Tomoari authored so many writings as more than 25 books, about 290 volumes by fully taking advantage of his own field works and of extensively reading old and contemporary literature, but the essence of his accomplishments is natural history rather than herbalism.
伴存は、自らのフィールドワークと古今の文献渉猟を駆使して、25部以上・約290巻にも及ぶ多数の著作を著したが、その業績の本質は本草学と言うよりも博物学である。