I-ROSACEAE=MALACEAE KEY
II-SORBUS TREE OR SHRUB LEAVES PINNATE
1-SORBUS AMERICANA
2- SORBUS SCOPULINA
III-PYRUS COMMUNIS PEAR POME WITH GRID CELLS
IV-MALUS APPLES TREES WITH SIMPLE CYMES
1-MALUS CORONARIA
2-MALUS BACCATA
3-MALUS IOENSIS
4- MALUS PUMILA
5-MALUS DOMESTICA APPLE AN EXOTIC SPECIES
V-ARONIA LOW SHRUBS MIDRIB GLANDULAR
1-ARONIA ARBUTIFOLIA
2-ARONIA X PRUNIFOLIA
VI= AMELANCHIER UNARMED SHRUB FLOWER USUALLY RACEMOSE POME SMALL
GLOBOSE
1-AMELANCHIER CANADENSIS
2- AMELANCHIER INTERMEDIA
VII= CRATAEGUS SHRUBS OR SMALLTREES USUALLY SPINI POME SMALL,MANY
SPECIES
1- CRATAEGUS CRUS -GALLI
2-CRATAEGUS BERBERIFOLIA
7-CRATAEGUS FECUNDA
8-CRATAEGUS DISPESSA
15-CRATAEGUS SUCCULENTA VAR NEOFLUVIALIS
20-CRATAEGUS LAURENTIANA
27-CRATAEGUS LUMARIA
32-CRATAEGUS STONEI
33-CRATAEGUS PADIFOLIA
34-CRATAEGUS PHAENOPYRUM
35-CRATAEGUS RUBELLA
36-CRATAEGUS FLAVA
37-CRATAEGUS FLABELLATA
38-CRATAEGUS MACROSPERMA
39-CRATAEGUS GRAYANA
40-CRATAEGUS SCHUETTEI VAR SCHUETTEI
41-CRATAEGUS POPULNEA
42-CRATAEGUS PRUINOSA VAR VIRELLA
43-CRATAEGUS PRUINOSA VAR RUGOSA
44- CRATAEGUS PRUINOSA VAR DISSONA
45-CRATAEGUS PRUINOSA
46-CRATAEGUS JESUPII
47-CRATAEGUS RUGOSA
48-CRATAEGUS BEATA
49-CRATAEGUS GRATTINGERII
50-CRATAEGUS KELLOGII
51-CRATAEGUS HOLMESIANA
52-CRATAEGUS DISPESSA
53-CRATAEGUS LANUGINOSA
54-CRATAEGUS COCCINIOIDES
56-CRATAEGUS COCCINEA VAR PRINGLEI
57-CRATAEGUS MOLLIS
58-CRATAEGUS MONOGYNA
59-CRATAEGUS MARSHALLII
60-CRATAEGUS SPATHULLATA
61-CRATAEGUS SUBMOLLIS
62-CRATAEGUS UNIFLORA
63-CRATAEGUS DOUGLASII
64-CRATAEGUS PHANOPYRUM
VIII=COTONEASTER COCCINEA SHRUB SLENDER SPINE WHITE FLOWER
IX-PRUNUS TREES OR SHRUB ,BARK EXUDING GUM, FLOWER IN VARIOUS RACEMES,FRUIT ADRUPE
1- PRUNUS AMERICANA
2- PRUNUS ANGUSTIFOLIA
3- PRUNUS AVIUM
4- PRUNUS CERASUS
5- PRUNUS GRACILIS
6- PRUNUS HORTULANA
7- PRUNUS INSITITIA
8-PRUNUS MAHALEB
9- PRUNUS MARITIMA
10- PRUNUS PENSYLVANICA
11- PRUNUS NIGRA
12- PRUNUS PERSICA
13 PRUNUS PUMILA VAR BESSEYI
14-PRUNUS PUMILA VAR SUSQUEBRANAE
15- PRUNUS PUMILA
16- PRUNUS UMBELLATA