Isosyntype for Verbena bonariensis var. brevibracteata Kuntze Catalog Number: US 700691 Collection: Smithsonian Institution, National Museum of Natural History, Department of Botany Preparation: Pressed specimen Collector(s): O. Kuntze Year Collected: 1891 Locality: Montevideo, Uruguay, South America
Isosyntype: Kuntze, O. 1898. Rev. Generum Pl. 3: 254.
This perennialherb produces one or more hairless or slightly bristly erect stems growing 40 centimeters to well over one meter tall. The rough-haired leaves are somewhat lance-shaped and have serrated edges, the blades measuring up to 10 centimeters in length. The inflorescence is made up of one to eleven erect spikes of flowers which are dense at the tip and more open on the lower part. Each small tubular flower has a purple corolla about half a centimeter wide.