Flora of North America species comparison

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Eriophyllum ambiguum

annual woolly sunflower, beautiful woolly sunflower
Habit 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.
Peduncles

1–8 cm.
Involucres

hemispheric to obconic, 5–6 mm diam.
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).
Phyllaries

6–10, ± connate.
Heads

borne singly.
Cypselae

2.2–3 mm;

pappi 0 or of 6–10 ± ovate to cuneate, entire, erose, or laciniate scales 0.1–0.5 mm.

Eriophyllum ambiguum
Distribution
from FNA
CA; NV
[WildflowerSearch map]
[BONAP county map]
Discussion

Varieties 2 (2 in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Key
1. Disc corolla lobes glabrous; pappi of 6–10 erose to laciniate scales 0.2–0.5 mm
var. ambiguum
1. Disc corolla lobes hairy (hairs 1-celled); pappi 0, or of 6–10 entire scales 0.1–0.2 mm
var. paleaceum
Source FNA vol. 21, p. 356.
Parent taxa Asteraceae > tribe Heliantheae > subtribe Baeriinae > Eriophyllum
Sibling taxa
E. confertiflorum, E. congdonii, E. jepsonii, E. lanatum, E. lanosum, E. latilobum, E. mohavense, E. multicaule, E. nubigenum, E. pringlei, E. staechadifolium, E. wallacei
Subordinate taxa
E. ambiguum var. ambiguum, E. ambiguum var. paleaceum
Synonyms Lasthenia ambigua
Name authority (A. Gray) A. Gray: Proc. Amer. Acad. Arts 19: 26. (1883)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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