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COMMON KNAPWEED Centaurea nigra (Asteraceae) Height to 1m. Downy or hairy perennial that branches towards the top of the plant. The stems are stiff and grooved and are often swollen beneath the base of the flowers. Grows in a wide range of grassy places. FLOWERS are borne in heads, 2-4cm across, with reddish purple florets and a swollen, hard base covered in brown bracts; heads are usually solitary (Jun-Sep). FRUITS do not have pappus hairs. LEAVES are narrow, those near the base of the plant are slightly lobed. STATUS-Widespread and common throughout.
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141410
COMMON KNAPWEED Centaurea nigra (Asteraceae) Height to 1m. Downy or hairy perennial that branches towards the top of the plant. The stems are stiff and grooved and are often swollen beneath the base of the flowers. Grows in a wide range of grassy places. FLOWERS are borne in heads, 2-4cm across, with reddish purple florets and a swollen, hard base covered in brown bracts; heads are usually solitary (Jun-Sep). FRUITS do not have pappus hairs. LEAVES are narrow, those near the base of the plant are slightly lobed. STATUS-Widespread and common throughout.

Filename: 141410.jpg
Size: 2353x3543 / 4.1MB
Source:
Date: 17 Jul 2010
Location:
Credit: PAUL STERRY/NPL
Copyright:
Model Release: No
Property Release: No
Restrictions: Nature Photographers Ltd., West Wit, New Road, Little London, Tadley, Hampshire, RG26 5EU. Tel: +44(0)1256 850661 web: www.naturephotographers.co.uk
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