generally chrysanthemums have the cluster of associations with autumn, chilliness, sorrow, dwindling, and yet the last burst of fragrance etc. and this poem is all on them...
the internet use of it is not as expansive as queer that I’ve seen? (maybe curved in opposition to straight) chrysanthemums now are more accurately the coarse part of anatomy ie “to have someone hankering after one’s chrysanthemum” (not particularly elegant nor pleasing)
Apparently it’s the Rubus rosifolius var. coronarius.