Dissolution of Ipomoea series Anisomerae (Convolvulaceae)

AUISTIN, [). F (Department of Biological Sciences, Florida Atlantic LUniversity, Boca Raton, FL 33431). Dissolution of IPaOinOaC series Anisonierace (Convolvuilaceae). J. Torrey Bot. Club 124:140-159. 1997.-Since the Anisonmerae was proposed by House in 1908, all but three species have been move(i into other parts of the genus. Morphological study now indicates that these three species should be placed elsewhere. Ipaaomoca aniSO(nII(erS belongs in sect. Erpiponaoea. Iponoeaa squamaiosa and 1. lindlenii do not seemii to be closely related to each otheror to 1. anisomeres. Thus, this series was polyphyletic. The species were originally grouped together because o0 convergent evolution in sepal inequality. Placement is proposed foir all namles inclujded in 1908. The original species are tnow placed in Ipomaoea sect. Eriosperinum (ser. Batatas, ser. Eriospermnum, ser: Miraindinae); lpO))O('e sect Erpj)ipnomoca; Ipoanoea sect. Exogoniutn; Ipomaoca sect. Plharbitis ser. Tvriantllinae; to an Australian Ioainoca alliance (section unknown); and to the Old World genus Xenostegia. Several taxa confused with Ipomnoca anisomeres and 1. squanoasa are discussed. Ipomaoca pedicellaris is moved from ser. Setosae to sect. ErlpipIonoaca. Nine species are described and illustrated, including the Hawaiian endemic Ipotnoea tuboides (sect. Exoagonium), and a new Panamanianl endemic Ipomaoet eremionobroahai D. F Austin sp. nov. (sect. Eriospermum). A key is provided for identification. A new section and series are proposed for lpon)oea subg. Quaionclit sect. Trioloares J. A. McDonald, sect. nov., and Ipaomoea subg. Quarnoclit sect. Tricolores ser. Microsepalae D. F Aulstin, comb. inov.