Difference between revisions of "Ericameria cuneata"

(A. Gray) McClatchie

Erythea 2: 124. 1894.

Illustrated
Basionym: Haplopappus cuneatus A. Gray Proc. Amer. Acad. Arts 8: 635. 1873 (as Aplopappus)
Treatment appears in FNA Volume 20. Treatment on page 57. Mentioned on page 52, 62.
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Latest revision as of 18:32, 6 November 2020

Plants 10–100 cm. Stems spreading to ascending or erect, green when young, highly branched, glabrous, gland-dotted (sometimes in pits), resinous. Leaves ascending-spreading; blades cuneate to spatulate, 2–25 × 2–16 mm, midnerves evident or faint, (margins usually flat) apices rounded, obtuse, or retuse, sometimes mucronate, faces glabrous, gland-dotted (in pits), thickly resinous; axillary leaf fascicles rarely present. Heads usually borne singly, sometimes in rounded, cymiform arrays (to 5 × 8 cm). Peduncles 2–10 mm (bracts 0–10+, scalelike). Involucres turbinate to narrowly campanulate, 6–12.5 × 4–14 mm. Phyllaries 20–60 in 3–7 series, tan, ovate to lanceolate, 2–6 × 0.5–2.5 mm, unequal, mostly chartaceous, sometimes each with herbaceous subapical patch, midnerves evident on proximal 1/2 or throughout, subapical resin ducts 0 or slightly darker, thickened and expanded, (margins membranous, weakly lacerate) apices acute to acuminate or obtuse, abaxial faces glabrous. Ray florets 0(–7); laminae 3–4.3 × 1–1.5 mm. Disc florets 7–70; corollas ca. 5.5 mm. Cypselae tan to brown, turbinate, 2.5–3 mm, sericeous to villous; pappi off-white to brown, 6.5–8 mm. 2n = 18.

Distribution

V20-86-distribution-map.gif

Ariz., Calif., N.Mex., Nev., nw Mexico.

Discussion

Varieties 3 (3 in the flora).

Variety spathulata extends into Mexico. It is reported to hybridize with Ericameria nauseosa.

Key

1 Disc florets 36–70 (San Diego County, California) Ericameria cuneata var. macrocephala
1 Disc florets 7–33 > 2
2 Leaves sessile, blades cuneate, largest 3–14(–18) × 2–9(–12) Ericameria cuneata var. cuneata
2 Leaves petiolate, blades spatulate, largest (9–)12–25 × 4–16 Ericameria cuneata var. spathulata
... more about "Ericameria cuneata"
Lowell E. Urbatsch +, Loran C. Anderson +, Roland P. Roberts +  and Kurt M. Neubig +
(A. Gray) McClatchie +
Haplopappus cuneatus +
Ariz. +, Calif. +, N.Mex. +, Nev. +  and nw Mexico. +
urbatsch1976a +
Illustrated +
Haplopappus sect. Asiris +, Haplopappus sect. Ericameria +, Haplopappus sect. Macronema +  and Haplopappus sect. Stenotopsis +
Ericameria cuneata +
Ericameria +
species +