Ergebnisse der Polak'schen Expedition nach Persien' (Memoirs of the Imperial Academy, Vienna, 1885-1886); 'Beiträge zur Flora v Lycien, Carien u Mesopotamien' (ibid, 1885-1886); 'Die Arten der Gattung Ephedra' (ibid, 1889); 'Pedaliaceae and Martyniaceae' (Engler u Prantl Natürliche Pflanzenfamilien, 1895); 'Flora of Mount Kinabalu in North Borneo' (Trans Linn Soc, 1894); 'Melocanna bambusoides' (ibid, 1904); 'Structure of 'Sararanga sinuosa' (Journ Linn Soc, 1896); 'Dicellandra and Phaeoneuron' (ibid, 1900); 'Monograph of the Indian Aconites' (Annals, Royal Botanic Garden, Calcutta, 1905).
* "Botan Ergebnisse der Polak’schen Expedition nach Persien" (Memoirs of the Imperial Academy, Vienna, 1885—1886);* "Beitrage zur Flora v Lycien, Carien u Mesopotamien" (ibid, 1885—1886);* "Die Arten der Gattung Ephedra" (ibid, 1889);* "Pedaliaceae and Martyniaceae" (Engler u Prantl Naturliche Pflanzen-familien, 1895);* "Flora of Mount Kinabalu in North Borneo" (Trans Linn Soc, 1894);* "Melocanna bambusoides" (ibid, 1904);* "Structure of 'Sararanga sinuosa" (Journ Linn Soc, 1896);* "Dicellandra and Phaeoneuron" (ibid, 1900);* "Monograph of the Indian Aconites" (Annals, Royal Botanic Garden, Calcutta, 1905).