(1946)  Page(s) 137.  
 
EARLDOMENSIS (Hybrid of species) is a hybrid of R. Hugonis with R. omeiensis with the peculiar idiosyncrasy of producing wood both thorny and thornless. the flowers, which appear first in late May, are single and of bright yellow. R. earldomensis makes a bush of some six feet in height, which should be left unpruned. Courtney Page 1934. D. TG. NF. Not to be pruned. S. May- June and October. Hardy.