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Ratibida columnifera (Nutt. ) Wooton &. Standl.
PRAIRIE CONEFLOWER
Upright prairie coneflower

Life   Plantae   Dicotyledoneae   Asteraceae   Ratibida

Ratibida columnifera
© Copyright Jennifer Larson 2012 · 2
Ratibida columnifera

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Ratibida columnifera, flower
© Kay Yatskievych, 2003 · 1
Ratibida columnifera, flower

Associates · map
FamilyScientific name @ source (records)
Andrenidae  Andrena rudbeckiae @ AMNH_BEE (1); B_AW (1)

Andrena runcinatae @ AMNH_BEE (1)

Perdita lepachidis @ UCRC_ENT (5)

Pseudopanurgus albitarsis @ B_AW (1)
Apidae  Holcopasites heliopsis @ AMNH_BEE (2)

Melissodes perlusa @ AMNH_BEE (3)

Melissodes subillatus @ B_AW (2)

Melissodes wheeleri @ AMNH_BEE (3)

Melissodes @ B_AW (1)
Colletidae  Colletes rufocinctus @ AMNH_BEE (1)
Entylomataceae  Entyloma compositarum @ BPI (1)

Entyloma polysporum @ BPI (1)
Halictidae  Agapostemon texanus @ AMNH_BEE (2)

Dieunomia bolliana @ UCRC_ENT (1)

Halictus ligatus @ AMNH_BEE (13); B_AW (5)

Lasioglossum leucocomum @ AMNH_BEE (2)

Lasioglossum lineatulum @ AMNH_BEE (1)

Lasioglossum pectorale @ AMNH_BEE (2)

Lasioglossum perpunctatum @ AMNH_BEE (1)

Lasioglossum semicaeruleum @ AMNH_BEE (7)

Lasioglossum @ B_AW (1)
Megachilidae  Coelioxys texana @ AMNH_BEE (1)

Megachile texana @ AMNH_BEE (1)
Mycosphaerellaceae  Septoria lepachydis @ BPI (1)
Phaeosphaeriaceae  Leptosphaeria dumetorum @ BPI (1)

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FNA | Family List | FNA Vol. 21 | Asteraceae | Ratibida

1. Ratibida columnifera (Nuttall) Wooton & Standley, Contr. U.S. Natl. Herb. 19: 706. 1915.

Upright prairie coneflower, redspike Mexican-hat.

Rudbeckia columnifera Nuttall, Cat. Pl. Upper Louisiana, no. 75. 1813; Ratibida columnaris (Sims) D. Don

Perennials, to 105+ cm; taprooted. Leaves 2—15+ × 0.8—6 cm, 1—2-pinnatifid, lobes 3—14, narrowly linear-lanceolate to narrowly oblong-ovate, 1—16 mm wide, faces hirsute, gland-dotted. Heads 1—15, held well beyond leaves. Peduncles (1.5—)6.5—48+ cm (ribs tan, prominent). Phyllaries 5—14, outer linear, 4—14 × 0.5—2 mm, inner lanceolate-ovate, 0.8—3 × 0.8—2 mm. Paleae 2.3—3.5 × 0.5—3 mm, resin glands oval-oblanceolate, 0.6—1.5 mm. Ray florets 4—12; corollas yellow, purplish yellow, or maroon, sometimes bicolor (maroon/yellow), laminae lanceolate-ovate to elliptic-oblanceolate, 7—35 × 4—17 mm. Discs columnar, 10—50 × 7—12 mm. Disc florets 200—400+; corollas greenish yellow, often purplish distally, 1—2.5 mm; style branches 0.5—1.4 mm, proximal 2 /3— 3 /4 stigmatic, apices rounded. Cypselae oblong, 1.2—3 × 1.2—2 mm, abaxial margins glabrous, adaxial margins and apices glabrous or ciliate; pappi (tan) usually of 1—2 toothlike projections, sometimes 0. 2 n = 28.

Flowering Mar—Nov. Prairies; 10—2200 m; Alta., B.C., Man., Ont., Sask.; Ariz., Ark., Colo., Ill., Ind., Iowa, Kans., La., Mass., Minn., Mo., Mont., Nebr., N.J., N.Mex., N.C., N.Dak., Okla., S.Dak., Tenn., Tex., Utah, Wis., Wyo.; Mexico (Chihuahua, Coahuila, Hidalgo, Nuevo León, San Luis Potosí, Tamaulipas, Veracruz).

Ratibida columnifera is grown as an ornamental and is often included in wild flower plantings. Such activities may extend the geographic range of the species to roadsides and prairie-like habitats.

Some variants of Ratibida columnifera have been treated as varieties or forms. The most prominent of these is forma pulcherrima (de Candolle) Fernald, which is characterized by its showy, purplish yellow to purple rays; it is more frequent in the southwestern part of the range of the species. In the typical form, rays are yellow (E. L. Richards 1968).

Some authors have argued that Ratibida columnaris (Sims) D. Don is the correct name for this species; J. L. Reveal (1968) and E. L. Richards (1968) provided synoptic discussions of the issue.

Updated: 2024-05-24 12:36:03 gmt
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