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 18:16, 18 September 2019 by FNA>Volume Importer

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.
... more about "Horkelia wilderae"
Barbara Ertter +  and James L. Reveal +
Parish +
Barton Flats or Wilder’s horkelia +
1900–3000 m +
Chaparral flats, hills, adjacent to montane conifer woodlands +
Flowering summer. +
Conservation concern +  and Endemic +
Potentilla parryi var. wilderae +  and P. wilderae +
Horkelia wilderae +
Horkelia sect. Parryae +
species +