The reduction of Nelsonia campestris R.Br. to N. canescens (Lam.) Sprengl. was not justified; N. campestris is a species confined to Australia or, perhaps, to Australia and New Guinea; arguments are adduced against Bentham’s view that N. campestris would be a common tropical weed. Thunbergia arnhemica F. v. Müll. was erroneously sunk in Th. fragrans Roxb.; the latter is confined to India and Ceylon and Th. arnhemica to Australia. Ruellia acaulis R.Br., R. australis Cav., R. pumilio R.Br. and R. spiciflora F. v. Müll. ex Bth. are transferred to a new genus Brunoniella, which is confined to Australia.

Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht

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Naturalis journals & series

Bremekamp, C. E. B. (1964). On the systematic position of the Australian nelsonias and thunbergias and of the Ruellia species which by domin were referred
to Aporuellia clarke. Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht, 213(1), 301–306.