How to identify black and purple sunflowers

Article Catalog

1. Leaves

2. Flowers

3. Fruit

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Leaves: The leaves of black and purple sunflowers are opposite, sometimes the upper part or all the leaves are alternate, and the leaves have petioles. Flowers: Its flowers are flower heads, which are solitary or arranged in a corymb shape. The tongue-like flowers spread out and are yellow. The upper part of the tubular flower is bell-shaped, and the upper end is yellow, purple or brown. Fruit: Achenes are oblong or obovate.

1. Leaves

1. Leaves

The leaves of black and purple sunflowers are opposite, sometimes the upper part or all are alternate. Its leaves have petioles and usually have three veins after leaving the base.

2. Flowers

Black and purple Sunflower flowers are in the form of head-like inflorescences. The flowers are solitary or arranged in the shape of an umbrella. There are many small flowers of different shapes in the inflorescence. There is a layer of asexual tongue-shaped flowers on the periphery. In the center, there are many bisexual flowers that can bear fruits. . The flowers of the ligular flower are expanded and yellow in color; the tube of the tubular flower is very short, the upper part is bell-shaped, the upper end is yellow, purple or brown, and has 5 lobes.

3. Fruit

Achenes grow Round or obovate, slightly flat or with 4 thick edges.

2. Flowers

3. Fruit

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