Centaurea calcitrapa | purple starthistle

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36.056316, -112.08046
36° 3′ 22.77″ N, 112° 4′ 49.66″ W
36 3 22.77, 112 4 49.66

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If you don't carry a ruler you can use a quarter which is an inch in diameter. Although flowers may be easy to measure, the size often varies. Botanical descriptions often do not include the flower size so some of our size information may be wrong.

When a plant has clusters of small flowers you should measure the size of a flower even though it may be very small. Many plants have flowers that are not obvious and in that case we put them in the "Very Small" category.

Leaf Attachment

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Habitat	Description
Alpine	Growing above timberline
Aquatic	Growing in or floating in water
Brush	Scab, chaparral, thicket, clearcut, scrub and similar terms
Cliff	On a cliff, rock wall or similar surface
Desert	Described as a desert, wash, arid or very dry area
Disturbed	Along a road, railroad, burned area, vacant lot and similar places
Epiphyte	Growing on a plant or on decaying plant material
Forest	In a grove, stand or woods or otherwise associated with trees
Grassland	A pasture, prairie, rangeland or steppe
Meadow	An area described as a meadow
Riparian	Near a stream, river, lake, seep or other wet area
Rocky	An outcrop, scree, talus area or other rocky area
Salt Marsh	An alkali or tidal area
Sand	An area described as sandy or a sand dune
Wetland	Marsh, swamp, bog, fen or wetland
Ignore	No habitat specified

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purple starthistle

purple starthistle Aster Family
Centaurea calcitrapa Asteraceae
--show more--

English common name
  •purple starthistle
Spanish common names
  •abriojos
  •abrepuño
accepted scientific name
  •Centaurea calcitrapa L.
rules for finding collection records
  •Centaurea calcitrapa (106)
family name
  • Asteraceae

Image Author: ©2006 Anthony Valois and the National Park Service
Image License: public domain
Image Source

Category: Wildflowers
Flowers: Many petals
Petal colors:

Flower size is 0.6 to 1.0 inches
Number of ray petals: 25 to 40
Leaf: Alternate
Plant Observed beginning of September thru 3rd week of May
Native to Europe

How Likely at this Location (22%)

Name Match (100%)

Plant Showiness (54%)

Links to Plant Descriptions
Flora of North America
Instituto Darwinion (7)
Wikipedia Español
E-Flora BC
Wikipedia English
Flora Bonaerense (1)
Jepson
WFO Monographs
UW Herbarium (3)
SEINet (1)

Links to Plant Photos
Cal Photos (92)
Flora Mendocina (17)
iNaturalist (24)
Tony Valois NPS (4)
Wikimedia Commons (5)
Flora Uruguay (2)

Where the plant has been found

Credits

Elevation (m) vs. Time of Observation (Flowering)

Credits