Calycoseris wrightii – White Tackstem

Calycoseris wrightii - White Tackstem

Calycoseris wrightii - White Tackstem

Plant Name

Scientific Name: Calycoseris wrightii

Common Name: White Tackstem

Plant Characteristics

Duration: Annual

Growth Habit: Herb/Forb

Arizona Native Status: Native

Habitat: Desert

Flower Color: White rays

Flowering Season: Spring

Height: To 1 foot (30 cm) tall

Description: The flower heads are up to 1.5 inches (3.8 cm) in diameter and have square-tipped, toothed rays. The leaves are hairless, blue-green, and pinnately divided into long, linear lobes. There are tiny, tack-shaped glands on the stems and flower bases.

The similar New Mexico Plumeseed (Rafinesquia neomexicana) and California Plumeseed (Rafinesquia californica) lack these tiny, tack-shaped glands.


Kingdom: Plantae – Plants
Subkingdom: Tracheobionta – Vascular plants
Superdivision: Spermatophyta – Seed plants
Division: Magnoliophyta – Flowering plants
Class: Magnoliopsida – Dicotyledons
Subclass: Asteridae
Order: Asterales
Family: Asteraceae – Aster family
Genus: Calycoseris A. Gray – tackstem
Species: Calycoseris wrightii A. Gray – white tackstem

More About This Plant

Arizona County Distribution Map