Fortune employed many different means to transport tea plants , seedlings , and other botanical discoveries , but he is most well known for his use of Nathaniel Bagshaw Ward 's portable Wardian cases to sustain the plants .
Fortune employed many different means to transport tea plants , seedlings , and other botanical discoveries , but he is most well known for his use of cases like small greenhouses called Wardian cases ( as used by Nathaniel Bagshaw Ward ) to keep the plants alive .