Floraire Nursery, Geneva, Switzerland
Henri Correvon was considered the world's greatest specialist upon Alpine plants of Switzerland. Author of many botanical and gardening books including one on Iris (in French) in collaboration with H. Massé [[. His son and grandson were associated with him in the nursery and his alpine gardens were deservedly famous. He created the Linnaea Alpine Garden at Bourg Saint Pierre...and received the R.H.S. Veitch Memorial Gold Medal in 1924. [AIS Check List 1939]
See below:
CORREVON, H. (1895) Les plantes alpines et de rocaille, - description - culture - acclimatation, Bibliothèque d'horticulture (encyclopédie horticole), Iris (iridées) pp. 141-146; avalaible on Gallica.
Correvon, Henri et Massé, H. (1907): Les iris dans les jardins, avalaible on Gallica