BugwoodWiki Article

bull cottonthistle
Onopordum tauricum Willd.

Overview

Appearance
Onopordum tauricum is a biennial herb that can grow up to 8 ft. (2.4 m) tall.
Foliage
The leaves of O. tauricum are bright green in color and from 3.9-9.8 in. (10-25 cm) long. Leaves are covered with short hairs, are acutely triangular and have toothed lobes.
Flowers
Onopordum tauricum flower heads are spherical and bright purple to pink in color. They are from 3-4 in. (7.6-10.2 cm) in diameter with numerous spiny bracts. Flowering occurs in summer.
Fruit
Fruits are from 0.2-0.24 in. (5-6 mm) long. Each fruit contains several white to tan seeds from 0.31-0.39 in. (8-10 mm) long. Seeds have short bristles. This plant reproduces by seed.
Ecological Threat
Onopordum tauricum prefers disturbed areas including fields and roadsides. It is native to temperate Asia and eastern Europe.

Selected Images


5330015
5330015

bull cottonthistle
Onopordum tauricum
Plant(s)
Devon Pfeiffer
5330022
5330022

bull cottonthistle
Onopordum tauricum
Plant(s)
Devon Pfeiffer
5330023
5330023

bull cottonthistle
Onopordum tauricum
Plant(s)
Todd Pfeiffer
5330025
5330025

bull cottonthistle
Onopordum tauricum
Plant(s)
Todd Pfeiffer
5330021
5330021

bull cottonthistle
Onopordum tauricum
Stem(s)
Devon Pfeiffer
5330024
5330024

bull cottonthistle
Onopordum tauricum
Flower(s)
Todd Pfeiffer
5330018
5330018

bull cottonthistle
Onopordum tauricum
Flower(s)
Devon Pfeiffer
5330026
5330026

bull cottonthistle
Onopordum tauricum
Flower(s)
Todd Pfeiffer
5330017
5330017

bull cottonthistle
Onopordum tauricum
Flower(s)
Devon Pfeiffer
5330016
5330016

bull cottonthistle
Onopordum tauricum
Plant(s)
Devon Pfeiffer
5472458
5472458

bull cottonthistle
Onopordum tauricum
Fruit(s)
Deena Walters
5472459
5472459

bull cottonthistle
Onopordum tauricum
Fruit(s)
Deena Walters

Maps


EDDMapS Distribution - This map is incomplete and is based only on current site and county level reports made by experts, herbaria, and literature. For more information, visit www.eddmaps.org

EDDMapS Distribution

State Regulated List - This map identifies those states that list this species on their regulated list. For more information, visit Invasive.org

State Regulated List

Taxonomic Rank

Kingdom: Plantae
Phylum: Magnoliophyta
Class: Magnoliopsida
Subclass: Asteridae
Order: Asterales
Family: Asteraceae
Genus: Onopordum

Other System Links

Plants: ONTA
GRIN: 401780
ITIS: 38141
NPDN Pest: PBFCNCA

Synonyms and Other Names

Other Common Names:
Scotch thistle, taurus cotton thistle

Categories

Category: Forbs/Herbs