Prain war Herausgeber der Bände 133 bis 146 des Curtis’s Botanical Magazine (1907 bis 1920) sowie der Bände 28 bis 30 von Hooker's Icones Plantarum (1905 bis 1994). Auch die Bände 6(2) und 9 der Flora of Tropical Africa von Daniel Oliver gab er heraus. Für dieses Werk bearbeitete er die Teile „Euphorbiaceae“ (in Band 6(1), zusammen mit Nicholas Edward Brown und John Hutchinson) sowie „Cycadaceae“ (in Band 6(2)).
Bengal plants. 2 Bände, Botanical Survey of India, Kalkutta 1903 (Digitalisate).
Noviciae indicae: some additional species of Indian plants. West, Newman & Co., London 1905.
Contributions to Indian botany. West, Newman & Co., London 1906 (Digitalisat).
Zeitschriftenbeiträge
The Angami Nagas. In: Revue coloniale internationale. Band 2, 1887, S. 472–494 (Digitalisat).
The species of Pedicularis of the Indian Empire and its frontiers. In: Annals of the Royal Botanic Garden, Calcutta. Band 3, 1890, S. 1–196 (Digitalisat).
A list of Laccadive plants. In: Scientific memoirs by medical officers of the army of India. Teil 5, 1890, S. 47–69 (Digitalisat).
An account of the genus Argemone. In: Journal of botany, British and foreign.:
A revision of the genus Chelidonium. In: Bulletin de l’Herbier Boissier. Band 3, Nr. 11, 1895, S. 570–587 (Digitalisat).
An account of Corydalis persica Cham. et Schlecht. with remarks on certain allied species of Corydalis Vent. In: Bulletin de l’Herbier Boissier. Band 7, Nr. 3, 1899, S. 162–177 (Digitalisat).
The species of Dalbergia of South-eastern Asia. In: Annals of the Royal Botanic Garden, Calcutta. Band 10, 1905 (Digitalisat).
A sketch of the life of Francis Hamilton (once Buchanan), sometime Superintendent of the Honourable Company’s Botanic Garden, Calcutta. In: Annals of the Royal Botanic Garden, Calcutta. Band 10, Nr. 2, 1905, S. I-LXXV (Digitalisat).
Sir Thomas Hanbury, K.C.V.O. In: Bulletin of Miscellaneous Information. London 1907, S. 132–136 (Digitalisat).
[Sir Richard Strachey, R.E., G.C.S.I., F.R.S.] In: Bulletin of Miscellaneous Information. London 1908, S. 127–129 (Digitalisat).
[Sir George King, 1840–1909.] In: Proceedings of the Royal Society B: Biological Sciences. Band 81, Nr. 551, 1909, S. XI–XXVIII (Digitalisat, doi:10.1098/rspb.1909.0046).
[Sir George King. List of works] In: Bulletin of Miscellaneous Information. London 1909, S. 193–196 (Digitalisat).
Sir Joseph Dalton Hooker, 1817−1911. In: Bulletin of Miscellaneous Information. London 1912, S. 1–34 (Digitalisat).
James William Helenus Trail. In: Bulletin of Miscellaneous Information. London 1919, S. 378–388 (Digitalisat).
“John” Roxburgh. In: Journal of botany, British and foreign. Band 57, 1919, S. 28–34 (Digitalisat).
James William Helenus Trail. In: Proceedings of the Royal Society B: Biological Sciences. Band 91, Nr. 641, 1920, S. VII–XI (doi:10.1098/rspb.1920.0020).
Prof. J. W. H. Trail. [Publications]. In: Bulletin of Miscellaneous Information. London 1920, S. 32–33 (Digitalisat).
[Sir William Turner Thiselton-Dyer.] In: Proceedings of the Linnean Society London. Band 141, Nr. 1, 1930, S. 147–149 (doi:10.1111/j.1095-8312.1930.tb01332.x).
An account of the genus Dioscorea in the East. Part I: The species which twine to the left. In: Annals of the Royal Botanic Garden, Calcutta. Band 14, Nr. 1, 1936 – mit Isaac Henry Burkill (1870–1965).
↑C. D. Waterston, A. Macmillan Shearer: Biographical index of former Fellows of the Royal Society of Edinburgh 1783–2002. Part II: K–Z. 2006, ISBN 0-902198-84-X, S. 747 (PDF).