List: word usually written using kana alone

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

• long-eared owl (Asio otus), northern long-eared owl

usually written using kana alone  noun  noun (generic) 

• mining bee (of family Andrenidae)

usually written using kana alone  noun  noun (generic) 

• pipefish (esp. the seaweed pipefish, Syngnathus schlegeli)

usually written using kana alone  noun  noun (generic) 

• pygmy waterlily (Nymphaea tetragona)

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

• scalpel sawtail (Prionurus scalprum)

usually written using kana alone  noun  noun (generic) 

• shipworm (esp. naval shipworm, Teredo navalis), teredo

usually written using kana alone  noun  noun (generic) 

• shortawn foxtail (Alopecurus aequalis)

usually written using kana alone  noun  noun (generic) 

• small cranberry (Vaccinium oxycoccos)

usually written using kana alone  noun  noun (generic) 

• striped marlin (Tetrapturus audax)

usually written using kana alone  noun  noun (generic) 

• sweet violet (Viola odorata)