New segregates from the Neotropical genus Stryphnodendron (Leguminosae, Caesalpinioideae, mimosoid clade)

Non-monophyly is a prominent issue in mimosoid legumes, even in some of the less speciose genera such as the neotropical genus Stryphnodendron. This genus includes 35 species occurring from Nicaragua to Southern Brazil mostly in humid forests and savannas. Previous taxonomic studies of Stryphnodendron have highlighted morphologically distinct groups within the genus, recognized by differences on leaves (number of pinnae and size of leaflets), inflorescences (a simple or compound thyrse), and fruit types (legume, nucoid legume or follicle). Recent phylogenetic analyses have confirmed the non-monophyly of Stryphnodendron, supporting the recognition of three independent and morphologically well-delimited genera. Here we re-circumscribe Stryphnodendron and propose the two new genera Gwilymia and Naiadendron. In addition, we also provide an updated taxonomic account of the closely related genus Microlobius, including the proposal of a lectotype for the single species in the genus

Genetic conservation of small populations of the endemic tree Swartzia glazioviana (Taub.) Glaz. (Leguminosae) in the Atlantic Forest

Swartzia glazioviana is a threatened legume tree species from the Brazilian Atlantic Forest characterized by aggregations of individuals and endemism to an area with extensive human occupation. It is critical to conduct studies on the species to conserve the remaining populations. Using ten nuclear microsatellite loci, we examined the genotypic and genetic diversity and structure, inbreeding, stand-level spatial genetic structure (SGS), effective population size, mating system, and pollen flow in three isolated remnant populations, aiming to inform conservation strategies. All adult individuals found in the populations were mapped and sampled and open-pollinated seeds were collected from two populations. The genotypic diversity (>0.85) indicates that sexual reproduction is predominant and the short distance between ramets indicates that asexual reproduction occurs by root development. In general, populations present SGS which is explained, in part, by root development. The genetic differentiation among populations was greater between more distant populations, suggesting a gene dispersal pattern of isolation by distance. Pollen flow (>27%) indicates that populations are not reproductively isolated, but fertilization followed an isolation by distance pattern. The outcrossing rate was high (tm > 0.8), but some mating occurred among related individuals (tm-ts > 0.1) and were correlated (rp > 0.15), indicating inbreeding and varying levels of relatedness within families. Inbreeding was higher in seed cohorts than adults, suggesting selection against inbred individuals between seed and adult stages. The results are discussed considering in situ conservation and strategies for seed collection for environmental reforestation. © 2017, Springer Science+Business Media Dordrecht

DNA Microsatellite Markers for Swartzia glazioviana (Fabaceae), a Threatened Species from the Brazilian Atlantic Forest

Premise of the study: Development and characterization of a set of DNA microsatellite markers for Swartzia glazioviana (Fabaceae), a naturally rare and threatened tree species, were carried out to investigate its conservation genetics. Methods and Results: Through an enriched genomic library procedure, 10 DNA microsatellite loci were isolated and characterized for the species. The mean expected heterozygosity was 0.776 (0.424-0.894). Cross-species amplifications of these loci were successfully tested for six congener taxa (S. apetala var. apetala. S. flaemingii, S. langsdorffii, S. macrostachya, S. myrtifolia var. elegans, and S. simplex var. continentalis). Conclusions: The 10 polymorphic microsatellite markers developed are quite informative and will provide a valuable resource to study the population and conservation genetics of S. glazioviana and other Swartzia species. © 2016 Spoladore et al. Published by the Botanical Society of America

DNA Microsatellite Markers for Swartzia glazioviana

PREMISE OF THE STUDY: Development and characterization of a set of DNA microsatellite markers for Swartzia glazioviana (Fabaceae), a naturally rare and threatened tree species, were carried out to investigate its conservation genetics. METHODS AND RESULTS: Through an enriched genomic library procedure, 10 DNA microsatellite loci were isolated and characterized for the species. The mean expected heterozygosity was 0.776 (0.424–0.894). Cross-species amplifications of these loci were successfully tested for six congener taxa (S. apetala var. apetala, S. flaemingii, S. langsdorffii, S. macrostachya, S. myrtifolia var. elegans, and S. simplex var. continentalis). CONCLUSIONS: The 10 polymorphic microsatellite markers developed are quite informative and will provide a valuable resource to study the population and conservation genetics of S. glazioviana and other Swartzia species

A revision of the neotropical Mucuna species (Leguminosae—Papilionoideae).

