crowndaisy
(Glebionis coronaria)
This species is Introduced in the United States
ORIGIN: Mediterranean, southwestern Asia
GROWTH TRAITS: Herbaceous, upright annual growing up to 3.2’ tall (1 m) from a taproot. The main stem spreads into numerous branches with smooth surfaces. Leaves are alternate, up to 3” long (8 cm) and deeply lobed. Lobes are themselves secondarily lobed into tiny, rounded-tooth projections. Inflorescences appear at stem tips from spring through early summer. Flower heads are 0.8-2.4” in diameter (2-6 cm) with numerous tiny, yellow florets in the center and 13- 21 petal-like florets on the periphery. Petal-like florets are either solid yellow or white with yellow bases. Flower heads produce numerous small brown seeds (achenes) that have no pappus.
REPRODUCTION: By seed only. Seeds remain viable in the soil for 3-4 years.
HABITAT: Found under a variety of conditions in riparian areas, coastal dunes, prairies, and scrubland.
LOOK-ALIKES: The daisy-like inflorescence helps differentiate this species from unrelated look-alikes. Several chamomile species (spanning multiple genera) have similar flower heads and similar, deeply-lobed leaves. Many look-alikes can be differentiated by having solid white petal-like florets (rather than yellow or white with yellow). Other look-alikes with all yellow florets have leaves that are less lobed or divided. The exotic golden chamomile (Cota tinctoria) has similar leaves and flower heads, however, its stems are typically less branched and have fewer leaves below the flower head. Golden chamomile leaves are also typically more jaggedly lobed and symmetrical compared to crown daisy.
CITATIONS:
Winston, R.L., Andreas, J.E., Milan, J., DesCamp, W., Randell, C.B., and M. Schwarzlander. 2014. New Invaders of the Southwest. United States Department of Agriculture, Forest Health Technology Enterprise Team. FHTET-2014-12. Retrieved from https://bugwoodcloud.org/resource/files/14767.pdf
GROWTH TRAITS: Herbaceous, upright annual growing up to 3.2’ tall (1 m) from a taproot. The main stem spreads into numerous branches with smooth surfaces. Leaves are alternate, up to 3” long (8 cm) and deeply lobed. Lobes are themselves secondarily lobed into tiny, rounded-tooth projections. Inflorescences appear at stem tips from spring through early summer. Flower heads are 0.8-2.4” in diameter (2-6 cm) with numerous tiny, yellow florets in the center and 13- 21 petal-like florets on the periphery. Petal-like florets are either solid yellow or white with yellow bases. Flower heads produce numerous small brown seeds (achenes) that have no pappus.
REPRODUCTION: By seed only. Seeds remain viable in the soil for 3-4 years.
HABITAT: Found under a variety of conditions in riparian areas, coastal dunes, prairies, and scrubland.
LOOK-ALIKES: The daisy-like inflorescence helps differentiate this species from unrelated look-alikes. Several chamomile species (spanning multiple genera) have similar flower heads and similar, deeply-lobed leaves. Many look-alikes can be differentiated by having solid white petal-like florets (rather than yellow or white with yellow). Other look-alikes with all yellow florets have leaves that are less lobed or divided. The exotic golden chamomile (Cota tinctoria) has similar leaves and flower heads, however, its stems are typically less branched and have fewer leaves below the flower head. Golden chamomile leaves are also typically more jaggedly lobed and symmetrical compared to crown daisy.
CITATIONS:
Winston, R.L., Andreas, J.E., Milan, J., DesCamp, W., Randell, C.B., and M. Schwarzlander. 2014. New Invaders of the Southwest. United States Department of Agriculture, Forest Health Technology Enterprise Team. FHTET-2014-12. Retrieved from https://bugwoodcloud.org/resource/files/14767.pdf
Maps
EDDMapS Distribution - This map is incomplete and is based only on current site and county level reports made by experts, herbaria, and literature. For more information, visit www.eddmaps.org
State Lists - This map identifies those states that have this species on their invasive species list or law.
Taxonomic Rank
| Domain: Eukarya |
| Kingdom: Plantae |
| Phylum: Magnoliophyta |
| Class: Magnoliopsida |
| Superorder: Asteranae |
| Order: Asterales |
| Family: Asteraceae |
| Subfamily: Asteroideae |
| Tribe: Anthemideae |
| Genus: Glebionis |
| Glebionis coronaria |
References
Common Name Reference: USDA, NRCS. 2010. The PLANTS Database. National Plant Data Center, Baton Rouge, LA, USA.
Scientific Name Reference: USDA, NRCS. 2010. The PLANTS Database. National Plant Data Center, Baton Rouge, LA, USA.