Difference between revisions of "Rudbeckia amplexicaulis"
Skr. Naturhist. Selsk. 2(2): 29, plate 4. 1793.
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Revision as of 18:50, 24 September 2019
Leaf blades 3–15 × 0.5–4 cm. Involucres 1–4 cm diam. Phyllaries spreading to reflexed, green, linear to lanceolate, herbaceous. Ray laminae spreading, eventually reflexed, elliptic to obovate, 12–30 × 7–15 mm, abaxially hirsute. Disc corollas 2.8–3.5 mm. Cypselae: each face 4–5-striate and minutely cross-rugose, glabrous; pappi 0 (cypselae each with ring of tan tissue at apex, ca. 0.1 mm). 2n = 32.
Phenology: Flowering late spring–summer.
Habitat: Open sites, moist soils
Elevation: 0–400 m
Distribution
Ala., Ark., Fla., Ga., Ill., Kans., La., Miss., Mo., N.Mex., N.Dak., Okla., S.C., Tex.
Discussion
Rudbeckia amplexicaulis grows mainly in the Gulf coastal plain and Mississippi Embayment. It may be adventive elsewhere. It is used in “native” meadow and roadside plantings and has become a problem in some agricultural crops.
Selected References
None.