Thismia panamensis: first record of Thismiaceae for the Brazilian Cerrado in Goiás state

Guilherme, Frederico Augusto Guimarães; Coelho, Christiano Peres; Smidt, Eric de Camargo; Gomes, Daielle Carrijo; Souza, Luzia Francisca de

doi:10.15560/12.2.1877

Cited by 4 publications

(10 citation statements)

References 8 publications

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“…In Brazil, there are approximately 13 species of Thismia , seven of which are endemic (Flora do Brasil, 2020), distributed in the Amazon, with six species recorded (Voloschen et al 2013; Silva et al 2020), and in the Atlantic Forest, with nine species recorded (Maas et al 1986; Mancinelli et al 2012; Souza & Lorenzi 2012). Recently, a first record of the Thismiaceae for the Cerrado was recorded: Thismia panamensis (Guilherme et al 2016), the focal species of this study.…”

Section: Introductionmentioning

confidence: 79%

“…Thismia panamensis flowering and fruiting occur in the rainy season. The species has an inferior ovary that, when developed, forms a dehiscent fruit, with exposed seeds (Guilherme et al 2016), similar to other species of Thismia (Brodie 1951; Mar & Saunders 2015). These characteristics of fruit and seed indicate that dispersal may occur by raindrop splash (Mar & Saunders 2015), although, to date, there are no records in the literature on this dispersal strategy for the genus.…”

Section: Introductionmentioning

confidence: 97%

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Ombrohydrochory in Thismia panamensis (Standley) Jonk: a mycoheterotrophic species in Brazilian Cerrado forests

et al. 2021

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Species of the genus Thismia Griff. are small herbs, considered mycoheterotrophic due to an intimate relationship with fungi. They are achlorophyllous, with complex floral structure but little information on reproductive strategies. This study evaluated structural and ecological aspects associated with the dispersal of seeds of Thismia panamensis (Standley) Jonk. The study was carried out in a forest fragment in the Brazilian Cerrado. During the reproductive period, 36 individuals were monitored for spatial distribution of the population and their fruits were collected. Samples were subjected to light microscopy and microtomography techniques, in addition to an experiment to evaluate seed dispersal by water droplets. Thismia panamensis is up to 8‐cm tall, with a tuberous root and stem, without leaves. Its fruit is dehiscent, cup‐shaped, 5 ± 1 mm in diameter, containing 219.33 ± 106.70 seeds, with an average length of 0.55 ± 0.07 mm. The seeds are exposed, and their coat has a thin and lignified wall. Accumulation of secretions was observed inside the fruits. The innermost cell layer of the ovary showed typical characteristics of aquiferous parenchyma. Water splash experiments showed that the seeds reached an average distance of 44.04 ± 26.58 cm. Each splash contained, on average, 1.50 ± 1.23 seeds, with 75% of the splashes containing a single seed. A total of 239 seeds were counted in the 163 splashes evaluated. The data show potential seed dispersal by ombrohydrochory in T. panamensis, favouring its maintenance in the study area and reflecting its clumped spatial distribution.

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Section: Introductionmentioning

confidence: 79%

Section: Introductionmentioning

confidence: 97%

Ombrohydrochory in Thismia panamensis (Standley) Jonk: a mycoheterotrophic species in Brazilian Cerrado forests

et al. 2021

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“…In the Southeastern region, we have representatives from Burmanniaceae (Souza, Blum, & Brotto, 2019), Thismiaceae (Guilherme, Coelho, Smidt, Gomes, & Souza, 2016), Orchidaceae (Bittencourt & Gasper, 2016;Mancinelli & Quadros, 2016). In the South region we have studies with the family Triuridaceae (Valadares, Arçari, Martins, & Schneider, 2015).…”

Section: Lacandonia Brasiliana a Melo And Mmentioning

confidence: 99%

“…In addition to Triuridaceae, this order includes the families Cyclanthaceae, Pandanaceae and Velloziaceae (Maas & Rübsamen, 1986;Mercks et al, 2013;Nuraliev, Cheek & Beer, 2016;APG IV, 2016;Suetsugu et al, 2017) and is represented by nine genera with ca. 55 species (Christenhusz & Byng, 2016;Govaerts, Maas-van de Kamer, & Maas, 2016).…”

Section: Introducionmentioning

confidence: 99%

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Lacandonia brasiliana A. Melo & M. Alves (Triuridaceae), New Occurrence for the State of Ceará, Brazil

Pinheiro

Lucena

Sampaio

et al. 2020

Rev. Bras. Geog. Fis.

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The Triuridaceae family is composed of saprophytic plants, chlorophylls, usually unbranched stems, leaves in alternate scales, bisexual or unisex racemous inflorescence, follicle or achene fruits. The species Lacandonia brasiliana A. Melo & M. Alves was described as a new species at the beginning of this decade through its first occurrence in the state of Paraíba, Brazil and South America. The objective was to report the first occurrence of the species Lacandonia brasiliana to Ceará State, the second occurrence for Brazil and South America, contributing to the knowledge of its distribution. The species was collected through expeditions in Cerrado fragments, in the municipality of Viçosa do Ceará-CE, during May/2019, which had fertile structures for later taxonomic identification. The collected material was herborized and later deposited in the Herbarium Prisco Bezerra (EAC) of the Federal University of Ceará. Identification was based on identification keys, specialized bibliography, expert consultation, comparison with herbarium and standard specimens. The species is presented with description, taxonomic and ecological comments, distribution data and images. It is a small, non-branched, mycro-heterotrophous species found in a preserved area of Seasonal Semideciduous Forest, being the first record for a Cerrado phytophysiognomy area. It's concluded that the new occurrence of Lacadonia brasiliana for the State of Ceará highlights the importance of floristic surveys in Cerrado forest remnants, and it is possible to observe the expansion of its territorial distribution, degree of conservation and richness.

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Thismia panamensis (Standl.) Jonker (Thismiaceae): first record for southern Brazil

Souza

2021

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A new southernmost record of Thismia panamensis (Standl.) Jonker in Brazil extends the occurrence of this species to the Atlantic Rainforest. This species was found in Parque Estadual Serra da Baitaca, in Paraná state, where other new records of mycoheterotrophic plants have recently been made. The new record highlights the wide distribution of the species, as it occurs in different ecosystems along a significant latitudinal gradient.

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Thismia panamensis: first record of Thismiaceae for the Brazilian Cerrado in Goiás state

Cited by 4 publications

References 8 publications

Ombrohydrochory in Thismia panamensis (Standley) Jonk: a mycoheterotrophic species in Brazilian Cerrado forests

Ombrohydrochory in Thismia panamensis (Standley) Jonk: a mycoheterotrophic species in Brazilian Cerrado forests

Lacandonia brasiliana A. Melo & M. Alves (Triuridaceae), New Occurrence for the State of Ceará, Brazil

Thismia panamensis (Standl.) Jonker (Thismiaceae): first record for southern Brazil

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