Centaurea calcitrapa

From Bugwoodwiki
1354008
Taxonomy
Kingdom:
Plantae
Phylum:
Magnoliophyta
Class:
Magnoliopsida
Order:
Asterales
Family:
Asteraceae
Genus:
Centaurea
Species:
C. calcitrapa
Scientific Name
Centaurea calcitrapa
L.
Common Names
purple starthistle, red starthistle

Overview

Appearance
Centaurea calcitrapa is a biennial to perennial plant. It grows 2-3 ft. (0.61-0.91 m) tall.
Foliage
The stems and leaves are covered with fine hairs. Lower and basal leaves are divided or deeply lobed. Leaves become less divided toward the apex of the plant.
Flowers
Flowering occurs from July to October, when purple to pink blooms develop at the ends of the stems. Floral bracts are tipped with 1 in. (2.5 cm) long, straw colored spines.
Fruit
The fruit is an achene 0.08-0.16 in. (2-4 mm) long which lacks a pappus.
Ecological Threat
A native of southern Europe, Centaurea calcitrapa produces prolific seeds and often invades floodplains, dry forests and grasslands.

Resources

Images from Bugwood.org


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