C. maxima ‘Purpurea’ 4
C. colurna 8
C. americana 5 dont 1 ‘Winkler’
C. Seilboldiana var. manshurica 3
C. hetrophylla 1
C. heterophylla var. sutchuensis 2
C. avellana ‘auea’ 1
C. avellana x cornuta 2
C. avellana x americana (NY Hybrid) 2
C. avellana var. heterophylla 1
C. x hybrid ‘Mildredensis’ 1084 1
C. x hybrid ‘Mildredensis’ 1094 1
C. x hybrid ‘Bixby’ 1
C. x hybrid 1
C. x ‘Vilmorinii 2