Morphology

Read full entry

Description

Plants caulescent, 40–200 cm; fibrous rooted. Stems terete to slightly square, sparsely scabrous or glabrous (sometimes glaucous). Leaves: basal caducous; cauline opposite, sessile; blades lanceolate to ovate, 2–23 × 0.1–11 cm, bases round to caudate, margins finely serrate or entire, apices acute to acuminate, faces hispid, scabrous, or glabrous. Phyllaries 17–37 in 2–3 series, outer appressed, apices acute to acuminate, abaxial faces glabrous, hispid, pilose, or scabrous, sometimes stipitate-glandular. Ray florets 12–36; corollas yellow. Disc florets 70–225; corollas yellow. Cypselae 9–14 × 6–10 mm; pappi 1–4 mm.

Trusted

Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA

Source: Missouri Botanical Garden

Belongs to 1 community

Disclaimer

EOL content is automatically assembled from many different content providers. As a result, from time to time you may find pages on EOL that are confusing.

To request an improvement, please leave a comment on the page. Thank you!