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white Easter bonnets, white easterbonnets or woolly daisy, white woolly daisy

San Mateo woolly sunflower

Habit Annuals, 3–15 cm. Perennials or subshrubs, 30–60(–90) cm.
Stems

decumbent to ascending.

erect (woolly).

Leaves

blades oblanceolate to linear, 5–20 mm, rarely lobed, ultimate margins, usually entire, plane (apices acute), faces sparsely woolly.

(proximal alternate): blades rhombic to obovate, 2–6 cm, 1-pinnately lobed (lobes 3–5, ± triangular), ultimate margins entire, revolute, abaxial faces loosely woolly, adaxial glabrate (distal leaves gradually reduced in size and lobing).

Peduncles

1–5 cm.

mostly 2–7 cm.

Involucres

campanulate to obconic, 3–5 mm diam.

broadly campanulate, 5–6(–7) mm diam.

Ray florets

8–10;

laminae white with red veins, 3–5 mm.

(6–)8–10(–13);

laminae yellow, 6–10 (× 4.5–5) mm.

Disc florets

10–20;

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

40–75;

corollas 3–4.5 mm.

Phyllaries

8–10, distinct.

6–10, distinct (ovate, carinate, apices acute).

Heads

borne singly.

2–5(–10) in corymbiform arrays.

Cypselae

2.5–4.5 mm;

pappi of 5 subulate scales 1.5–2.5 mm plus 4–5 oblong scales ± 0.5 mm.

2–3 mm;

pappi of 4 cuneate to oblanceolate scales 0.3–1 mm alternating with 4 shorter scales (in disc cypselae, disc pappi longer than ray pappi).

2n

= 8.

= 32.

Eriophyllum lanosum

Eriophyllum latilobum

Phenology Flowering Feb–May. Flowering Apr–Jun.
Habitat Sandy or gravelly openings, desert scrublands Usually shady sites, oak woodlands
Elevation 70–1400 m (200–4600 ft) 100–200 m (300–700 ft)
Distribution
from FNA
AZ; CA; NM; NV; UT; Mexico (Baja California)
[WildflowerSearch map]
[BONAP county map]
from FNA
CA
[BONAP county map]
Discussion

Of conservation concern.

Eriophyllum latilobum combines characteristics of E. confertiflorum var. confertiflorum, with which it sometimes mingles, and E. lanatum var. arachnoideum. It may have originated by hybridization between them (L. Constance 1937; P. A. Munz 1959).

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

Source FNA vol. 21, p. 355. FNA vol. 21, p. 362.
Parent taxa Asteraceae > tribe Heliantheae > subtribe Baeriinae > Eriophyllum Asteraceae > tribe Heliantheae > subtribe Baeriinae > Eriophyllum
Sibling taxa
E. ambiguum, E. confertiflorum, E. congdonii, E. jepsonii, E. lanatum, 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. mohavense, E. multicaule, E. nubigenum, E. pringlei, E. staechadifolium, E. wallacei
Synonyms Burrielia lanosa, Antheropeas lanosum
Name authority (A. Gray) A. Gray: Proc. Amer. Acad. Arts 19: 25. (1883) Rydberg: in N. L. Britton et al., N. Amer. Fl. 34: 94. (1914)
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