Hawthorn , also hawk- shaped , hawk- leaved ( Latin Pícris hieracioídes ), is a perennial herbaceous plant of the family Asteraceae , a species of the genus Biting ( Picris ).
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| Subtribe : | Hypochaeridinae |
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| International scientific name |
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Picris hieracioides L. , 1753 |
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Content
Botanical illustration from a book by
O. V. Tome Flora von Deutschland, Österreich und der Schweiz , 1885
Biennial or perennial herb with a thick stem root. Stem (15) 30-100 (145) cm tall, erect, pale green, sometimes brownish-violet, stiff, furrowed, leafy, branched, covered with sparse to numerous rigid branched and anchor hairs.
The leaves are yellowish-green above, lighter below, sometimes with a lilac shade, usually covered with numerous simple, branched and anchor-like hairs. The plate of the basal and lower stem leaves is 6–20 cm long and 1–5 cm wide, lanceolate, ovate, narrowly elliptical or oblong, whole-edge or notched-dentate, narrowed into a short petiole. The middle and upper stem leaves are sessile and, to one degree or another, stem-bearing, similar to the lower ones, smaller in size.
Baskets 2-4 cm in diameter, apical, peduncles with short, sinuous and various lengths of simple, branched and anchor-like hairs. The wrapper is multirow, its leaves are 9-15 mm long, green, sometimes blackish, linearly lanceolate to narrowly elliptic, glabrous or with sinuous and simple, branched or anchor, sometimes blackish hairs. The flowers are all reed , bright yellow, marginal - often with a reddish streak on the outside.
Fruits - achenes of red-brown color, fusiform, slightly curved, 3-6 mm long, finely wrinkled, with a double-row crested crest 5-6 mm long.
Diploid set of chromosomes - 2n = 10.
