In addition, he collaborated with Burnat on a number of essays involving flora from the Maritime Alps.
Alps | flora | Swiss Alps | French Alps | Flora of Australia | Dinaric Alps | Bavarian Alps | Flora | Australian Alps | Julian Alps | Southern Alps | Maritime Alps | flora (plants) | Declared Rare and Priority Flora List | William and Flora Hewlett Foundation | Victorian Alps | Nine Black Alps | Napoleon Crossing the Alps | Gurktal Alps | Flora of New Zealand | Apuan Alps | Trinity Alps | Fauna and Flora International | Stubai Alps | Main chain of the Alps | Heidi, Girl of the Alps | Gailtal Alps | Flora Thompson | Flora the Red Menace | Flora (mythology) |
His main interest was in the Violaceae, Theaceae, and Bignoniaceae and, especially in his earlier years, in the flora of the Alps.