O gênero Chamaecrista (Leguminosae: Caesalpinioideae) no Parque Estadual do Rio Preto, São Gonçalo do Rio Preto, Minas Gerais, Brasil

ZEFERINO, LAÍS COUTO; Queiroz, Rubens Teixeira de; Rando, Juliana Gastaldello; Cota, Matheus Martins Teixeira; Fantini, Isabella Fernandes; Caetano, Ana Paula de Souza; Perez, Ana Paula Fortuna

doi:10.1590/2175-7860201970030

Cited by 4 publications

(4 citation statements)

References 9 publications

(6 reference statements)

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“…Brazil is a center of diversity for this group and includes species commonly found in the Cerrado (Brazilian savanna; Souza and Bortoluzzi, 2012). Chamaecrista ramosa is an under‐shrub species that is widespread in the Neotropical region, from southern Mexico through Central and South America (Zeferino et al, 2019; Cota et al, 2020).…”

Section: Methodsmentioning

confidence: 99%

Minimum size threshold of visiting bees of a buzz‐pollinated plant species: consequences for pollination efficiency

Neto

Vieira

Schlindwein

2021

American J of Botany

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PREMISE Flowering plants with poricidal anthers are commonly visited by buzzing bees, which vibrate flowers to extract pollen. However, not all flower visitors are in fact pollinators, and features such as body size and duration of flower visits are important factors in determining pollination effectiveness. We tested whether bee‐to‐flower size relationships predict the pollination effectiveness of flower visitors of a buzz‐pollinated species (Chamaecrista ramosa, Fabaceae). METHODS We sorted 13 bee taxa into three groups: smaller than, equivalent to (“fit‐size”), and larger than flower herkogamy (spatial separation between anthers and stigma). We expected the latter two groups to touch the stigmas, which would be an indicator of pollination effectiveness, more frequently than the first group. To test this hypothesis, we assessed contact with stigmas, foraging behavior, and duration of visits for the three size groups of bees. RESULTS Our data reveal that small bees scarcely touched the stigmas, while large and fit‐size bees were the most efficient pollinators, achieving high stigma‐touching rates, conducting much shorter flower visits, and visiting flowers and conspecific plants at high rates during foraging bouts. CONCLUSIONS The results did not show size‐matching among bees and flowers, as expected, but rather a minimum size threshold of efficient pollinators. The finding of such a threshold is a nonarbitrary approach to predicting pollination effectiveness of visitors to herkogamous flowers with poricidal anthers.

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Section: Methodsmentioning

confidence: 99%

Minimum size threshold of visiting bees of a buzz‐pollinated plant species: consequences for pollination efficiency

Neto

Vieira

Schlindwein

2021

American J of Botany

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“…Although several species are widespread, such as C. rotundifolia (Pers.) Greene, C. mimosoides (L.) Greene and C. flexuosa (L.) Greene, a high diversity is concentrated in Brazilian savannas and in the “campos rupestres’’ vegetation ( Irwin and Barneby 1978 , 1982 ; Rando et al 2020b ). In these centers of diversity, several species have evolved underground systems that allow survival after fire and during long dry periods ( Rando et al 2016 ).…”

Section: 5 Tribe Cassieaementioning

confidence: 99%

“… Bentham (1871) ; Buril et al (2011) ; Cota et al (2020) ; Irwin (1964) ; Irwin and Barneby (1976a , 1976b , 1977 , 1978 , 1981 , 1982 ); Irwin and Rogers (1967) ; Rando et al (2016 , 2020b ); Souza et al (2021) .…”

Section: 5 Tribe Cassieaementioning

confidence: 99%

Advances in Legume Systematics 14. Classification of Caesalpinioideae. Part 2: Higher-level classification

