In order to clarify the present status of production and cultivation of exotic cultivated plants
introduced before pre-modern-times, inquiries were made to nursey plant growers about the production
and distribution of 29 woody plants of Rosaceae as well as those to public botanical gardens about
their presence. The results indicate that 11 plants such as Spiraea cantoniensis and Pseudocydonia
sinensis are still produced or distributed by several growers. On the other hand, growers producing
or distributing 13 plants such as Chaenomeles cathayensis and Malus asiatica were very few or no.
A similar situation is observed in botanical gardens. Especially, the domestic cultivation of Malus
asiatica var. rinki, Malus spectabilis, Prunus davidiana, Rosa multiflora var. carnea f. carnea and R.
multiflora var. carnea f. platyphylla is estimated to be very rare or absent at present.
Research papers (publications of university or research institution)
