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

MORONI, PABLO; O'LEARY, NATALY

ANNALS OF THE MISSOURI BOTANICAL GARDEN

MISSOURI BOTANICAL GARDEN

Lugar: Saint Louis, Estados Unidos de América; Año: 2019 vol. 104 p. 355 - 399

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 morecomprehensive and profound study of herbarium material. The analyses of the morphologicalfeatures support the recognition of 13 Boucheaspecies. A new combination is proposed for Stachytarphetabifurca Benth. (= B. bifurca(Benth.) P. Moroni & N. O?Leary), and B.boyacana var. glabrata Moldenke is elevatedto the species rank. Eight taxa are here synonymized: B. inopinata Moldenke (= B.agrestis Schauer), B. prismaticavar. brevirostra Grenzeb. (= B.bifurca), B. beckii Moldenke (= B.boliviana (Kuntze) Moldenke), B. flabelliformisM. E. Jones (= B. dissecta S. Watson), B. prismaticavar. laciniata Grenzeb. (= B.dissecta), S. kingii Moldenke (= B. nelsoniiGrenzeb.), B. boyacana Moldenke (= B. prismatica (L.) Kuntze) and B. spathulatavar. longiflora Moldenke (= B. spathulataTorr.). Lectotypes are designated for the names B. incrassata Lange(second-step), B.rusbyi Moldenke (second-step) and S. laxifloraTurcz. Furthermore, B. boliviana is reported for the first timegrowing in Argentina, B. notabilis Moldenkein Ecuador and B. rusbyi in Brazil and Peru.