Commemorating Pierre d’Incarville (1706-57), a French Jesuit missionary to China (Bignoniaceae). A genus of about 6 species of herbaceous perennials, first introduced in the mid-nineteenth century, hardy or nearly hardy in suitable conditions. Species cultivated I. delavayi, 2 feet, rose-pink trumpet shaped flowers in May and June. I. grandiflora, 14 feet, large, deep rose-red flowers with orange tube, and throat […]