Centaurea jacea, brown knapweed[1] or brownray knapweed, is a species of herbaceous perennial plants in the genus Centaurea native to dry meadows and open woodland throughout Europe. It grows to 10–80 centimetres (4–31 in) tall, and flowers mainly from June to September. It has simple leaves that are alternate in arrangement.[2]
Centaurea jacea
In Britain and America, it is often found as a hybrid of black knapweed, Centaurea nigra.[3] 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.
Centaurea × moncktonii is a fertile hybrid between black knapweed and brown knapweed.[4]
^BSBI List 2007(xls). Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-06-26. Retrieved 2014-10-17.
^"Centaurea jacea (brown knapweed): Go Botany". gobotany.nativeplanttrust.org. Retrieved 2024-03-05.
^Rose, Francis (1981). The Wild Flower Key. Frederick Warne & Co. pp. 386–387. ISBN 0-7232-2419-6.
^"Centaurea x_moncktonii in Flora of North America @ efloras.org". www.efloras.org. Retrieved 24 October 2022.
Centaureajacea, brown knapweed or brownray knapweed, is a species of herbaceous perennial plants in the genus Centaurea native to dry meadows and open...
Jacea may refer to two different genera of plants: Jacea Opiz, a taxonomic synonym for Viola (plant), the violets Jacea Mill., a taxonomic synonym for...
Brown knapweed (Centaureajacea) is different in having pale brown bract appendages, no pappus. Flowers August until September. Centaurea ×moncktonii, is...
hybrid between black knapweed (Centaurea nigra) and brown knapweed (Centaureajacea). The taxonomic status of the species is uncertain, and meadow knapweed...
O-methylated flavonol. It can be found in Chamomilla recutita, in Centaureajacea and can be synthesized. Jaceidin has many different characteristics...
various plants, including Linaria, Plantago lanceolata, Veronica, Centaureajacea and Digitalis purpurea. Male Male underside Female Female underside...
very similar to Eucosma cana The larvae feed on Centaurea cyanus, Centaurea scabiosa, Centaureajacea, Serratula tinctoria, Carduus, Cirsium and Picris...
feeds on the nectar of several flowering species including knapweed (Centaureajacea) and scabious (Knautia arvensis and Succisa pratensis). However, brimstones...
from June to August. They fed on nectar and pollen, especially of Centaureajacea. Larvae develop in the dark arches moth (Apamea monoglypha). "BioLib...
(Diptera: Tephritidae) for biological control of yellow starthistle, Centaurea solstitialis (Compositae), in the western USA: establishment and seed...
Italy. In Austria and Hungary, the larvae feed on Centaurea scabiosa, Centaureajacea and Centaurea triumfetti, while Carduus uncinutus, Carduus arabicus...
The species feeds on plants in the family Asteraceae, particularly Centaureajacea. "Cassida bergeali Bordy, 1995". Biol.uni.wroc.pl. Archived from the...
feed on the seedheads of Sonchus arvensis, Picris hieracioides and Centaureajacea. tortricidae.com Catalogue of Eucosmini from China (Lepidoptera: Tortricidae)...
about 22 mm. Adults have been recorded feeding on flower nectar of Centaureajacea. Diastictis ventralis ventralis (eastern North America) Diastictis...
have been recorded feeding on Carduus nutans, Cirsium lanceolatum and Centaureajacea. Cochylis posterana posterana (Europe) Cochylis posterana hyrcana (Toll...
one generation from June to August.[1] The larva feeds on Centaurea scabiosa, Centaureajacea, Knautia arvensis, Knautia dipsacifolia, Scabiosa columbaria...
depending on the location. The larvae feed on Plantago and Centaurea species (including Centaureajacea).[citation needed] Named in the classical tradition....
17–19 millimetres (0.67–0.75 in). The larvae feed on Centaurea aspera, Centaureajacea, Centaurea scabiosa and Serratula tinctoria. They create a spathulate...
on only a few types of food) and eat nettle, Verbascum thapsus and Centaureajacea. This species can be found in most of Europe, but has also been recorded...
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