Estudos taxonômicos em Gloxinia s.l. (Gesneriaceae) - I: uma nova espécie do Mato Grosso do Sul, Brasil

Araújo, Andréa Onofre de; Souza, Vinícius Castro; Chautems, Alain

doi:10.1590/2175-7860201061135

Cited by 3 publications

(5 citation statements)

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“…Roalson & Boggan; Araujo et al . ), only G. perennis and G. alterniflora present campanulate flowers, an osmophore and lack of any nectary; whereas G . erinoides and G .…”

Section: Discussionmentioning

confidence: 93%

Pollination ecology of the Neotropical gesneriad Gloxinia perennis: chemical composition and temporal fluctuation of floral perfume

et al. 2019

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Although common among orchids, pollination by perfume-gathering male euglossine bees is quite rare in other Neotropical families. In Gesneriaceae, for example, it is reported in two genera only, Drymonia and Gloxinia. Flowers of G. perennis are known to emit perfume, thereby attracting male euglossine bees as pollinators. However, detailed reports on the pollination ecology, as well as on chemistry of floral perfume of individuals in natural populations, are still missing. In this study, we report on the pollination ecology of G. perennis, focusing on the ecological significance of its floral perfume.• In natural populations in Peru, we documented the floral biology and breeding system of G. perennis, as well as its interaction with flower visitors. We also characterised the chemical composition of floral perfume, as well as its timing of emission.• Gloxinia perennis is self-compatible and natural pollination success is high. Spontaneous self-pollination occurs as a 'just in case strategy' when pollinators are scarce. Perfume-collecting males of Eulaema cingulata and El. meriana were identified as pollinators. The perfume bouquet of G. perennis consists of 16 compounds. (E)-Carvone epoxide (41%) and limonene (23%) are the major constituents. Perfume emission is higher at 09:00 h, matching the activity peak of Eulaema pollinators.• Flowers of G. perennis have evolved a mixed strategy to ensure pollination (i.e. selfand cross-pollination), but cross-pollination is favoured. The size and behaviour of Eulaema males enables only these bees to successfully cross-pollinate G. perennis. Furthermore, G. perennis floral perfume traits (i.e. chemistry and timing of emission) have evolved to optimise the attraction of these bees.Plant Biology 21 (2019) 723-731

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“…Roalson & Boggan; Araujo et al . ), only G. perennis and G. alterniflora present campanulate flowers, an osmophore and lack of any nectary; whereas G . erinoides and G .…”

Section: Discussionmentioning

confidence: 93%

Pollination ecology of the Neotropical gesneriad Gloxinia perennis: chemical composition and temporal fluctuation of floral perfume

et al. 2019

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“…Araujo & Chautems (Araujo et al 2010a,b), the present study produced the first palynological data. Araujo (2007), Perret et al (2013 and Roalson et al (2005a) established that Mandirola and Goyazia were closely related genera, based on morphological and molecular data. According to Araujo (2007) and Araujo et al (2010b), Mandirola is polyphyletic by the circumscription of Roalson et al (2005a), and the species recognized in Goyazia should be included in Mandirola.…”

Section: Discussionmentioning

confidence: 99%

“…Araujo (2007), Perret et al (2013 and Roalson et al (2005a) established that Mandirola and Goyazia were closely related genera, based on morphological and molecular data. According to Araujo (2007) and Araujo et al (2010b), Mandirola is polyphyletic by the circumscription of Roalson et al (2005a), and the species recognized in Goyazia should be included in Mandirola. Howard (1975) observed prolate spheroidal to prolate pollen grains, tricolpate, long colpi with granulate membrane, and reticulate exine in Goyazia villosa (Gardner) R.A. Howard.…”

Section: Discussionmentioning

confidence: 99%

“…In Brazil, Gloxiniinae is represented by 15 species, distributed in eight genera, three of them are endemic to the country. These species are mostly found on rocky outcrops, rocky fields or gallery forests in the Cerrado biome, growing as perennial herbs or subshrubs, with scaly rhizomes, leaves opposite and thin, flowers mostly purple, sometimes white or red, and dry or fleshy capsule (Araujo 2007;Weber 2004;Weber et al 2013).…”