Bruneau,

de Queiroz,

Ringelberg

et al. 2024

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Caesalpinioideae is the second largest subfamily of legumes (Leguminosae) with ca. 4680 species and 163 genera. It is an ecologically and economically important group formed of mostly woody perennials that range from large canopy emergent trees to functionally herbaceous geoxyles, lianas and shrubs, and which has a global distribution, occurring on every continent except Antarctica. Following the recent re-circumscription of 15 Caesalpinioideae genera as presented in Advances in Legume Systematics 14, Part 1, and using as a basis a phylogenomic analysis of 997 nuclear gene sequences for 420 species and all but five of the genera currently recognised in the subfamily, we present a new higher-level classification for the subfamily. The new classification of Caesalpinioideae comprises eleven tribes, all of which are either new, reinstated or re-circumscribed at this rank: Caesalpinieae Rchb. (27 genera / ca. 223 species), Campsiandreae LPWG (2 / 5–22), Cassieae Bronn (7 / 695), Ceratonieae Rchb. (4 / 6), Dimorphandreae Benth. (4 / 35), Erythrophleeae LPWG (2 /13), Gleditsieae Nakai (3 / 20), Mimoseae Bronn (100 / ca. 3510), Pterogyneae LPWG (1 / 1), Schizolobieae Nakai (8 / 42–43), Sclerolobieae Benth. & Hook. f. (5 / ca. 113). Although many of these lineages have been recognised and named in the past, either as tribes or informal generic groups, their circumscriptions have varied widely and changed over the past decades, such that all the tribes described here differ in generic membership from those previously recognised. Importantly, the approximately 3500 species and 100 genera of the former subfamily Mimosoideae are now placed in the reinstated, but newly circumscribed, tribe Mimoseae. Because of the large size and ecological importance of the tribe, we also provide a clade-based classification system for Mimoseae that includes 17 named lower-level clades. Fourteen of the 100 Mimoseae genera remain unplaced in these lower-level clades: eight are resolved in two grades and six are phylogenetically isolated monogeneric lineages. In addition to the new classification, we provide a key to genera, morphological descriptions and notes for all 163 genera, all tribes, and all named clades. The diversity of growth forms, foliage, flowers and fruits are illustrated for all genera, and for each genus we also provide a distribution map, based on quality-controlled herbarium specimen localities. A glossary for specialised terms used in legume morphology is provided. This new phylogenetically based classification of Caesalpinioideae provides a solid system for communication and a framework for downstream analyses of biogeography, trait evolution and diversification, as well as for taxonomic revision of still understudied genera.

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“…Other families, including Apocynaceae, Melastomataceae, Rubiaceae, Orchidaceae, Poaceae, Eriocaulaceae, Xyridaceae, and Myrtaceae, also have a high sampling effort in the Espinhaço Range (Figure 3A). The most species-rich genera in the checklist are presented in Figure 3B and may have appeared due to four conditions: 1) Floristic studies exclusive for Paepalanthus (Hensold 1998;Andrino & Costa 2013;Andrino et al 2015), Chamaecrista (Zeferino et al 2019;Cota et al 2020), and Paspalum (Pimenta et al 2019); 2) Monogeneric families studies (Xyridaceae, Xyris) (Wanderley & Silva 2009;Wanderley 2011;Silva & Wanderley 2013); 3) Presence in the family of the richest genera know to Espinhaço Range, Microlicia (Melastomataceae) (Pataro et al 2017;Pacifico & Fidanza 2018); and 4) Several studies on specific genera, such as Mikania, which appear in of the 11 Asteraceae's Floras (Hind 2003;Moura & Roque 2014;Roque et al 2016;Contro & Nakajima 2017;Staudt et al 2017;Staudt & Roque 2020). These genera are rich in species endemic to the Espinhaço Range (Colli-Silva et al 2019a).…”

Section: Checklistmentioning

confidence: 99%

What is being published on floristics? an overview of floristic studies carried out in the Espinhaço Range

2023

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The campo rupestre in the Espinhaço Range is subject of many floristic studies due to its high rates of species diversity and endemism. These studies are made up of critical, easily accessible data about local richness and biodiversity, which are essential for subsidizing new studies in the fields of conservation, ecology, and systematics. This study describes the results of a survey of floristic studies carried out in the Espinhaço Range and provides a checklist of the plant species listed in them. We found that 294 floristic studies were conducted in the Espinhaço Range, but they were focused only on a few areas. Likewise, we detected sampling gaps in some areas. The Floras studied provide information on 3,191 plants or 6,3% Brazilian flora, of which 2,879 are angiosperms, 247 bryophytes, and 65 lycophytes and ferns. Finally, we observed a lack of standardization regarding the habits reported for angiosperms shrubs and subshrubs which is more problematic for Espinhaço's flora because of its grasslands or shrublands vegetation. Thereby, we reaffirm the importance and need to encourage new floristic studies in the Espinhaço Range as a means to train new taxonomists and to provide new studies and projects.

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O gênero Chamaecrista (Leguminosae: Caesalpinioideae) no Parque Estadual do Rio Preto, São Gonçalo do Rio Preto, Minas Gerais, Brasil

Cited by 4 publications

References 9 publications

Minimum size threshold of visiting bees of a buzz‐pollinated plant species: consequences for pollination efficiency

Minimum size threshold of visiting bees of a buzz‐pollinated plant species: consequences for pollination efficiency

Advances in Legume Systematics 14. Classification of Caesalpinioideae. Part 2: Higher-level classification

What is being published on floristics? an overview of floristic studies carried out in the Espinhaço Range

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