|Dianthus superbus var.
longicalycinus, a perennial, inhabits a sunny river beach or
grassland, forming tufts. The stem stands 30-80cm tall, branching at
an upper part and sparsely setting some light reddish-purple 4cm in
diameter flowers on a shoot apex in July-October. The petals divide
torn like threads, which characterizes this species. Additionally,
the bract number in this variety counts 3-4 pairs, which gives a
point to differentiate it from D. superbus var. rupifragus.