Potentilla ovina var. ovina

Endemic
Synonyms: Potentilla bipinnatifida var. glabrata (Lehmann) Kohli & Packer P. glabrella Rydberg P. monidensis A. Nelson P. pensylvanica var. glabrata (Lehmann) S. Watson P. wyomingensis A. Nelson
Treatment appears in FNA Volume 9. Treatment on page 172. Mentioned on page 171, 181, 214, 216.

Stems: lengths (1–) 1.5–2.5 (–3) times basal leaves. Basal leaves (1.5–) 2–8 (–10) × 0.7–2 cm; petiole (0.5–) 1–2 (–3) cm; lateral leaflets on distal 1/2 (–2/3) of leaf axis, ± overlapping, distal leaflets ± obovate, (0.3–) 0.5–1.2 (–2.5) cm, ± whole margin pinnately incised 3/4+ to midvein, teeth 4–9 (–11), linear, 2–6 (–9) × 1 mm, surfaces grayish, rarely green, hairs sparse to abundant, 1–2 mm. Achenes 1.8–2 mm.


Phenology: Flowering summer.
Habitat: Fellfields, alpine ridges, rocky slopes, dry hillsides
Elevation: 1500–3800 m

Distribution

V9 249-distribution-map.jpg

Alta., B.C., Colo., Idaho, Mont., Nev., Oreg., Utah, Wyo.

Discussion

Typical var. ovina is a tufted, grayish plant with the leaflets divided (pinnately on distal leaflets, palmately or unevenly on proximal leaflets) nearly to the midvein into linear teeth with prominent apical hair tufts. Leaflets are often folded and closely overlapping, giving the leaves a distinctive silvery cylindric appearance especially when drought-stressed. Populations around Yellowstone National Park, in particular the type of Potentilla wyomingensis, are often larger and less hairy, with larger flowers in more open inflorescences. Some collections from southeastern Idaho and southwestern Wyoming are transitional between var. ovina and P. multisecta (sect. Concinnae); their optimal placement has yet to be determined.

The distribution of var. ovina given here largely matches that indicated by B. C. Johnston (1980), with the addition of southeastern British Columbia based on H. J. Scoggan (1978–1979, part 3). No record has been found to support the inclusion of Saskatchewan in the distribution, as done by C. L. Hitchcock and A. Cronquist (1961b). In Oregon, var. ovina occurs only as depauperate plants in the Wallowa Mountains; reports from Steens Mountain are mostly based on Potentilla versicolor. In Nevada, var. ovina is confirmed only from the Schell Creek Range, White Pine County. Not included here are collections from Alaska and Yukon that probably represent an undescribed taxon.

Selected References

None.

Lower Taxa

None.

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

not carunculate +
smooth +  and faintly rugose +
1.8mm +  and 2mm +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
Barbara Ertter +
J. M. Macoun +
compound +  and simple +
8 cm80 mm <br />0.08 m <br /> (10 cm100 mm <br />0.1 m <br />) +
2 cm20 mm <br />0.02 m <br /> (8 cm80 mm <br />0.08 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Potentilla diversifolia var. pinnatisecta +
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 +
10 cm100 mm <br />0.1 m <br /> (13 cm130 mm <br />0.13 m <br />) +
1.2 cm12 mm <br />0.012 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
3.5 cm35 mm <br />0.035 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 />) +
0.7 cm7 mm <br />0.007 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
Alta. +, B.C. +, Colo. +, Idaho +, Mont. +, Nev. +, Oreg. +, Utah +  and Wyo. +
not +  and aggregated +
1500–3800 m +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
linear-lanceolate +  and narrowly elliptic +
1 cm10 mm <br />0.01 m <br /> (?) +
0.1 cm1 mm <br />0.001 m <br /> (0.25 cm2.5 mm <br />0.0025 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 +  and obscured +
Fellfields, alpine ridges, rocky slopes, dry hillsides +
stoloniferous +  and short-rhizomatous +
straight +
sparse +  and dense +
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 />) +
not 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 />) +
0.3 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 />) +
cymose +  and (1-)2-11(-20)-flowered +
crassinucellate +
bipinnate +, odd-pinnate +, subpalmate +, palmate +  and ternate +
opposite +  and alternate +
marcescent +
well-developed +
persistent +
cauline +  and basal +
reduced +
not +  and overlapping +
oblanceolate +  and obovate oblong cuneate flabellate or elliptic +
linear +  and oblanceolate +
palmate +  and pinnate +
inferior +  and superior +
clustered +, biseriate +  and superposed +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
1 cm10 mm <br />0.01 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
free +  and distinct +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 m <br />) +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Flowering summer. +
adnate +, free +, connate +  and distinct +
less separate +  and more or less overlapping +
2 cm20 mm <br />0.02 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (2 cm20 mm <br />0.02 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
20 cm200 mm <br />0.2 m <br /> (32 cm320 mm <br />0.32 m <br />) +
2 cm20 mm <br />0.02 m <br /> (20 cm200 mm <br />0.2 m <br />) +
often not much longer +
Canad. Rec. Sci. +
not arillate +
0.55 cm5.5 mm <br />0.0055 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
persistent +
free +  and distinct +
erect +  and spreading +
lanceolate +  and broadly ovate or deltate +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.55 cm5.5 mm <br />0.0055 m <br />) +
free +  and distinct +
not rooting +
reddish +  and green +
(1-)1.5-2.5(-3) times basal leaves +
prostrate +  and ascending +
prostrate to decumbent +
1 +  and many +
not flagelliform +
palmate +  and pinnate +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
deciduous +
distinct +
subapical +
papillate-swollen +  and filiform +
rough-thickened +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
green +  and grayish +
not glaucous +
Potentilla bipinnatifida var. glabrata +, P. glabrella +, P. monidensis +, P. pensylvanica var. glabrata +  and P. wyomingensis +
fleshy-thickened +
Potentilla ovina var. ovina +
Potentilla ovina +
variety +
0.6 cm6 mm <br />0.006 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
4 +  and 9 +
1 cm10 mm <br />0.01 m <br /> (?) +
inconspicuous +
enlarged +
0.7 cm7 mm <br />0.007 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
biennial +, annual +  and perennial +
plant +  and matted +