Assertion: canna cultivar | /r/HasProperty | described by kington
Facets:
Source sentences:
text: For horticultural purposes, all Narcissus cultivars are split into 13 divisions as first described by Kington (1998), for the Royal Horticultural Society (RHS), based partly upon flower form (shape and length of corona), number of flowers per stem, flowering period and partly upon genetic background.