John Lindley

“ I propose to name this very curious and interesting genus Loudonia,194 as a tribute to the eminent services rendered to Horticultural Botany by John Claudius Loudon, Esq. author of the Arboretum Britannicum, and of many other valuable works well known in every part of the civilized world. Haloragis cordigera, Fenzl, and probably H. scoparia of the same author, the former of which has two pairs of ovules hanging down from the apex of a single cell in the ovary, and separated, as in the plant under consideration, by a pendulous cord originating between them, may possibly also belong to Loudonia ”

“ Two species are known, with hoary leaves and apparently purple flowers; of which A. incana (Tab. V. A) seems the finest. Two species of the rare genus Halgania have been sent home, both different from those recently described by Endlicher; one of them, H. cyanea,191 is a hispid plant, perhaps an annual, with axillary blue flowers on long stalks, but of no beauty; the other, H. corymbosa,192 is a brilliant herbaceous plant, with long-stalked terminal corymbs of purple flowers. ”

“ Of the beautiful genus Tetratheca there are many species, all apparently peculiar to the colony; and, what is curious, belonging to the pentamerous division of the genus.
Of these T. viminea184 has long smooth slender branches, slightly covered with smooth ovate whorled leaves, and bright purple flowers drooping from the end of the branches; T. rubriseta185 is a bush loaded with purple or rose-coloured flowers, and often clothed with bright red hairs; T. nuda186 is a naked plant, looking like a rush when out of flower, but producing a great quantity of most brilliant crimson blossoms ”