dcsimg

Comments ( anglais )

fourni par eFloras
Verbesina helianthoides may be no longer present in Georgia.
licence
cc-by-nc-sa-3.0
droit d’auteur
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
citation bibliographique
Flora of North America Vol. 21: 107, 109 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
rédacteur
Flora of North America Editorial Committee
projet
eFloras.org
original
visiter la source
site partenaire
eFloras

Description ( anglais )

fourni par eFloras
Plants 60–120+ cm (perennating bases ± erect or horizontal rhizomes, internodes winged). Leaves all or mostly alternate (proximal sometimes opposite); blades ± lance-ovate to lanceolate, 5–12+ × 2–5+ cm, bases ± cuneate, margins ± toothed, apices acute to attenuate, faces strigose to sericeous. Heads 2–5(–10+) in ± corymbiform arrays. Involucres ± hemispheric, 10–15+ mm diam. Phyllaries 16–21+ in 2–3 series, ± erect, lanceolate, 6–9+ mm. Ray florets 8–13+; laminae 20–25(–30+) mm. Disc florets 40–80+; corollas yellow. Cypselae dark brown to black, oblanceolate to elliptic, 5 mm, faces strigillose to glabrate; pappi 0.5–1.5 mm. 2n = 34.
licence
cc-by-nc-sa-3.0
droit d’auteur
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
citation bibliographique
Flora of North America Vol. 21: 107, 109 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
rédacteur
Flora of North America Editorial Committee
projet
eFloras.org
original
visiter la source
site partenaire
eFloras

Verbesina helianthoides ( anglais )

fourni par wikipedia EN

Verbesina helianthoides, commonly called yellow crownbeard[2] or gravelweed,[3] is a species of flowering plant in the family Asteraceae. It is native to the United States, where it is primarily found in the Upper South and South Central areas.[4] Its natural habitat is in communities that receive ample sunlight, such as open woodlands, prairies, and glades.[2][5]

Verbesina helianthoides is a tall, leafy perennial that grows to a height of 1 m (39 in). It has hairy, winged stems and alternate leaves that are coarsely hairy on the upper surface. The leaves have widely spaced, small teeth and are 6–15 cm (2.4–5.9 in) long. It produces yellow flowers from May to October.[6] Each composite flower is 5–6 cm (2–2.5 in) across and has 40 to 80 yellow tubular disk flowers surrounded by about twelve yellow ray flowers.[7] Its flowering time starts much earlier in the year than other Verbesina that it co-occurs with, such as Verbesina alternifolia with yellow flowers and Verbesina virginica with white flowers.[8][7] It also is shorter in height.[6]

References

  1. ^ "NatureServe Explorer 2.0". explorer.natureserve.org.
  2. ^ a b Yellow Crownbeard, Illinois Wildflowers
  3. ^ USDA, NRCS (n.d.). "Verbesina helianthoides". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 25 January 2018.
  4. ^ "Verbesina helianthoides". County-level distribution map from the North American Plant Atlas (NAPA). Biota of North America Program (BONAP). 2014. Retrieved 24 January 2018.
  5. ^ Yatskievych, George (2006). Flora of Missouri, Volume 2. Missouri Botanical Garden Press. p. 566.
  6. ^ a b Denison, Edgar (2017). Missouri Wildflowers (Sixth ed.). Conservation Commission of the State of Missouri. p. 145. ISBN 978-1-887247-59-7.
  7. ^ a b "Know Your Natives – Yellow Crownbeard". Arkansas Native Plant Society. 8 June 2015.
  8. ^ "Verbesina helianthoides page". www.missouriplants.com.
licence
cc-by-sa-3.0
droit d’auteur
Wikipedia authors and editors
original
visiter la source
site partenaire
wikipedia EN

Verbesina helianthoides: Brief Summary ( anglais )

fourni par wikipedia EN

Verbesina helianthoides, commonly called yellow crownbeard or gravelweed, is a species of flowering plant in the family Asteraceae. It is native to the United States, where it is primarily found in the Upper South and South Central areas. Its natural habitat is in communities that receive ample sunlight, such as open woodlands, prairies, and glades.

Verbesina helianthoides is a tall, leafy perennial that grows to a height of 1 m (39 in). It has hairy, winged stems and alternate leaves that are coarsely hairy on the upper surface. The leaves have widely spaced, small teeth and are 6–15 cm (2.4–5.9 in) long. It produces yellow flowers from May to October. Each composite flower is 5–6 cm (2–2.5 in) across and has 40 to 80 yellow tubular disk flowers surrounded by about twelve yellow ray flowers. Its flowering time starts much earlier in the year than other Verbesina that it co-occurs with, such as Verbesina alternifolia with yellow flowers and Verbesina virginica with white flowers. It also is shorter in height.

licence
cc-by-sa-3.0
droit d’auteur
Wikipedia authors and editors
original
visiter la source
site partenaire
wikipedia EN