Obolinga,a new genus of Mimosaceae tribe ingeae from Hispaniola

Obolinga zanonii Barneby is described as a new monotypic genus from disturbed cloud forest of the Sierra de Bahoruco—Massif de la Selle mountain system in southeastern Haiti and southwestern Dominican Republic. The genus is to be added to tribe Ingeae of Mimosaceae, and is believed on the basis of gross morphology, wood anatomy, and pollen structure to be nearest to the genusCojoba. From this it differs in a massive terete pod completely filled with a stack of large discoid seeds clothed in a lustrous papery testa and inertly dehiscent on the ground. The structurally comparable fruit of the Malayan genusCylindrokelupha, currently referred toArchidendron, is ascribed to parallelism. The species is illustrated with line drawings.     

Reevaluation of Mimosa biuncifera and M. texana (Leguminosae: Mimosoideae)

Mimosa biuncifera, as currently defined in southwestern United States, is shown to comprise two related species,M. biuncifera s. str. andM. texana, distinguished primarily by position of the nodal aculei. Taxonomic synonyms ofM. biuncifera areM. lindheimeri andM. warnockii (the first undisputed, the second provisional);M. texana includesM. wherryana.     

The identity and synonymy of Acacia guilandinae,Mimosa obovata,M. pseudo-obovata,and M. laticifera (Mimosaceae)

Acacia guilandinae DC. is recognized asMimosa guilandinae (DC.) Barneby, endemic to French Guiana and adjoining Amapá, Brazil;M. pseudo-obovata is subordinated as a Brazilian var.pseudo-obovata (Taub.) Barneby to CaribbeanM. ceratonia L.; andM. laticifera is found synonymous withM. obovata Benth. Diagnostic morphological characters of each taxon are presented in key form.     

Tidings of Menispermaceae from interior French Guiana and from the Brazilian state of Bahia

From French GuianaDisciphania moriorum is formally described and illustrated, and a second, imperfectly known member of the genus is provisionally recorded. From BahiaCurarea crassa is new, andAbuta convexa (Vell.) Diels is added to the state flora. A conspectus of Menispermaceae presently known from Bahia, a key to both sexes of the taxa, and brief indications of their ecology are provided.