Description
Eurybia chlorolepis is a herbaceous perennial plant that typically grows 30–120 cm (1–4 feet) tall. It features slender, upright stems that are often hairy. The leaves are generally lance-shaped or elliptic, with serrated margins, and decrease in size higher up the stem. Basal leaves are often larger and petiolate, while stem leaves are sessile or nearly so.
The plant produces numerous small flower heads in branched clusters (panicles) from late summer to fall. Each flower head measures about 1–2 cm (0.4–0.8 inches) across and consists of:
- Ray florets: Typically 8–15, white, giving the flower a daisy-like appearance.
- Disk florets: Numerous, yellow, located in the center of the head.
A key diagnostic feature of Eurybia chlorolepis are its phyllaries (bracts surrounding the flower head). These are typically arranged in several series, and their tips are often distinctly green and somewhat spreading, giving rise to its specific epithet "chlorolepis" (meaning "green scale").
Taxonomy
Eurybia chlorolepis belongs to the genus Eurybia, which was formerly included within the genus Aster. Molecular phylogenetic studies led to the reclassification of many North American asters into new genera, including Eurybia.
- Kingdom: Plantae
- Clade: Tracheophytes
- Clade: Angiosperms
- Clade: Eudicots
- Clade: Asterids
- Order: Asterales
- Family: Asteraceae
- Genus: Eurybia
- Species: E. chlorolepis
Distribution and Habitat
This species is endemic to the southeastern United States, with its range concentrated in the Appalachian mountain range, extending from parts of West Virginia, Virginia, North Carolina, South Carolina, Tennessee, Georgia, and Alabama.
Eurybia chlorolepis thrives in various habitats, including:
- Open woodlands
- Rocky slopes and clearings
- Forest edges
- Roadsides It prefers well-drained, often acidic soils, and can be found in both drier and moderately moist conditions.
Etymology
The specific epithet "chlorolepis" is derived from Ancient Greek:
- "chloros" (χλωρός) meaning "green"
- "lepis" (λεπίς) meaning "scale" This refers to the distinctive green-tipped phyllaries that enclose the flower heads.
Ecological Significance
Like many asters, Eurybia chlorolepis provides nectar and pollen for various insect pollinators, including bees, butterflies, and other beneficial insects, making it a valuable component of late-season ecosystems. Its seeds may also provide food for birds.
References
- Weakley, A. S. (2020). Flora of the Southeastern United States. University of North Carolina Herbarium.
- Brouillet, L., et al. (2006). Eurybia. In: Flora of North America Editorial Committee (eds.), Flora of North America North of Mexico, Vol. 20. Oxford University Press.
- Missouri Botanical Garden Plant Finder. Eurybia chlorolepis.