Saussurea riederi subsp. yezoensis

국표에 없다.

aussurea riederi subsp. yezoensis is a perennial herb of the genus Spruce in the family Asteraceae. Chishimakita thistle (Scientific name: Saussurea riederi)A subspecies that uses the basic species in classification。

Features

Stems erect, grow to 30-100 cm in height, unbranched or somewhat branched at the top, with short curly hairs at the top, with narrow wings. At the time of flowering, root leaves are usually absent. The leaves are alternate, the leaves from the lower to the middle of the stem are grassy, the leaf blades are broadly ovate to ovate or elongated triangular, 3-8.5 cm long, sharply pointed at the tip, incised to heart-shaped at the base, and coarsely serrated at the edges. The leaves are sparsely covered with fine hairs on both sides, have petioles that grow to 3-9 cm in length, and have wings. The leaves at the top of the stem gradually become smaller, and the base embraces the stem。

The flowering period is from July to August. The capitate inflorescences are clustered or double-bunched, with 10 densely packed inside and outside, and the peduncle is as short as 3-8 mm. The bracts are blackish-purple at the top, narrowly cylindrical with a length of 8-12 mm and a diameter of 4-5 mm, and the total bracts are 6-7 rows, the pieces are crimped, the outer part is broadly ovate, and the tip extends caudate. There are curly spider hairs on the surface of the bracts. The head flower consists only of tubular flowers, the length of the corolla is 9-10 mm, and the color is reddish-purple. The fruit becomes a achene 4 mm long. The crown hair is two-ringed, the outer ring that is easy to fall off is 0.5-4.5 mm long, and the inner ring that remains after the flower is 7 mm long。

Thistle - Wikipedia, the free encyclopedia

 

 

 

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