Rupert C. Barneby

Atlas of North American astragalus

Atlas of North American Astragalus , Atlas of North American Astragalus , مرکز فناوری اطلاعات و اطلاع رسانی کشاورزی

The occurrence of nitro-toxins in North American astragalus (Fabaceae)

Leaves from herbarium specimens of 505 species and varieties of North AmericanAstragalus were examined for the presence of organic nitro-toxins. The relative concentration of these nitro compounds was determined for the 263 nitro-containing species and varieties. Chemotaxonomic relationships existed among many species so that the presence, molecular configuration, and concentration of the nitro-toxins in the species examined could be used to predict the occurrence of these toxins in other taxa. Geographic differences were also noted for varieties of one species,A. robbinsii (Oakes) A. Gray.

Neotropical Fabales at NY: asides and oversights

Miscellaneous observations on neotropical Fabales include descriptions ofEntada polystachya var.simplicata Barneby,Chamaecrista arachiphylla Barneby andCh. coradinii Barneby, andSwartzia invenusta Barneby; new combinations are proposed in generaTachigali Aublet andPeltophorum Bentham; a key to American species ofPeltophorum Vogel and new taxonomies for generaSchizolobium Vogel,Phyllocarpus Riedel, andGuibourtia Bennett are given.

The occurrence of nitrotoxins in Old World and South American astragalus (Fabaceae)

Leaves from herbarium specimens representing 404 species and 89 sections of Old World and South AmericanAstragalus were examined for nitro compounds. Thirty-three species contained nitro compounds. This included all species examined of sectionUliginosi while sectionsSewerzowia, Hemiphaca, Hemiphragmium, Oroboidei, Brachycarpus, Melanocercis, andMelilotopsis also contained significant percentages of nitro-containing species

Increments to the genus Mimosa (Mimosaceae) from South America

Four new species are described and discussed: from BoliviaM. (sect.Habbasia ser.Setosae)huanchacae; from SE brazilM. (sect.Habbasia ser.Pachycarpae)chiliomera andM. (sect.Mimosa)murex; and from EcuadorM. (sect.Mimosa subser.Polycarpae)Loxensis. The two Brazilian species are illustrated.

Centennial beans: A miscellany of American Fabales

Descriptions, diagnoses and commentary are presented for new or critical taxa of the three fabalean families: in Mimosaceae: Mimosa pedalis, nom. provis. (illustr.) and Pithecellobium micranthum Benth. ≡ Acacia acuifera Benth.; in Caesalpiniaceae: Senna monilifera Irwin & Barneby, sp. nov., Chamaecrista coradinii Irwin & Barneby, sp. nov, Macrolobium cidii Barneby, sp. nov. (illustr.), M. cowanii Barneby, sp. nov. (illustr.), M. grallator Barneby, sp. nov. (illustr.) and Dicymbe praeruptorum Barneby, sp. nov. (illustr.); and in Fabaceae: Swartzia ingens Barneby, sp. nov. (illustr.), Lecointea hatschbachii Barneby sp. nov. (illustr.), and Astragalus cremnophylax var. hevronii Barneby, var. nov.

Toward a census of genus Mimosa (Mimosaceae) in the Americas: a new species from Mexico (Baja California Sur) and two from planaltine Brazil (Goiás, Minas Gerais)

Three new species of Mimosa are described: M. (sect. Batocaulon) epitropica Barneby & León de la Luz from Mexico (Baja California Sur); and two from planaltine Brazil, M. (sect. Habbasia) bispiculata Barneby and M. (sect. Mimosa) demissa Barneby. The affinity of each is discussed, and all are illustrated.

Monographic studies in cassia (Leguminosae: Caesalpinioideae). IV. supplementary notes on section apoucouita Bentham

Supplementing the last revision (Irwin & Rogers, 1967) and reflecting ten years productive exploration in Brazil, these notes present a redefinition of the section, keys to all taxa, some of them newly modified in circumscription or rank, full synonymy, statements of range, and descriptions ofC. aspleniifolia (Espírito Santo),C. eitenorum (MaranhÃo to Bahia, 2 vars.),C. compitalis (s. Bahia) andC. boyanii (Territorio do Roraima), these raising the census of the section from 13 to 15 species.

The genus Mimosa (Mimosaceae) in Bahia, Brazil: new taxa and nomenclatural adjustments

Preliminary to a second edition of Checklist of the Leguminosae of Bahia by G. P. Lewis (K), 15 new species and seven new varieties of Mimosa are described, and nine new nomenclatural combinations are proposed. The relationship of each new entity is consideredl; 16 are illustrated. Some special terms adapted to the description of Mimosa are defined.

A NEW SPECIES OF ASTRAGALUS (FABACEAE) FROM TENNESSEE'S CENTRAL BASIN

Astragalus bibullatus Barneby & Bridges, a relative ofA. crassicarpus Nutt. vicariant in cedar glades of central Tennessee, is described and illustrated, and its restricted habitat and associated species are discussed.