Brown Knapweed on:
[Wikipedia]
[Google]
[Amazon]
''Centaurea jacea'', brown knapweed or brownray knapweed, is a species of 
In Britain and America, it is often found as a hybrid of black knapweed, ''
herbaceous
Herbaceous plants are vascular plants that have no persistent woody stems above ground. This broad category of plants includes many perennials, and nearly all annuals and biennials.
Definitions of "herb" and "herbaceous"
The fourth edition of ...
perennial plant
In horticulture, the term perennial (''wikt:per-#Prefix, per-'' + ''wikt:-ennial#Suffix, -ennial'', "through the year") is used to differentiate a plant from shorter-lived annual plant, annuals and biennial plant, biennials. It has thus been d ...
s in the genus ''Centaurea
''Centaurea'' () is a genus of over 700 species of herbaceous thistle-like flowering plants in the family Asteraceae. Members of the genus are found only north of the equator, mostly in the Eastern Hemisphere; the Middle East and surrounding ...
'' native to dry meadows and open woodland
A woodland () is, in the broad sense, land covered with woody plants (trees and shrubs), or in a narrow sense, synonymous with wood (or in the U.S., the '' plurale tantum'' woods), a low-density forest forming open habitats with plenty of sunli ...
throughout Europe. It grows to tall, and flowers mainly from June to September. It has simple leaves that are alternate in arrangement.
In Britain and America, it is often found as a hybrid of black knapweed, ''Centaurea nigra
''Centaurea nigra'' is a species of flowering plant in the family Asteraceae, and is also known as lesser knapweed, common knapweed, black knapweed and bell weed.
It is native to central Europe, and has been introduced to temperate North America ...
''. Unlike the black knapweed, the flower heads always look as if they are rayed, forming a more open star rather than a brush-like tuft.
References
External links
* jacea Flora of Europe Flora of North Africa Plants described in 1753 Taxa named by Carl Linnaeus {{Cynareae-stub