sparse +
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 />) +
0.35 cm3.5 mm <br />0.0035 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 />) +
(5-)10-20(-25)-flowered +
crassinucellate +
bipinnate +, odd-pinnate +, subpalmate +, palmate +  and ternate +
opposite +  and alternate +
stiff +  and weak +
distal +  and up-to-distal +
marcescent +
well-developed +
persistent +
cauline +  and basal +
reduced +
narrowly oblanceolate +  and obovate elliptic oblong cuneate or flabellate +
linear +  and oblanceolate +
palmate +  and pinnate +
blue-green +, green +  and grayish +
stiff +  and weak +
1/4 +  and 1/3 +
0.4 cm4 mm <br />0.004 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
blue-green +, green +  and grayish +
stiff +  and weak +
inferior +  and superior +
clustered +, biseriate +  and superposed +
3 cm30 mm <br />0.03 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (3 cm30 mm <br />0.03 m <br />) +
1 cm10 mm <br />0.01 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
1 cm10 mm <br />0.01 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
free +  and distinct +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
usually longer +
0.4 cm4 mm <br />0.004 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
15 cm150 mm <br />0.15 m <br /> (25 cm250 mm <br />0.25 m <br />) +
2 cm20 mm <br />0.02 m <br /> (15 cm150 mm <br />0.15 m <br />) +
Flowering summer. +
adnate +, free +, connate +  and distinct +
subpinnate +, palmate +  and subpalmate +
not flagelliform +
2 cm20 mm <br />0.02 m <br /> (40 cm400 mm <br />0.4 m <br />) +
Bull. Torrey Bot. Club +
not arillate +
0.8 cm8 mm <br />0.008 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
persistent +
free +  and distinct +
erect +  and spreading +
lanceolate +  and broadly ovate or deltate +
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
stiff +  and weak +
Illustrated +
free +  and distinct +
not rooting +
reddish +  and green +
(1.5-)2-4 times basal leaves +
ascending +  and nearly erect +
1 +  and many +
not flagelliform +
palmate +  and pinnate +
linear;ovate +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
deciduous +
distinct +
subapical +
filiform +
rough-thickened +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
stiff +  and weak +
not glaucous +
incised +, flat +  and more or less revolute +
Potentilla sect. Candidae +, Potentilla sect. Heptaphyllae +, Potentilla sect. Longipedunculatae +, Potentilla sect. Nuttallianae +, Potentilla sect. Pectinisectae +  and Potentilla sect. Permolles +
not fleshy-thickened +
Potentilla townsendii +
Potentilla sect. Graciles +
species +
blue-green +, green +  and grayish +
stiff +  and weak +
4 +  and 8 +
lanceolate +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
inconspicuous +
enlarged +
biennial +, annual +  and perennial +
herb +  and matted +