Die Frage
ist geklärt. Barry Machin schreibt im
The-Hardy-Plant-Journal (2012, 1, S. 32 f.):
"In 1905 J. G. Jack of the Arnold Arboretum in Boston collected a chrysanthemum species in Korea. It was grown for a number of years
before it was noticed by Alex Cumming, a chrysanthemum breeder.
He wrongly called it C. coreanum , but described his ‘Korean Daisy’ as
vigorous, well branched, 30–120cm tall, and floriferous, with 5cm alabaster-white flowers aging to carmine pink. Moreover it was very hardy, and its
tough petals continued to open and flourish despite overnight frosts. He had been searching for a plant like this for years."
und:
"Amos Perry was actually crossing C. morifolium (the early florist’s double chrysanthemum) with the very hardy C. zawadskii
variety to produce Rubellums. In America,
Roderick Cumming had written in his 1964 book that the Korean daisy that his
father had used to produce the Koreans was not C. coreanum but C. sibiricum – which we now know is actually C. zawadskii
var. sibiricum. So it is apparent that the two breeders on both sides of the Atlantic were actually making very similar crosses, at
more or less the same time, to produce both the Koreans and Rubellums. It is not surprising that their main characteristics
are similar."
Allerdings behandeln die koreanische Online-Flora (
Korean Peninsula Flora) und auch ThePlantList
Chrysanthemum sibiricum (und
Chrysanthemum zawadzkii var.
latilobum) heute als Synonym für
Chrysanthemum naktongense.
Von beiden Arten gibt es zahlreiche Abbildungen unter koreanischer Schreibweise. Die Arten scheinen dort nicht selten zu sein.
C. zawadzkii (im engeren Sinne)C. naktongense(Korrektheit des Suchergebnisses und der Artbestimmung bleiben natürlich jeweils zu prüfen.)