Insights into the systematics of tribe Duranteae (Verbenaceae): A taxonomic revision of the New World genus Bouchea

MORONI, PABLO DANIEL; O'LEARY NATALY

ANNALS OF THE MISSOURI BOTANICAL GARDEN

MISSOURI BOTANICAL GARDEN

Lugar: Saint Louis, Estados Unidos de América; Año: 2019 vol. 104

0026-6493

A taxonomic revision of Bouchea (Duranteae, Verbenaceae) is presented, updating the last formal revision of the genus by Moldenke from 1940, with a more comprehensive and profound study of herbarium material. The analyses of the morphological features support the recognition of 13 Bouchea species. A new combination is proposed for Stachytarpheta bifurca Benth. (= B. bifurca (Benth.) P. Moroni & N. O?Leary), and B. boyacana var. glabrata Moldenke is elevated to the species rank. Eight taxa are here synonymized: B. inopinata Moldenke (= B. agrestis Schauer), B. prismatica var. brevirostra Grenzeb. (= B. bifurca), B. beckii Moldenke (= B. boliviana (Kuntze) Moldenke), B. flabelliformis M. E. Jones (= B. dissecta S. Watson), B. prismatica var. laciniata Grenzeb. (= B. dissecta), S. kingii Moldenke (= B. nelsonii Grenzeb.), B. boyacana Moldenke (= B. prismatica (L.) Kuntze) and B. spathulata var. longiflora Moldenke (= B. spathulata Torr.). Lectotypes are designated for the names B. incrassata Lange (second-step), B. rusbyi Moldenke (second-step) and S. laxiflora Turcz. Furthermore, B. boliviana is reported for the first time growing in Argentina, B. notabilis Moldenke in Ecuador and B. rusbyi in Brazil and Peru.