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Giant hogweed is a monocarpic perennial, [14] [9] [10] that is, after a mature plant flowers and produces seed, the entire plant dies. During the following winter, tall dead stems mark the locations where the flowering plants once stood. The seeds are dispersed short distances by wind, but can travel longer distances by water, animals, and people.
The flowers are arranged in a loose cluster and have ten filaments – five of which are fertile – and five styles. [6] The leaves are pinnate to pinnate-pinnatifid, with hairy stems. [7] The long seed-pod, shaped like the bill of a stork, bursts open in a spiral when ripe, sending the seeds (which have long tails called awns) into the air.
Typha / ˈ t aɪ f ə / is a genus of about 30 species of monocotyledonous flowering plants in the family Typhaceae.These plants have a variety of common names, in British English as bulrush [4] or (mainly historically) reedmace, [5] in American English as cattail, [6] or punks, in Australia as cumbungi or bulrush, in Canada as bulrush or cattail, and in New Zealand as raupō, bullrush, [7 ...
This perennial weed has slender, grass-like stems and small, inconspicuous flowers. It thrives in moist, poorly drained soil and can form dense mats. Penpak Ngamsathain
It is a perennial plant growing to 0.3–1 m (1– 3 + 1 ⁄ 2 ft) tall. The leaves are spirally arranged, lanceolate, 3–12 cm (1 + 1 ⁄ 4 – 4 + 3 ⁄ 4 in) long, [4] and 2–3 cm (3 ⁄ 4 – 1 + 1 ⁄ 4 in) broad. From April to September, in the upper axils, 7.5 cm (3 in)–wide umbels of orange, yellow or red flowers 1.5 cm (1 ⁄ 2 in ...
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