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Xiphochaeta Poepp., Nov. Gen. Sp. Pl. 3: 44 (1843).

Type: Xiphochaeta aquatica Poepp.

References

Esteves, R. L. & V. Gonalves-Esteves. (2003). Redelimita o de Stilpnopappus Mart. ex DC. (Vernonieae-Asteraceae). Bradea 9(14): 7792.

Robinson, H. (1992). The Asteraceae of the Guianas, III: Vernonieae and restoration of the genus Xiphochaeta. Rhodora 94(No. 880): 348--361.

Xiphochaeta aquatica Poepp., Nov. Gen. Sp. Pl. 3: 44, tab. 250 (1843). Type: [Brazil:] Crescit in ripis paludosis sylvaticis fluminis Teff in Brasilia boreali. Lectotype (selected by Esteves, 2003: 85): ''a iconographia citada [tab. 250] citada. Type material should certainly be looked for in W where Poeppig material is held.

Stilpnopappus viridis Benth. ex Baker in Mart., Fl. Bras. 6(2): 137 (1873), nom. illegit. superfl. pro Xiphochaeta aquatica Poepp.

Stilpnopappus aquaticus (Poepp.) M. O. Dillon, Fieldiana, Bot. n.s. 11: 4 (1982).

Bolivia (?), Brazil, Guyana, Peru, Northern South America

Zexmenia La Llave & Lex., Nov. Veg. Descr., fasc. 1: 13 (1824).

Type: Zexmenia serrata La Llave

Reference

Jones, W. W. (1905). A revision of the genus Zexmenia. Contr. Gray Herb. No. 30, Proc. Amer. Acad. Arts 41(7): 143167.

Zexmenia columbiana S. F. Blake, J. Bot. 53: 306 (1915) = Oblivia mikanioides (Britton) Strother

*Zexmenia foliosa Rusby ex W. W. Jones, Proc. Amer. Acad. Arts 41: 162 (1905). Type: Bolivia: Guanai-Tapuani, Bang, no. 1340. Holotype: ?NY; isotypes: US, Z (000004109).

*Zexmenia foliosa Rusby, Bull. New York Bot. Gard. 4(14): 312 (1907), nom. illegit. superfl. Type: [Bolivia:] [Bang] 1340, Zexmenia sp.? . Holotype: NY.

Bolivia (La Paz).

*Zexmenia foliosa Rusby, Bull. New York Bot. Gard. 4(14): 312 (1907), nom. illegit. superfl. = Zexmenia foliosa Rusby ex W. W. Jones

Zexmenia helianthoides (Kunth) B. D. Jacks. var. rudis (Baker) Hassler f. lanceolata Hassler, Feddes Repert. Spec. Nov. Regni Veg. 14(10-15): 178 (1915) = Wedelia rudis (Baker) Benth. ex H. Rob.

Zexmenia helianthoides (Kunth) B. D. Jacks. var. rudis (Baker) Hassler f. subhastata Hassler, Feddes Repert. Spec. Nov. Regni Veg. 14(10-15): 178 (1915) = Wedelia rudis (Baker) Benth. ex H. Rob.

*Zexmenia herzogii Hassl., Feddes Repert. Spec. Nov. Regni Veg. 7: 357 (1909) = Dimerostemma herzogii (Hassl.) M. D. Moraes

*Zexmenia mikanioides (Britton) S. F. Blake, J. Bot. 53: 200 (1915) = Oblivia mikanioides (Britton) Strother

Zexmenia mikanioides (Britton) S. F. Blake var. australis (S. F. Blake) Hartman & Stuessy, Syst. Bot. 4(1): 55 (1979) = Oblivia mikanioides (Britton) Strother