The genus Mucuna comprises approximately 105 tropical and sub-tropical species, with the highest diversity occurring in the Paleotropics. In the Neotropics, 13 new species have been described recently and a number of regional floras have been published. A recent floristic treatment for Colombia has summarized the Mucuna species found in the Neotropics, but since then many new species and new geographical records have been published. A complete taxonomic treatment of all neotropical species and an identification key to all neotropical taxa is currently lacking. The aim of this study is to present a complete taxonomic account of the species of Mucuna occurring in the Neotropics. Descriptions of 25 taxa (24 species and one variety) are included in the treatment, including type specimen details, synonymy, illustrations, distribution maps, and preliminary conservation assessments for each species, together with a species identification key

FIGURE 16 in A taxonomic revision of the genus Eperua (Leguminosae, Detarioideae, Detarieae)

FIGURE 16. Eperua banaensis and Eperua obtusata: A. leaflets, upper leaflet obovate, E. banaensis; B. leaflets, upper pair elliptic to oblong, E. obtusata; C. intramarginal vein with one intramarginal vein, E. obtusata; D. intramarginal vein with one intramarginal vein, E. banaensis; E. pellucid-punctate blade, E. obtusata. Specimens, A, D: Collela M. et al. 1864; B, C, E: Coomes D. 207. Photos E.A. Fortes.Published as part of Fortes, Elenice A., Dos, Ilka P., Steege, Hans Ter, Aymard, Gerardo, Secco, Ricardo De S., Martins-Da-Silva, Regina Célia V. & Mansano, Vidal F., 2023, A taxonomic revision of the genus Eperua (Leguminosae, Detarioideae, Detarieae), pp. 1-127 in Phytotaxa 617 (1) on page 25, DOI: 10.11646/phytotaxa.617.1.1, http://zenodo.org/record/838976

FIGURE 45. Eperua oleifera. A in A taxonomic revision of the genus Eperua (Leguminosae, Detarioideae, Detarieae)

FIGURE 45. Eperua oleifera. A. fruiting branchlet, var. oleifera.; B. flowering branchlet, var. campestris; C adaxial petal, var. campestris; D. base of the stamens joined in a diadelphous sheath, var. campestris; E. anther and filament, var. campestris; F. carpel, var. campestris; G. stigma, var. campestris. Specimens, A: Zarucchi J.L. et al. 2935; B: Zarucchi J.L. et al. 2842; C–E: Schultes R.E. & López F. 10337. Illustrated by Carlos Alvarez.Published as part of <i>Fortes, Elenice A., Dos, Ilka P., Steege, Hans Ter, Aymard, Gerardo, Secco, Ricardo De S., Martins-Da-Silva, Regina Célia V. & Mansano, Vidal F., 2023, A taxonomic revision of the genus Eperua (Leguminosae, Detarioideae, Detarieae), pp. 1-127 in Phytotaxa 617 (1)</i> on page 79, DOI: 10.11646/phytotaxa.617.1.1, <a href="http://zenodo.org/record/8389766">http://zenodo.org/record/8389766</a&gt

FIGURE 44 in A taxonomic revision of the genus Eperua (Leguminosae, Detarioideae, Detarieae)

FIGURE 44. Eperua oleifera var. oleifera: A. habit; B. trunk; C. inner bark and sap-wood and heartwood; D. leaf; E. flower, lateral view; F. inflorescence; G. stamens joined in a diadelphous sheath. Photos, F. Farroñay.Published as part of Fortes, Elenice A., Dos, Ilka P., Steege, Hans Ter, Aymard, Gerardo, Secco, Ricardo De S., Martins-Da-Silva, Regina Célia V. & Mansano, Vidal F., 2023, A taxonomic revision of the genus Eperua (Leguminosae, Detarioideae, Detarieae), pp. 1-127 in Phytotaxa 617 (1) on page 78, DOI: 10.11646/phytotaxa.617.1.1, http://zenodo.org/record/838976

FIGURE 42 in A taxonomic revision of the genus Eperua (Leguminosae, Detarioideae, Detarieae)

FIGURE 42. Eperua obtusata: flowering branchlet showing the 2-jugate leaves, and axillary inflorescence. Specimen, Williams L. 16183 (holotype). Illustrated by Carlos Alvarez.Published as part of Fortes, Elenice A., Dos, Ilka P., Steege, Hans Ter, Aymard, Gerardo, Secco, Ricardo De S., Martins-Da-Silva, Regina Célia V. & Mansano, Vidal F., 2023, A taxonomic revision of the genus Eperua (Leguminosae, Detarioideae, Detarieae), pp. 1-127 in Phytotaxa 617 (1) on page 74, DOI: 10.11646/phytotaxa.617.1.1, http://zenodo.org/record/838976