Difference between revisions of "Dieteria bigelovii"
Sida 20: 1394. 2003.
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Latest revision as of 18:20, 6 November 2020
Biennials or short-lived perennials. Stems, branches, and peduncles sometimes puberulent or canescent, stipitate-glandular. Leaf blades lanceolate to oblanceolate (linear to linear-oblanceolate in var. mucronata), mid 20–80 × (2–)5–15 mm, margins entire to irregularly dentate or serrate, faces glabrous or puberulent, often sparsely stipitate-glandular; distal bases usually cordate to auriculate, clasping. Involucres broadly turbinate to hemispheric. Phyllaries in 5–10 series, spreading to reflexed, apices long-acuminate, 2–6 mm, herbaceous (acute to acuminate, 1–3 mm in var. commixta), faces stipitate-glandular. Receptacles 4–9 mm diam. Ray florets pistillate, fertile; laminae blue to purple, 10–25 × 1–2 mm. Disc corollas 5–7(–8) mm. Cypselae sparsely appressed-hairy.
Distribution
Ariz., Colo., N.Mex., Utah, Wyo.
Discussion
Varieties 3 (3 in the flora).
Selected References
None.
Lower Taxa
Key
| 1 | Involucres hemispheric, widths 2–3 times heights; phyllaries 90–100, 0.5–1 mm wide (at midpoint), apices long-acuminate, 2–5 mm | Dieteria bigelovii var. mucronata |
| 1 | Involucres broadly turbinate to hemispheric, 1–2(–3) times heights; phyllaries 25–100, 1–2 mm wide (at midpoint), apices acute to long-acuminate | > 2 |
| 2 | Phyllaries 50–100, apices long-acuminate, 3–6 mm, ray florets 30–60 | Dieteria bigelovii var. bigelovii |
| 2 | Phyllaries 25–50, apices acute to acuminate, 2–4 mm; ray florets 12–30 | Dieteria bigelovii var. commixta |