Uma sinopse de Lacunaria Ducke

Rocha, Antônio Elielson Sousa da; Secco, Ricardo de S.

doi:10.1590/s0044-59672004000300008

Cited by 3 publications

(2 citation statements)

References 3 publications

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“…They are capsules opening from the base in Medusagynaceae (Doweld, ) and, among Sauvagesioideae, in Godoya (Planchon, , two plates; Dwyer, ; Amaral, ), Rhytidanthera , Krukoviella , Cespedesia , Philacra and Schuurmansia (Sauvagesioideae) (Amaral, ); but opening from the apex in Testulea , Luxemburgia , Blastemanthus , Poecilandra , Schuurmansiella , Tyleria , Adenarake , Indosinia and Sauvagesia (Sauvagesioideae) (Amaral, ); the two carpels fall apart in Wallacea , and the capsule type is not specified in Fleurydora (Amaral, ). Fruits have longitudinal ribs in Quiinaceae ( Quiina ; Schneider, ; Lacunaria ; Mori, ; Rocha & Secco, ; Schneider & Zizka, ; Touroulia ; Mori, ) and Ochnoideae ( Lophira ; Gilg, ), and, in addition, the ribs are subdivided into small protuberances in Medusagynaceae (Dickison, , b; Doweld, ). The seeds are flat and winged in Medusagynaceae (Doweld, ) and most Sauvagesioideae.…”

Section: Discussionmentioning

confidence: 99%

Comparative floral structure and systematics in Ochnaceaes.l.(Ochnaceae, Quiinaceae and Medusagynaceae; Malpighiales)

2012

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Ochnaceae s.l. (Ochnaceae, Quiinaceae and Medusagynaceae), one of the well-supported subclades of the large order Malpighiales retrieved so far in molecular phylogenetic studies, were comparatively studied with regard to floral structure using microtome section series and scanning electron microscopy (SEM). Floral morphology, anatomy and histology also strongly reflect this close relationship. Potential synapomorphies of the subclade include: flowers nectarless, sepals of different sizes within a flower, petals not retarded in development and forming the protective organs of advanced floral buds, petal aestivation contort, petals with three vascular traces, petals reflexed over the sepals and directed toward the pedicel, polystemony, anthers almost or completely basifixed, gynoecium often with more than five carpels, short gynophore present, styles separate for at least their uppermost part and radiating outwards, suction-cup-shaped stigmas, vasculature forming a dorsal band of bundles in the upper stylar region, gynoecium epidermis with large, radially elongate cells, ovules either weakly crassinucellar or incompletely tenuinucellar with an endothelium, abundance of tanniferous tissues and sclerenchyma in floral organs. The most strongly supported subclade of two of the three families in molecular analyses, Quiinaceae and Medusagynaceae, is also particularly well supported by floral structural features, including the presence of functionally and morphologically unisexual flowers, a massive thecal septum that persists after anther dehiscence, styles radiating outward from the ovary, two lateral ovules per carpel, positioned one above the other, conspicuous longitudinal ribs on the ovary wall at anthesis, and a 'false endothelium' on the nucellus at anthesis. Additionally, the group fits well in Malpighiales and further emphasizes the relationship of Malpighiales with Celastrales and Oxalidales, and thus the unity of the COM clade.

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Section: Discussionmentioning

confidence: 99%

Comparative floral structure and systematics in Ochnaceaes.l.(Ochnaceae, Quiinaceae and Medusagynaceae; Malpighiales)

2012

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“…e Touroulia Aubl.) ocorrem no Brasil, com aproximadamente 30 espécies registradas (Barroso et al 1978;Rocha & Secco 2004;Souza & Lorenzi 2008). Apesar da maior diversidade taxonômica nas florestas ao norte do país, foram encontradas amostras da floresta atlântica em acervos locais.…”

Section: Introductionunclassified

Quiinaceae do Nordeste

2010

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ResumoQuiinaceae está representada no Nordeste do Brasil por quatro espécies e dois gêneros: Lacunaria crenata, Quiina cruegeriana, Q. florida e Q. glazovii. Na Região, ocorrem exclusivamente em floresta atlântica, com preferência por ambientes mais úmidos e preservados. São registrados casos de endemismos na floresta atlântica (Q. glazovii) e disjunção entre as florestas amazônica e atlântica ao norte do rio São Francisco (Q. cruegeriana e Q. florida). São apresentados comentários sobre distribuição geográfica, habitats, caracteres diagnósticos e ilustrações, além de um novo sinônimo. Palavras-chave: Brasil, florística, floresta atlântica, Quiina, Lacunaria. AbstractQuiinaceae is represented in Northeast Brazil by four species and two genera: Lacunaria crenata, Quiina cruegeriana, Q. florida, and Q. glazovii. They occur in the Atlantic forest, clearly preferring wet, preserved habitats. A new synonym is presented as well as comments on geographic distribution, habitats, and diagnostic characters.

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Taxonomic Revision of the Neotropical Genus <I>Lacunaria</I> (Quiinaceae / Ochnaceae s. l.)

Schneider¹,

Zizka²

2012

issn: 0363-6445

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Uma sinopse de Lacunaria Ducke

Cited by 3 publications

References 3 publications

Comparative floral structure and systematics in Ochnaceaes.l.(Ochnaceae, Quiinaceae and Medusagynaceae; Malpighiales)

Comparative floral structure and systematics in Ochnaceaes.l.(Ochnaceae, Quiinaceae and Medusagynaceae; Malpighiales)

Quiinaceae do Nordeste

Taxonomic Revision of the Neotropical Genus <I>Lacunaria</I> (Quiinaceae / Ochnaceae s. l.)

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