Ivesia baileyi var. beneolens

(A. Nelson & J. F. Macbride) Ertter

Syst. Bot. 14: 236. 1989.

Common names: Owyhee ivesia
Endemic
Basionym: Horkelia beneolens A. Nelson & J. F. Macbride Bot. Gaz. 55: 374. 1913
Treatment appears in FNA Volume 9. Treatment on page 226. Mentioned on page 227, 228.

Basal leaves: sheathing base sparsely glandular abaxially, otherwise glabrous. Pedicels 5–6+ mm at flowering, to 15 (–30) mm in fruit. Flowers 5–40, 7–10 mm diam.; epicalyx bractlets narrowly lanceolate, 0.8–1 mm, usually less than 1/2 as long as sepals; hypanthium interior pale green or cream to maroon; sepals (1.2–) 1.5–2.5 mm; petals white; filaments white, anther margins reddish. Achenes ± 2 mm, rugose. 2n = 28.


Phenology: Flowering summer.
Habitat: Crevices on north-facing cliffs or similarly protected sites in canyons and rocky outcrops mainly of volcanic origin, in sagebrush communities, conifer woodlands
Elevation: 1000–2600 m

Distribution

V9 340-distribution-map.jpg

Calif., Idaho, Nev., Oreg.

Discussion

Variety beneolens occurs from Harney and Malheur counties, Oregon, to Modoc County, California, and to Elmore, Owyhee, and Twin Falls counties, Idaho, and Elko and Humboldt counties, Nevada. Plants are particularly common on the vertical sides of the river canyons that cut through the Owyhee Plateau. The variety also barely enters the Idaho Batholith on volcanic intrusions along the South Fork of the Boise River.

Selected References

None.

Lower Taxa

None.

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

greenish white +  and light tan +
shorter than wide +  and longer +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
not setose +
Barbara Ertter +  and James L. Reveal +
(A. Nelson & J. F. Macbride) Ertter +
compound +  and simple +
opposite +  and alternate +
12 cm120 mm <br />0.12 m <br /> (18 cm180 mm <br />0.18 m <br />) +
3 cm30 mm <br />0.03 m <br /> (12 cm120 mm <br />0.12 m <br />) +
Horkelia beneolens +
20 cm200 mm <br />0.2 m <br /> (25 cm250 mm <br />0.25 m <br />) +
narrowly oblong +  and filiform planar +
reduced +
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 +
Owyhee ivesia +
Calif. +, Idaho +, Nev. +  and Oreg. +
not +  and aggregated +
1000–2600 m +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.11 cm1.1 mm <br />0.0011 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (1 cm10 mm <br />0.01 m <br />) +
5 +  and 40 +
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 +
Crevices on north-facing cliffs or similarly protected sites in canyons and rocky outcrops mainly of volcanic origin, in sagebrush communities, conifer woodlands +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
cream +  and maroon +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
open +  and (1-)5-40-flowered +
1.5 cm15 mm <br />0.015 m <br /> (8 cm80 mm <br />0.08 m <br />) +
crassinucellate +
separate +  and slightly overlapping +
1.5 cm15 mm <br />0.015 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
0.4 cm4 mm <br />0.004 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 +
1.5 cm15 mm <br />0.015 m <br /> (3 cm30 mm <br />0.03 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0 (?) +  and 4 (?) +
free +  and distinct +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
1 cm10 mm <br />0.01 m <br /> (8 cm80 mm <br />0.08 m <br />) +
Flowering summer. +
adnate +, free +, connate +  and distinct +
not arillate +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
persistent +
free +  and distinct +
erect +  and spreading +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
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 />) +
hirsute +  and short-pilose +
Potentilla baileyi +
not fusiform +
Ivesia baileyi var. beneolens +
Ivesia baileyi +
variety +
3 +  and 11 +
ovate +  and oblanceolate +
inconspicuous +
stipelike +, elongate +, less flat +  and conic or turbinate +
enlarged +
glabrate +  and sparsely densely glandular-puberulent +