Morphological characteristics
Annual herb. High (20) 50-100 (150) centimeters. Stems erect, upper branches, entire stems white or pale white, smooth, glabrous. Middle and lower stems and leaves lanceolate, lanceolate or oblong-lanceolate, 7-15 cm long, 2.5-6 cm wide, with large jagged edges, heavy jagged edges, small serrations and even jagged edges, very few plumes Deeply lobed, tooth tip with acupuncture, acupuncture length 1-1.5 mm, upward leaves gradually smaller, lanceolate, serrated edge, tooth tip acupuncture longer, up to 3 mm. All the leaves are hard and leathery, with hairless and non-gland spots on both sides, shiny, sessile base, and semi-ambitary. Most flower heads, arranged at the top of the stems as corymbs, surrounded by temporal lobes, bracts elliptic or ovate-lanceolate, including apical length 2.5-3 cm, margins with acupuncture, acupuncture length 1-3 mm, or without acupuncture, the tip of a long, dentate acupuncture, acupuncture length of 2 mm. The total body is ovate, 2.5 cm in diameter. Total sepals 4 layers, outer harp-like, middle or lower part overflowing, collecting the upper leaves, green, no needles or dentate acupuncture on the edges, acupuncture up to 3 mm, tip acuminate, It is 1-2 mm long and overflows with the following yellowish-white; the inner layer of dura mater, inverted lanceolate elliptic to long oblanceolate, up to 2.2 centimeters long, apex acuminate. All sepals glabrous, non-carcinacous, tubular flowers 1–2 cm long, red-yellow or red on the surface; Corolla tube slender, apex 5-lobed, lobes narrow, 5–8 mm long; stamens 5, anthers aggregate into a tube, common White; stigma slender cylindrical, apical fork. Soft. The gas is slightly fragrant and the taste is slightly bitter. The florets are red and orange, all of which are bisexual. The corolla is 2.8 centimeters long and the thin tube minister is 2 centimeters. The corolla lobes reach the base of the crest. Achene obovate, 5.5 mm long, 5 mm wide, milky white, with 4 edges, ribs protruding from the top of the fruit, lateral raw surface, no crown hair flower fruit from May to August.
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