Flora Da Reserva Ducke, Amazonas, Brasil: Burmanniaceae

Maas, Hiltje; Maas, P.J.M.

doi:10.1590/2175-78602005568625

Cited by 6 publications

(15 citation statements)

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“…Hatusima (1976: 4 Mueller (1891: 232) and is now considered a synonym of Thismia caudata Maas & Maas (1986: 162). The latter species possesses connate anther thecae, a character of subgenus Ophiomeris, and has hence been transferred to subgenus Ophiomeris as the type of section Pyramidalis (Maas & Maas 1986 Tsukaya & H.Okada, Syst. Bot.…”

Section: Taxonomic Treatmentmentioning

confidence: 99%

Thismia nigricoronata, a new species of Burmanniaceae (Thismieae, Dioscoreales) from Vang Vieng, Vientiane Province, Laos, and a key to subgeneric classification

Kumar¹,

Gale²,

Li³

et al. 2017

Phytotaxa

593

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Thismia nigricoronata is described as a new species in family Burmanniaceae. Both morphological and phylogenetic analyses indicate that this new Lao endemic is allied to T. taiwanensis in section Glaziocharis, and it can be differentiated on the basis of its longer vestigial stem leaves, reflexed free outer perianth lobes and ornamented, vibrantly coloured outer surface of the perianth tube. The infrageneric taxonomy of Thismia is reviewed, the genera Geomitra and Scaphiophora are officially reduced to sectional status in Thismia, and all species are enumerated in systematic order. A key to all currently accepted subgenera, sections and subsections is presented to facilitate further examination of their phylogenetic integrity in light of apparent conflict between the traditional morphology-based system and the emerging DNA-based classification.

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Section: Taxonomic Treatmentmentioning

confidence: 99%

Thismia nigricoronata, a new species of Burmanniaceae (Thismieae, Dioscoreales) from Vang Vieng, Vientiane Province, Laos, and a key to subgeneric classification

Kumar¹,

Gale²,

Li³

et al. 2017

Phytotaxa

593

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“…Specialized literature was used to confirm identity of the species and determine its geographic distribution (Jonker 1938;Maas et al 1986b;Maas-van de Kamer and Maas 1988, 2003, 2005. Additional data were obtained from speciesLink (http://splink.cria.org.br/), Tropicos (http://www.tropicos.org/), Catalogue of Life (http:// www.catalogueoflife.org/), and Flora do Brasil 2020 (http://floradobrasil.jbrj.gov.br/) databases.…”

Section: Methodsmentioning

confidence: 99%

“…2). Central America (Costa Rica, Honduras, Jamaica, and Panama), Amazonian regions of Bolivia, Colombia, Venezuela, and Brazil, and in the Brazilian states Rio de Janeiro (Maas et al 1986b;Maas-van de Kamer andMaas 1988, 2005;Maas et al 2015;Kew 2018;Tropicos 2018) and now Paraná. From sea level to 1400 m a.s.l.…”

Section: Gymnosiphonmentioning

confidence: 99%

“…Gymnosiphon Blume is a species-rich Pantropical genus of Burmanniaceae (Merckx et al 2008), characterized by outer petals 3-lobed, caducous, fruits in line with the pedicel, dehiscent through three valves or with the capsule wall irregularly withering (Maas et al 1986b). The genus comprises 24 species, of which 14 are found in the Neotropics (Maas-van de Kamer 1998).…”

Section: Introductionmentioning

confidence: 99%

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First record of Gymnosiphon tenellus (Benth.) Urb. (Burmanniaceae) in Paraná state and southern Brazil

Souza¹,

Blum²,

Brotto³

2019

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“…Many species of mycoheterotrophic plants have remarkably widespread distributions, yet at a local scale their distribution is often highly scattered (Cheek & Williams, 1999;Bergman et al, 2006;Merckx et al, 2013;Yamato et al, 2016). The patchy occurrence of these plants suggests that, besides the need to fulfil general global scale requirements, such as appropriate soil water content (Maas et al, 1986;Cheek & Williams, 1999) or shade conditions (Leake, 1994;Cheek & Williams, 1999;Bidartondo et al, 2004) within particular forest types (Gomes et al, 2019), the presence of mycoheterotrophic plants is constrained by particular local-scale factors. Due to the reliance of mycoheterotrophic plants on mycorrhizal networks, both biotic (interactions with their fungi) and abiotic (soil conditions) factors can potentially contribute to their occurrence at a local scale.…”

Section: Introductionmentioning

confidence: 99%

Environmental drivers for cheaters of arbuscular mycorrhizal symbiosis in tropical rainforests

et al. 2019

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Summary Hundreds of nonphotosynthetic mycoheterotrophic plant species cheat the arbuscular mycorrhizal symbiosis. Their patchy local occurrence suggests constraints by biotic and abiotic factors, among which the role of soil chemistry and nutrient status has not been investigated. Here, we examine the edaphic drivers predicting the local‐scale distribution of mycoheterotrophic plants in two lowland rainforests in South America. We compared soil chemistry and nutrient status in plots where mycoheterotrophic plants were present with those without these plants. Soil pH, soil nitrate, and the interaction between soil potassium and nitrate concentrations were the best predictors for the occurrence of mycoheterotrophic plants in these tropical rainforests. Mycoheterotrophic plant occurrences decreased with a rise in each of these predictors. This indicates that these plants are associated with low‐fertility patches. Such low‐fertility conditions coincide with conditions that potentially favour a weak mutualism between plants and arbuscular mycorrhizal fungi according to the trade balance model. Our study points out which soil properties favour the cheating of arbuscular mycorrhizal networks in tropical forests. The patchy occurrence of mycoheterotrophic plants suggests that local soil heterogeneity causes the stability of arbuscular mycorrhizal networks to vary at a very small scale.

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Flora Da Reserva Ducke, Amazonas, Brasil: Burmanniaceae

Cited by 6 publications

References 0 publications

Thismia nigricoronata, a new species of Burmanniaceae (Thismieae, Dioscoreales) from Vang Vieng, Vientiane Province, Laos, and a key to subgeneric classification

Thismia nigricoronata, a new species of Burmanniaceae (Thismieae, Dioscoreales) from Vang Vieng, Vientiane Province, Laos, and a key to subgeneric classification

First record of Gymnosiphon tenellus (Benth.) Urb. (Burmanniaceae) in Paraná state and southern Brazil

Environmental drivers for cheaters of arbuscular mycorrhizal symbiosis in tropical rainforests

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Flora Da Reserva Ducke, Amazonas, Brasil: Burmanniaceae

Cited by 6 publications

References 0 publications

Thismia nigricoronata, a new species of Burmanniaceae (Thismieae, Dioscoreales) from Vang Vieng, Vientiane Province, Laos, and a key to subgeneric classification

Thismia nigricoronata, a new species of Burmanniaceae (Thismieae, Dioscoreales) from Vang Vieng, Vientiane Province, Laos, and a key to subgeneric classification

First record of Gymnosiphon tenellus (Benth.) Urb. (Burmanniaceae) in Paran&aacute; state and southern Brazil

Environmental drivers for cheaters of arbuscular mycorrhizal symbiosis in tropical rainforests

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Resources

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First record of Gymnosiphon tenellus (Benth.) Urb. (Burmanniaceae) in Paraná state and southern Brazil