List: word usually written using kana alone

usually written using kana alone  noun  noun (generic) 

• blue passion flower (Passiflora caerulea)

usually written using kana alone  noun  noun (generic) 

• Chinese white olive (Canarium album)
• olive (Olea europea)

usually written using kana alone  noun  noun (generic) 

• Asian stubtail (Urosphena squameiceps)

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

• Japanese marten (Martes melampus)
• marten (any arboreal weasel-like mammal of genus Martes)

usually written using kana alone  noun  noun (generic) 

• Tsushima marten (Martes melampus tsuensis, a subspecies of the Japanese marten)

usually written using kana alone  noun  noun (generic) 

• stone marten, beech marten (Martes foina)

usually written using kana alone  noun  noun (generic) 

• tawny milkcap mushroom (Lactarius volemus)

usually written using kana alone  noun  noun (generic) 

• Astilbe microphylla (species of astilbe)

usually written using kana alone  noun  noun (generic) 

• European silver fir (Abies alba)

usually written using kana alone  noun  noun (generic) 

• Pacific silver fir (Abies amabilis)