Korean aster

Aster koraiensis is a perennial herb. The height is about 50~60 cm. The leaves are green color, alternate, lanceolate and pinnately lobed. They are 12~19 cm length and 1.5~3 cm width of leaves. The main stem grows from rhizome, a horizontal stem of plant that is found underground. The leaves on the roots, radical leaves, fall when flowers begin to open. Leaflike bracts can be found. The flower is bisexual and pale violet color and has an inflorescence head which diameter is about 4~5 cm (Only one flower per stem). The involucre is 13 mm length, and 8 mm diameter and has four lines of involucral scale. The achene has about 4 mm length and 1.3 mm diameter and lanceolate shape. There is no pappus. It blooms from June to September; the fruits (achenes) mature in November.

Miyamayomena koraiensis originated in Korea and also is naturalized throughout Korea peninsula (South Korea and North Korea). It can be easily found anywhere in Korea (around flower gardens, roadsides, mountains, valley, etc.).