Section: Introductionmentioning

confidence: 99%

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Pollen morphology in Brazilian species of Gloxiniinae (Gesneriaceae): variation in apertures and pattern of ornamentation

et al. 2018

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Gloxiniinae comprises herbs and subshrubs usually growing on rocky outcrops, rocky fields or gallery forests. For Gesneriaceae in some cases variations in pollen morphology allow the differentiation of genera and species. We studied the pollen grains of ten Brazilian species of Gloxiniinae (Gesneriaceae), including the genera Chautemsia, Gloxinia, Goyazia, Mandirola and Seemannia with the purposes of describing the pollen morphology of these genera, and contributing to the taxonomic characterization of the group and a better delimitation of genera and species of Gesneriaceae. The pollen grains were acetolyzed, measured, photographed and described qualitatively. Quantitative data were analyzed through descriptive and multivariate statistics. Non-acetolyzed pollen grains were observed in SEM and TEM in order to provide more details of the ornamentation and the structure of the exine. The analyzed species differ as to the pollen amb, shape, length, width and ends of colpi, presence or absence of margo, type of endoaperture and exine ornamentation. We found circular, subcircular and subtriangular amb, oblate spheroidal and subprolate shape, long or very long colpi, narrow, wide or very wide, with or without margo, lalongate or lolongate endoaperture in microreticulate or reticulate pollen grains. The reticulate ornamentation appears in the Gloxinia species' pollen grains, and lolongate endoapertures represent the pattern for the subtribe pollen grains except in Chautemsia. The pollen grain metrics examined by principal component analysis allow generic distinction. We conclude that qualitative and quantitative pollen data help to delimit the genera and species of Gloxiniinae.

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“…foi um gênero drasticamente reformulado, passando de 15 espécies (Wiehler 1976(Wiehler , 1983) para apenas quatro: G. perennis (L.) Fritsch, G. erinoides (DC.) Roalson & Boggan, G. xanthophylla (Poeppig) Roalson & Boggan -as duas últimas eram antes incluídas nos gêneros monotípicos Koellikeria Regel e Anodiscus Benth., respectivamente -e G. alterniflora A.O.Araujo & Chautems, descrita recentemente (Araujo et al 2010b). Com exceção de G. perennis (espécie-tipo), as demais espécies foram acomodadas por Roalson et al (2005b) Roalson & Boggan], o qual foi incluído em uma nova tribo monogenerica (Sphaerorrhizeae); além disso, Gloxinia villosa (Gardner) Wiehler foi tratada como incertae sedis.…”

Section: Introductionunclassified

Estudos taxonômicos em Gloxinieae (Gesneriaceae) - notas nomenclaturais

Araújo

Souza

Chautems³

2012

Acta Bot. Bras.

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RESUMO(Estudos taxonômicos em Gloxinieae (Gesneriaceae) -notas nomenclaturais). Gloxinia L´Hér. foi um dos gêneros cuja delimitação foi mais modificada em decorrência da reorganização da tribo Gloxinieae nas últimas décadas. Como parte dos estudos taxonômicos no gênero, são designados 15 lectótipos, indicados seis nomes ilegítimos supérfluos, e proposta uma nova combinação neste trabalho; são incluídos, também, comentários sobre três espécies com identidade incerta. Palavras-chave: nomenclatura, Gloxinella, Goyazia, Mandirola, Seemannia ABSTRACT(Taxonomic studies on Gloxinieae (Gesneriaceae) -nomenclatural notes). Gloxinia L'Her. is a genus that has undergone major changes since the reorganization of the tribe Gloxinieae in the last few decades. We here designate 15 lectotypes, indicate six illegitimate superfluous names, and propose one new combination for this group; comments about three species with uncertain identities are also included.

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Estudos taxonômicos em Gloxinia s.l. (Gesneriaceae) - I: uma nova espécie do Mato Grosso do Sul, Brasil

Cited by 3 publications

References 1 publication

Pollination ecology of the Neotropical gesneriad Gloxinia perennis: chemical composition and temporal fluctuation of floral perfume

Pollination ecology of the Neotropical gesneriad Gloxinia perennis: chemical composition and temporal fluctuation of floral perfume

Pollen morphology in Brazilian species of Gloxiniinae (Gesneriaceae): variation in apertures and pattern of ornamentation

Estudos taxonômicos em Gloxinieae (Gesneriaceae) - notas nomenclaturais

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