List: word usually written using kana alone

usually written using kana alone  noun  noun (generic) 

• Japanese elm (Ulmus davidiana var. japonica)

rarely used kanji form  usually written using kana alone  noun  noun (generic) 

• spindle tree (Euonymus alatus f. ciliatodentatus)

usually written using kana alone  noun  noun (generic) 

• konara oak (Quercus serrata), pin oak

irregular kanji usage  usually written using kana alone  noun  noun (generic) 

• Japanese bird cherry (Prunus grayana), Gray's bird cherry, Gray's chokecherry

usually written using kana alone  noun  noun (generic) 

• Japanese spindle tree (Euonymus sieboldianus)

usually written using kana alone  noun  noun (generic) 

• Japanese cherry birch (Betula grossa)

rarely used kanji form  usually written using kana alone  noun  noun (generic) 

• Ilex macropoda (species of holly)

usually written using kana alone  noun  noun (generic) 

• Japanese wing nut (Pterocarya rhoifolia)

usually written using kana alone  noun  noun (generic) 

• heartleaf hornbeam (Carpinus cordata)

usually written using kana alone  noun  noun (generic) 

• Manchurian ash (Fraxinus mandshurica var. japonica)