Difference between revisions of "Eriophyllum ambiguum"

(A. Gray) A. Gray

Proc. Amer. Acad. Arts 19: 26. 1883.

Endemic
Basionym: Lasthenia ambigua A. Gray Proc. Amer. Acad. Arts 6: 547. 1865
Treatment appears in FNA Volume 21. Treatment on page 356. Mentioned on page 5, 353, 354.
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Latest revision as of 18:32, 6 November 2020

Annuals, 5–30 cm. Stems decumbent to ascending. Leaves: blades oblong to oblanceolate, 5–40 mm, margins entire or toothed, plane (apices rounded to acute), faces lanate or tometose to tomentulose. Heads borne singly. Peduncles 1–8 cm. Involucres hemispheric to obconic, 5–6 mm diam. Phyllaries 6–10, ± connate. Ray florets 6–10; laminae yellow, 2–10 mm. Disc florets 10–30; corollas 1.3–3 mm (tubes cylindric, throats broadly funnelform, abruptly dilated, lobes glabrous or hairy, hairs 1-celled, not glandular; anther appendages deltate, widest at bases, not glandular). Cypselae 2.2–3 mm; pappi 0 or of 6–10 ± ovate to cuneate, entire, erose, or laciniate scales 0.1–0.5 mm.

Discussion

Varieties 2 (2 in the flora).

Selected References

None.

Key

1 Disc corolla lobes glabrous; pappi of 6–10 erose to laciniate scales 0.2–0.5 mm Eriophyllum ambiguum var. ambiguum
1 Disc corolla lobes hairy (hairs 1-celled); pappi 0, or of 6–10 entire scales 0.1–0.2 mm Eriophyllum ambiguum var. paleaceum