Ivesia arizonica var. arizonica

IllustratedEndemicConservation concern
Synonyms: Potentilla osterhoutii (A. Nelson) J. T. Howell Purpusia osterhoutii A. Nelson
Treatment appears in FNA Volume 9. Treatment on page 225. Mentioned on page 226.

Inflorescences 1–20 (–60) -flowered, 0.5–7 cm diam. Flowers: hypanthium campanulate, ± as deep as wide; petals yellow; anthers 0.6–1 mm.


Phenology: Flowering summer.
Habitat: Dry, rocky outcrops of calcareous or volcanic origin, usually in crevices of more or less vertical protected cliffs or large boulders, in sagebrush communities, conifer woodlands
Elevation: 1200–2400(–3400) m

Distribution

V9 336-distribution-map.jpg

Ariz., Calif., Nev., Utah.

Discussion

Of conservation concern.

Variety arizonica occurs as isolated populations from the Funeral and Grapevine mountains, Inyo County, California, to the Kolob Plateau of Washington County, Utah, and on the walls of the Grand Canyon and in the Oak Creek Canyon area of northern Arizona. Significant variation in vestiture, hypanthium depth, and other features occurs among these widely scattered population clusters. High-elevation plants (3100–3400 m) from the Troy Peak area of the Grant Range in northeastern Nye County, Nevada, are notably depauperate (0.2–0.5 dm) with leaflets 2–5 mm and petals 1.6–2.5 mm. All other populations occur below 2400 m.

Selected References

None.

Lower Taxa

None.

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

greenish white +  and light tan +
1.2mm +  and 2mm +
shorter than wide +  and longer +
oblong +  and narrowly ovate +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
not setose +
Barbara Ertter +  and James L. Reveal +
(Eastwood ex J. T. Howell) Ertter +
compound +  and simple +
opposite +  and alternate +
15 cm150 mm <br />0.15 m <br /> (20 cm200 mm <br />0.2 m <br />) +
2 cm20 mm <br />0.02 m <br /> (15 cm150 mm <br />0.15 m <br />) +
Purpusia arizonica +
20 cm200 mm <br />0.2 m <br /> (25 cm250 mm <br />0.25 m <br />) +
narrowly oblong +  and filiform planar +
0.5 cm5 mm <br />0.005 m <br /> (20 cm200 mm <br />0.2 m <br />) +
reduced +
elongate +
free +  and distinct +
branched +  and simple +
Ariz. +, Calif. +, Nev. +  and Utah. +
not +  and aggregated +
1200–2400(–3400) m +
0.09 cm0.9 mm <br />9.0e-4 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
unisexual +  and bisexual +
not +  and aggregated +
deciduous +
obliquely ovoid +  and reniform +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
loose +  and capitate +
Dry, rocky outcrops of calcareous or volcanic origin, usually in crevices of more or less vertical protected cliffs or large boulders, in sagebrush communities, conifer woodlands +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
1-20(-60)-flowered +
0.5 cm5 mm <br />0.005 m <br /> (7 cm70 mm <br />0.07 m <br />) +
crassinucellate +
1.5 cm15 mm <br />0.015 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
opposite +  and alternate +
winter-marcescent +
deciduous +  and persistent +
separate +  and overlapping +
, +  and distinct +
distinguishable +
lobed +  and toothed +
oblanceolate +  and oval or obovate +
verticillate +
toothed +, unlobed +  and lobed +
inferior +  and superior +
clustered +, biseriate +  and superposed +
0.5 cm5 mm <br />0.005 m <br /> (3 cm30 mm <br />0.03 m <br />) +
0 (?) +  and 4 (?) +
0.16 cm1.6 mm <br />0.0016 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
free +  and distinct +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
3 cm30 mm <br />0.03 m <br /> (10 cm100 mm <br />0.1 m <br />) +
Flowering summer. +
adnate +, free +, connate +  and distinct +
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 +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Illustrated +, Endemic +  and Conservation concern +
free +  and distinct +
branched +  and simple +
reddish +, grayish +  and green +
prostrate +  and ascending +
2 +  and 20 +
palmate +  and pinnate +
deciduous +
distinct +
subterminal +
filiform +
rough-thickened +
0.09 cm0.9 mm <br />9.0e-4 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
short-pilose +
Potentilla osterhoutii +  and Purpusia osterhoutii +
not fusiform +
Ivesia arizonica var. arizonica +
Ivesia arizonica +
variety +
7 +  and 11 +
inconspicuous +
stipelike +
enlarged +
glabrate +  and sparsely densely glandular-puberulent +