Some of the plants which may be found in this area are field chickweed (Cerastium arvense), felt-leaved willow (Salix silicicola), Mackenzie hairgrass (Deschampsia mackenzieana), Tyrrell’s willow (Salix planifolia tyrrellii), and floccose tansy (Tanacetum huronense var. floccosum).
The larva is reddish brown with black markings and usually feeds on the foliage of mugwort, although it has also been recorded feeding on Angelica, bilberry, tansy and yarrow.
Hugueninia tanacetifolia, the Tansy-leaved rocket, is a species of flowering plant in the monotypic genus Hugueninia belonging to the mustard family.
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The Latin name of the species means "with leaves of tansy" because of the similarity of the leaves with some species of the genus Tanacetum.
Kan Siu-Nam (Adam Cheng), due to the loss of his daughter (Tansy), divorces his wife, Angela (Rebecca Chan).
They feed on a wide variety of plants and grasses, including Achillea millefolium, wormwood (Artemisia), carrot (Daucus), tansy (Tanacetum), Inula and hawkweed (Hieracium).