Catkin Yew vs Ciliolate Aster

Amentotaxus argotaenia compared with Symphyotrichum ciliolatum

Key Differences

• Catkin Yew is Near Threatened while Ciliolate Aster is Not Evaluated.

Taxonomic Classification

Rank	Catkin Yew	Ciliolate Aster
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum	Coniferophyta (Conifers)	Magnoliophyta (Flowering Plants)
Class	Pinopsida (Conifers)	Magnoliopsida (Dicots)
Order	Pinales (Pines & Allies)	Asterales (Daisies & Sunflowers)
Family	Taxaceae	Asteraceae (Daisy Family)
Genus	Amentotaxus	Symphyotrichum
Species	Amentotaxus argotaenia	Symphyotrichum ciliolatum

Evolutionary Relationship

Catkin Yew and Ciliolate Aster share a common ancestor at the Kingdom level: Plantae. (Plants)

Conservation Status

Catkin Yew

NT — Near Threatened

Ciliolate Aster

NE — Not Evaluated

Physical Characteristics

Attribute	Catkin Yew	Ciliolate Aster
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Catkin Yew

Habitat

Typically found in temperate and boreal forests, often at higher elevations.

Ciliolate Aster

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Range

Distributed across Canada, Norway, and United States.

Catkin Yew

The Catkin Yew (Amentotaxus argotaenia) is a species in the genus Amentotaxus. It is currently classified as Near Threatened on the IUCN Red List. Typically found in temperate and boreal forests, often at higher elevations.

Ciliolate Aster

Ciliolate aster (Symphyotrichum ciliolatum) is a perennial wildflower in the family Asteraceae, native to central and northern North America, from the Great Plains east through the Great Lakes region and into the northeastern United States and southern Canada. It grows in open woodland, prairie margins, roadsides, and disturbed ground, preferring well-drained to moderately moist soils with full sun. The plant produces upright stems 40–100 centimeters tall bearing alternate, clasping leaves with slightly fringed (ciliolate) margins, and branched clusters of lavender to blue-violet daisy-like flower heads with yellow disc florets. Blooming occurs in late summer and autumn, providing important nectar for migrating monarch butterflies and native bees. Symphyotrichum ciliolatum is classified as Not Evaluated by the IUCN and is common across its native range. The genus Symphyotrichum was split from the broadly defined Aster following molecular phylogenetic work that demonstrated the non-monophyly of the traditional genus. Ciliolate aster is one of many native North American aster species with a wide distribution, though it is absent from Europe despite some database records listing Norway as its country—an artifact of data entry errors in global species databases. Conservation of native prairie and open woodland habitats benefits this species alongside its many pollinators.