Silphium perfoliatum 30 PCS fresh seeds, cup plant, cup-plant, Herb seeds

Silphium perfoliatum (lat. Silphium perfoliatum).

A perennial plant with straight, tetrahedral, branched at the top, hollow, light green stems. The height of the plant is up to 400 cm. The root system is powerful, consisting of the main root and numerous shoots.

The inflorescence is complex, consisting of multi-tiered branches. Individual inflorescences are baskets with bright yellow petals, 3-4 cm in diameter. Each stem produces up to 50-60 baskets, which are located in the upper part of the plant.

The fruits are elongated, heart-shaped, flattened, brown achenes, about 10-12 mm long. The weight of 1000 achenes is 18-20 grams.

Blooms from late July to October. The bright yellow nectar-bearing tissue is slightly submerged in the depressions at the apex of the ovary, which is also exposed by nectar-bearing tissue. The nectary is low, almost flat on top: the side walls are slightly wavy. Nectar collects in the recess of the ovary.