List: word usually written using kana alone

noun  noun (generic)  usually written using kana alone 

• southern sky
• heavenly bamboo (Nandina domestica), nandina

usually written using kana alone  noun  noun (generic) 

• painted maple (Acer mono)

usually written using kana alone  noun  noun (generic) 

• tall stewartia (Stewartia monadelpha), hime-syara stewartia

usually written using kana alone  noun  noun (generic) 

• Asian melastome (Melastoma candidum)

usually written using kana alone  noun  noun (generic) 

• Japanese pagoda tree (Sophora japonica)

usually written using kana alone  noun  noun (generic) 

• Japanese flowering ash (Fraxinus sieboldiana)

usually written using kana alone  noun  noun (generic) 

• Japanese beech (Fagus crenata), Siebold's beech

usually written using kana alone  noun  noun (generic) 

• kousa dogwood (Cornus kousa), Japanese flowering dogwood

usually written using kana alone  noun  noun (generic) 

• loose-flowered hornbeam (Carpinus laxiflora), akashide

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

• linden arrowwood (Viburnum dilatatum), Japanese bush cranberry