Horkelia wilderae

Parish

Bot. Gaz. 38: 460. 1904.

Common names: Barton Flats or Wilder’s horkelia
Conservation concernEndemic
Synonyms: Potentilla parryi var. wilderae (Parish) Jepson P. wilderae (Parish) Munz & I. M. Johnston
Treatment appears in FNA Volume 9. Treatment on page 258.
Revision as of 13:07, 30 July 2020 by imported>Volume Importer
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Plants forming rosettes. Stems prostrate to decumbent, (0.5–) 1–2.5 dm. Basal leaves (3–) 4–8 (–10) × 0.8–1.8 cm; leaflets (3 or) 4–7 per side, narrowly to broadly obovate, 3–10 × 3–10 mm, ± as wide as long, divided 1/2–3/4 to midrib into 5–15 narrowly oblong teeth or lobes, pilose especially on midveins and margins. Cauline leaves (0–) 1 (–2). Pedicels 3–15 mm. Flowers 5 mm diam.; epicalyx bractlets lanceolate to ovate, 0.8–1.7 × 0.3–0.7 mm, 1/2–2/3 length of sepals; hypanthium 1–1.5 × 1.5–3 mm, ± 1/2 as deep as wide; sepals reflexed, broadly elliptic to broadly ovate, 1.7–2.5 mm; petals oblanceolate to oblong, 2–3 × 1–2 mm, apex rounded; filaments 0.5–1 × 0.3–0.8 mm, anthers 0.4–0.5 mm; carpels 3 or 4; styles 1–2 mm. Achenes tan, 1.8–2.2 mm, coarsely rugose.


Phenology: Flowering summer.
Habitat: Chaparral flats, hills, adjacent to montane conifer woodlands
Elevation: 1900–3000 m

Discussion

Of conservation concern.

Horkelia wilderae is known from the Barton Flats area of the eastern San Bernardino Mountains, San Bernardino County.

Some morphological characteristics (small flowers, reflexed sepals) may indicate a closer relation to Horkelia fusca than to H. parryi.

Selected References

None.

Lower Taxa

None.

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... more about "Horkelia wilderae"
1.8mm +  and 2.2mm +
at-least slightly longer than wide +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
rounded +
Barbara Ertter +  and James L. Reveal +
Parish +
compound +  and simple +
opposite +  and alternate +
8 cm80 mm <br />0.08 m <br /> (10 cm100 mm <br />0.1 m <br />) +
4 cm40 mm <br />0.04 m <br /> (8 cm80 mm <br />0.08 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
flattened +
30 cm300 mm <br />0.3 m <br /> (40 cm400 mm <br />0.4 m <br />) +
planar +  and cylindric +
2 cm20 mm <br />0.02 m <br /> (30 cm300 mm <br />0.3 m <br />) +
coriaceous +
reduced +
free +  and distinct +
Barton Flats or Wilder’s horkelia +
open to congested +
not +  and aggregated +
1900–3000 m +
lanceolate +  and ovate +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
flattened +
0.3mm;0.8mm +
5 cm50 mm <br />0.05 m <br /> (?) +
unisexual +  and bisexual +
not +  and aggregated +
obliquely ovoid +  and reniform +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Chaparral flats, hills, adjacent to montane conifer woodlands +
0.1 cm1 mm <br />0.001 m <br /> (0.55 cm5.5 mm <br />0.0055 m <br />) +
wide;1.5mm;3mm +
crassinucellate +
opposite +  and alternate +
marcescent +
winter-persistent +
0.3 cm3 mm <br />0.003 m <br /> (1 cm10 mm <br />0.01 m <br />) +
divided +  and obovate +
0.3 cm3 mm <br />0.003 m <br /> (?) +  and 1 cm10 mm <br />0.01 m <br /> (?) +
palmate +  and pinnate +
shallowly toothed +  and deeply divided +
inferior +  and superior +
clustered +, biseriate +  and superposed +
recurved +  and reflexed +
0.3 cm3 mm <br />0.003 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
0 (?) +  and 4 (?) +
free +  and distinct +
oblanceolate;oblong +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Flowering summer. +
adnate +, free +, connate +  and distinct +
not arillate +
linear;filiform +
persistent +
free +  and distinct +
broadly elliptic +  and broadly ovate +
0.17 cm1.7 mm <br />0.0017 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
Conservation concern +  and Endemic +
free +  and distinct +
branched +  and simple +
stramineous +, reddish +  and green +
prostrate +  and decumbent +
prostrate +  and erect +
1 +  and 10 +
palmate +  and pinnate +
deciduous +
distinct +
subterminal +
filiform +
rough-thickened +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Potentilla parryi var. wilderae +  and P. wilderae +
Horkelia wilderae +
Horkelia sect. Parryae +
species +
5 (?) +  and 15 (?) +
inconspicuous +
enlarged +
hairy +  and inconspicuously conspicuously glandular +