Flora of North America species comparison

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Eriophyllum confertiflorum

Eriophyllum nubigenum

golden-yarrow, yellow-yarrow

Yosemite woolly sunflower
Habit Shrubs, 20–50(–100) cm. Annuals, 5–15 cm.
Stems

erect (woolly).

ascending.
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).

blades oblanceolate, 1–2 cm, margins entire, plane (apices acute), faces woolly.
Peduncles

mostly 0–2.5(–9) cm.

± 1 cm.
Involucres

campanulate, 3–7 mm diam.

cylindric, 3–4+ mm diam.
Ray florets

0 or 4–6(–8);

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

4–6;

laminae yellow, ± 1 mm (inconspicuous).
Disc florets

10–75;

corollas 2–4 mm.

10–20;

corollas ± 2 mm (tubes cylindric, throats broadly funnelform, abruptly 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).

4–6, distinct.
Heads

(3–)4–7(–10) or 10–30+ per array.

borne singly or in loose arrays.
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 8–10 lanceolate to spatulate (± unequal) scales 0.5–1.5 mm.
2n

= 14.

Eriophyllum confertiflorum

Eriophyllum nubigenum
Phenology Flowering Jun–Jul.
Habitat Gravelly or rocky openings, yellow pine or red fir forests
Elevation 1800–2500 m (5900–8200 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. 356.
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. congdonii, E. jepsonii, E. lanatum, E. lanosum, E. latilobum, E. mohavense, E. multicaule, 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) Greene ex A. Gray: Proc. Amer. Acad. Arts 19: 25. (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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