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.
Classification
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
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