Buddleja hieronymi is a species endemic to southern Bolivia and northern Argentina first described and named by Fries in 1905.Norman, E. M. (2000). Buddlejaceae. Flora Neotropica 81. New York Botanical Garden, USAFries, R. E. (1905). Nova Actae Regiae Soc. Sci. Upsal. ser. 4, 1: 117 - 118, t6, f13
Description Buddleja hieronymi is a dioecious shrub 1 – 1.5 m high with greyish rimose bark. The old naked branches often persist, while the youngest branches are tomentulose, bearing small oblong subsessile leaves 0.5 – 3 cm long by 0.4 – 1 cm wide, membranaceous or subcoriaceous, tomentulose to glabrescent above, and tomentose below. The yellowish-white inflorescence comprises one globose head 0.5 – 0.7 cm in diameter formed by 6 – 9 flowers, with occasionally a pair of smaller heads below. The tubular corolla is 2.5 – 3 mm long.
Cultivation The shrub is not known to be in cultivation.
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