Erigeron lobatus

A. Nelson

Amer. J. Bot. 21: 580. 1934.

Common names: Lobed fleabane
Treatment appears in FNA Volume 20. Treatment on page 338. Mentioned on page 262, 264, 340.

Annuals, mostly 10–40(–50) cm; taprooted. Stems erect, sparsely hispido-pilose (hairs spreading, straight, 0.6–2 mm), densely stipitate-glandular. Leaves basal (persistent) and cauline; basal and proximal cauline blades obovate-spatulate, 50–100(–150) × 4–25 mm, cauline gradually reduced (lobing distally), margins pinnatifid or bipinnatifid with (1–)2–4 pairs of rounded to acute lobes, faces sparsely hispido-pilose, stipitate-glandular. Heads 1–5 (peduncles long, ebracteate). Involucres 3–4 × 6–10 mm. Phyllaries in 2–3 series (sometimes basally connate, broad, thin) sparsely hispido-pilose, stipitate glandular. Ray florets 85–110; corollas white, drying dark blue, 6–9 mm, laminae not coiling or reflexing. Disc corollas 1.8–2.9 mm. Cypselae 1.2–1.4 mm, 2-nerved, faces sparsely strigose; pappi: outer of scales (sometimes connate, forming crowns), inner of 11–12 bristles.

Phenology: Flowering (Jan–)Feb–May(–Oct).
Habitat: Stream banks, sandy lake shores, dry washes, desert or riparian scrub, sometime with creosote bush
Elevation: 300–1200 m



Ariz., Calif., Nev., Mexico (Sonora).


Erigeron lobatus is characterized by persistent basal and proximal cauline leaves with rounded to acute lobes, vestiture of stipitate glands and sparse, spreading, hispido-pilose hairs, heads on relatively long, ebracteate peduncles, and broad, thin phyllaries. Erigeron divergens often is similar; its glandularity is not stipitate and its nonglandular hairs are shorter and denser.

Selected References


Lower Taxa

... more about "Erigeron lobatus"
Guy L. Nesom +
A. Nelson +
Lobed fleabane +
Ariz. +, Calif. +, Nev. +  and Mexico (Sonora). +
300–1200 m +
Stream banks, sandy lake shores, dry washes, desert or riparian scrub, sometime with creosote bush +
Flowering (Jan–)Feb–May(–Oct). +
Amer. J. Bot. +
Illustrated +
Achaetogeron +  and Trimorpha +
Erigeron lobatus +
Erigeron +
species +