Erigeron sanctarum

S. Watson

Proc. Amer. Acad. Arts 24: 83. 1889.

Common names: Saints fleabane
Endemic
Treatment appears in FNA Volume 20. Treatment on page 318. Mentioned on page 266.

Perennials, 5–40 cm; rhizomatous (fibrous-rooted) or perhaps obscurely taprooted (taproots/primary axes not evident in collections), forming systems of relatively slender rhizomes or rhizomelike caudex branches. Stems erect (bases greenish), sparsely hirsuto-villous (hairs usually retrorse), eglandular. Leaves basal (persistent) and cauline; (bases greenish) proximal blades oblanceolate to oblanceolate-spatulate, 20–50 × 3–10 mm, gradually reduced distally, becoming linear (rarely slightly subclasping), margins entire, faces sparsely villous-hirsute, eglandular. Heads 1(–3). Involucres 6–9 × 12–17 mm. Phyllaries in 3–4 series, densely villous to hirsuto-villous, eglandular. Ray florets 45–90; corollas blue to purple, 7–13 mm, laminae not coiling or reflexing. Disc corollas 5–6.5 mm. Cypselae 1.5–2.2 mm, 2-nerved, faces sparsely strigose; pappi: outer of setae, inner of 18–25 bristles.


Phenology: Flowering Mar–Jun.
Habitat: Usually in sandy sites, grassy openings in pine woods, burned areas on sandy mesas and ridges, commonly in sagebrush, chaparral, and coastal scrub, often with Adenostoma, Ceanothus
Elevation: 50–400 m

Discussion

An unequivocal observation of the mode of perennation of this species has not been made.

Selected References

None.

Lower Taxa

None.
... more about "Erigeron sanctarum"
Guy L. Nesom +
S. Watson +
Saints fleabane +
50–400 m +
Usually in sandy sites, grassy openings in pine woods, burned areas on sandy mesas and ridges, commonly in sagebrush, chaparral, and coastal scrub, often with Adenostoma, Ceanothus +
Flowering Mar–Jun. +
Proc. Amer. Acad. Arts +
Achaetogeron +  and Trimorpha +
Erigeron sanctarum +
Erigeron +
species +