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golden-yarrow, yellow-yarrow

Congdon's woolly sunflower

Habit Shrubs, 20–50(–100) cm. Annuals, 10–30 cm.
Stems

erect (woolly).

± spreading.

Leaves

(proximal usually mostly alternate): blades cuneate to obovate, 0.5–5 cm (the longer 1–2-pinnately lobed, lobes linear, the shorter 3–5-lobed or -toothed), ultimate margins entire, revolute, abaxial faces woolly, adaxial usually glabrate (distal leaves gradually reduced in size and lobing).

oblanceolate, 10–40 mm, rarely 2–3-lobed, ultimate margins usually entire, plane (apices acute), faces ± woolly.

Peduncles

mostly 0–2.5(–9) cm.

3–10 cm.

Involucres

campanulate, 3–7 mm diam.

campanulate, 3–5 mm diam.

Ray florets

0 or 4–6(–8);

laminae golden yellow, 2–5 (× 1.5–3) mm.

8–10;

laminae yellow, 3–5 mm.

Disc florets

10–75;

corollas 2–4 mm.

10–30;

corollas 2–3 mm (tubes cylindric, throats funnelform, gradually dilated, lobes not glandular; anther appendages deltate, glandular).

Phyllaries

4–7, distinct or connate at bases (broadly elliptic or ovate, carinate, apices obtuse or acute).

8–10, distinct.

Heads

(3–)4–7(–10) or 10–30+ per array.

borne singly.

Cypselae

1.5–3.5 mm;

pappi of 2–14 cuneate to oblanceolate (subequal), erose scales 0.5–1.3 mm.

2.5–3 mm;

pappi of 3–5 ± spatulate scales 0.5–1 mm plus 3–5 lanceolate scales 1.5–2 mm.

2n

= 14.

Eriophyllum confertiflorum

Eriophyllum congdonii

Phenology Flowering Mar–Jun.
Habitat Rocky openings, foothill woodlands or yellow pine forests
Elevation 500–1900 m (1600–6200 ft)
Distribution
from FNA
CA; Mexico
[WildflowerSearch map]
[BONAP county map]
from FNA
CA
[BONAP county map]
Discussion

Varieties 2 (2 in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Of conservation concern.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Key
1. Heads 10–30+ per array; peduncles 0–1(–2) cm; involucres 3–5 mm diam.; disc corollas 2–3 mm
var. confertiflorum
1. Heads (3–)4–7(–10) per array; peduncles 0–2.5(–9) cm; involucres 5–7 mm diam.; disc corollas 3.5–4 mm
var. tanacetiflorum
Source FNA vol. 21, p. 361. FNA vol. 21, p. 357.
Parent taxa Asteraceae > tribe Heliantheae > subtribe Baeriinae > Eriophyllum Asteraceae > tribe Heliantheae > subtribe Baeriinae > Eriophyllum
Sibling taxa
E. ambiguum, E. congdonii, E. jepsonii, E. lanatum, E. lanosum, E. latilobum, E. mohavense, E. multicaule, E. nubigenum, E. pringlei, E. staechadifolium, E. wallacei
E. ambiguum, E. confertiflorum, E. jepsonii, E. lanatum, E. lanosum, E. latilobum, E. mohavense, E. multicaule, E. nubigenum, E. pringlei, E. staechadifolium, E. wallacei
Subordinate taxa
E. confertiflorum var. confertiflorum, E. confertiflorum var. tanacetiflorum
Synonyms Bahia confertiflora
Name authority (de Candolle) A. Gray: Proc. Amer. Acad. Arts 19: 25. (1883) Brandegee: Bot. Gaz. 27: 449. (1899)
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