What are the immortal flowers and plants in the shape of squirrel tail in the middle of ancient roof tiles? Is it useful?

Vasong, Vasong, scientific name of traditional Chinese medicine. This is the dry aerial part of Orosta. Tassel chyme ) Berg. Harvest in summer and autumn when flowers bloom, remove roots and impurities, and dry in the sun.

Last night, the leaves were covered with grass (Tang herbal medicine), but there was no root grass (empirical side) on the house, while the leaves were covered with grass (Geng Xin Imperial Policy), tile flowers (Fiona Fang), shilianhua and Cuolian (Fujian folk herbs), dried drops on the leaves (Northeast herbal plants) and grass tiles on the leaves.