Erigeron cronquistii

Maguire

Brittonia 5: 201. 1944.

Common names: Cronquist’s fleabane
EndemicConservation concern
Treatment appears in FNA Volume 20. Treatment on page 305. Mentioned on page 275, 306.

Perennials, 1.5–7 cm (cespitose); taprooted, caudices multicipital or branches relatively short and thick. Stems erect (greenish), sparsely and closely strigose, eglandular. Leaves mostly basal (persistent, petioles 2/3–3/4 leaf lengths); blades (greenish) narrowly oblanceolate to oblanceolate-spatulate, (5–)10–40 × 2–4 mm, margins entire (apices rounded to obtuse), faces sparsely strigose, eglandular. Heads 1(–2). Involucres 3–5 × 5–8 mm. Phyllaries in 2–3 series (often purplish), sparsely to moderately hirsute, sparsely to moderately minutely glandular (medially and near apices). Ray florets 10–20(–25); corollas white or light pink, 5–6 mm, laminae not coiling or reflexing. Disc corollas 2.4–3.4 mm. Cypselae 1.5–1.8 mm, 2-nerved, faces sparsely strigose; pappi: outer of setae, inner of 12–20 bristles. 2n = 18.


Phenology: Flowering May–Jul.
Habitat: Crevices, ledges, and erosion pockets in limestone cliffs, Douglas fir, aspen, mountain brush
Elevation: 1600–3000 m

Discussion

Of conservation concern.

Selected References

None.

Lower Taxa

None.
... more about "Erigeron cronquistii"
Guy L. Nesom +
Maguire +
Cronquist’s fleabane +
1600–3000 m +
Crevices, ledges, and erosion pockets in limestone cliffs, Douglas fir, aspen, mountain brush +
Flowering May–Jul. +
Endemic +  and Conservation concern +
Achaetogeron +  and Trimorpha +
Erigeron cronquistii +
Erigeron +
species +