Morphology of the seed coat of Oxalis spp. from Buenos Aires Province (Argentina)

Rosenfeldt, Sonia; Galati, Beatriz Gloria

doi:10.3906/bot-1311-12

Cited by 4 publications

(8 citation statements)

References 9 publications

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“…Group 3 (Figures 2A-2L According to the present study, species of Oxalis section Alpinae have pollen grains 3-colpate, prolate spheroidal to oblate spheroidal. These characteristics coincide with those described for other Oxalis species of Argentina (Rosenfeldt and Galati, 2005, 2007, 2008López and Rosenfeldt, 2015). The visible lumen content present in some of the pollen grains corresponds to the columellae, which may vary in height and may or may not have tectum, as was previously reported by Rosenfeldt and Galati (2007).…”

Section: Resultssupporting

confidence: 72%

“…species-specific structures as seen in Oxalis, Fagopyrum, Lilium, Silene, and Gnetum, among other species (Hesse, 1986), and they have been used to contribute to the taxonomy in Oxalis (Rosenfeldt and Galati, 2005, 2007, 2008López and Rosenfeldt, 2015).…”

mentioning

confidence: 99%

“…Knowledge of the pollen of extant species allows us to identify ancient pollen and to provide new material to use to date phylogenies and improve macroevolutionary studies. Pollen grain morphology was previously studied in Oxalis considering aspects such as morphology (Wan and Chen, 2001;Perveen and Qaiser, 2003;Rosenfeldt and Galati, 2007;López and Rosenfeldt, 2015), types of pollen grain (Ghosh and Verma, 1985), ontogeny (Herr, 1972;Guth and Weller, 1986;Rosenfeldt and Galati, 2005), formation of aberrant pollen (Erdtman, 1952;Cerceau, 1995;Rosenfeldt and Galati, 2012), and categories of grain aberrations and succesiform series (Dreyer and Van Wyk, 1998).…”

mentioning

confidence: 99%

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Oxalis section Alpinae (Oxalidaceae): orbicule diversity and pollen grain morphology

López¹,

Rosenfeldt²

2016

Turk J Bot

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Section Alpinae is included in subgenus Oxalis, originally published by Reiche in 1894. The species in this section can be described as follows: annuals or perennial herbs, cushion-like loose to very dense, 1-30 cm high. Roots long, deep, sometimes tubers. Acaulescent or subacaulescent, woody stems. Stipules welded, generally covering the stem, sometimes covering the branches. Leaves always trifoliolate, leaflets obcordate, cuneiform, apex retuse or emarginate, with variable incisions, unequal lobes, calli sometimes present, pubescent on one or both sides, hairs on the margin sometimes present. Flowers in few-to manyflowered cymes, umbeliform, cymes embedded into the cushions or exceeding the foliage. Corolla mostly yellow, in a few species purple. Capsule globose to cylindrical (López and Heibl, unpublished data).Orbicules, also known as Ubisch bodies (Bhandari, 1984) can be defined as corpuscles of variable size (0.14-20 µm) that show the same electron density, autofluorescence, resistance to electrolysis, and reaction to dyes compared to pollen exine (Rosenfeldt and Galati, 2008). Orbicules are species-specific structures as seen in Oxalis, Fagopyrum, Lilium, Silene, and Gnetum, among other species (Hesse, 1986), and they have been used to contribute to the taxonomy in

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Section: Resultssupporting

confidence: 72%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Oxalis section Alpinae (Oxalidaceae): orbicule diversity and pollen grain morphology

López¹,

Rosenfeldt²

2016

Turk J Bot

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“…Abertura: 3-(4)-colpada, (6) Rosenfeldt & Galati (2007) enquadraram os seus grãos de pólen no tipo III por apresentarem 3-colpos a (8-12)-pantocolpados, colpos com membrana com grânulos dispostos em fileiras na margem e em pequenos grupos na parte central do colpo. As autoras mencionaram também a presença de grãos de pólen anômalos, assim como no presente estudo.…”

Section: Oxalis Corniculata L Figuras 1-6unclassified

“…De acordo com Souza & Bianchini (2000) Segundo dados disponíveis na literatura, as Oxalidaceae apresentam grãos de pólen apolares a isopolares, oblato-esferoidais, prolatos, subprolatos a raramente esferoidais, mônades, pequenos a médios, âmbito subcircular, triangular, 2-3-4-colpados, 2-zonacolpados, 6-12-pantocolpados a espiroaperturados, 3-colporoidados; exina tectada a intectada, baculada, rugulada, espiculada, areolada reticulada a microrreticulada (Erdtman 1952, Huynh 1969, Roubik & Moreno 1991, Dreyer & Van Wyk 1998, Melhem et al 2003, Perveen & Qaiser 2003, Rosenfeldt & Galati 2007.…”

Section: Introductionunclassified

Flora Polínica da Reserva do Parque Estadual das Fontes do Ipiranga (São Paulo, SP, Brasil). Família: 119-Oxalidaceae

Corrêa

Fonseca

2015

Hoehnea

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Macro- and micromorphology reveal four entities in the highly variable Oxalis polymorpha Mart. ex Zucc. (Oxalidaceae)

Richetti

Lima

Fiaschi

et al. 2023

Botany

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Leaf morphoanatomy can provide useful information for the taxonomy of morphologically similar species or the recognition of infraspecific taxa. Here, we evaluated the taxonomic utility of leaf morphological and anatomical characters for the recognition of distinct morphologies currently placed under Oxalis polymorpha Mart. ex Zucc., a highly polymorphic species of Oxalis from the Brazilian Atlantic Forest. We analyzed leaves of 13 specimens gathered from five populations throughout the species' geographic distribution. Leaf samples were analyzed under light and scanning electron microscopy. We observed differences in the leaf blade venation patterns, in the indumentum of petioles and leaf blades, in the pulvinar vascular tissue configuration, and in the midrib tissue organization. The variation in these characters allowed us to recognize four different morphotypes among these samples. These morphotypes are geographically disjunct and differ among each other in additional morphological features, such as leaf arrangement along the stem, leaflet shape, inflorescence position, petal color, and fruit shape. Oxalis polymorpha is a good candidate for investigating if phylogenetic relationships support recognition of each of its morphotypes at the species level.

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Morphology of the seed coat of Oxalis spp. from Buenos Aires Province (Argentina)

Abstract: The seeds of the studied species were collected from natural populations growing in the field. Voucher specimens of the species, listed in an alphabetic order, were deposited in Darwinion Institute Herbarium (SI),

Cited by 4 publications

References 9 publications

Oxalis section Alpinae (Oxalidaceae): orbicule diversity and pollen grain morphology

Oxalis section Alpinae (Oxalidaceae): orbicule diversity and pollen grain morphology

Flora Polínica da Reserva do Parque Estadual das Fontes do Ipiranga (São Paulo, SP, Brasil). Família: 119-Oxalidaceae

Macro- and micromorphology reveal four entities in the highly variable Oxalis polymorpha Mart. ex Zucc. (Oxalidaceae)

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