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Woodiness within the Spermacoceae–Knoxieae alliance (Rubiaceae): retention of the basal woody condition in Rubiaceae or recent innovation? Naturalis
Lens, F.; Groeninkx, I.; Smets, E.; Dessein, S..
† Background and Aims The tribe Spermacoceae is essentially a herbaceous Rubiaceae lineage, except for some species that can be described as ‘woody’ herbs, small shrubs to treelets, or lianas. Its sister tribe Knoxieae contains a large number of herbaceous taxa, but the number of woody taxa is higher compared to Spermacoceae. The occurrence of herbaceous and woody species within the same group raises the question whether the woody taxa are derived from herbaceous taxa (i.e. secondary woodiness), or whether woodiness represents the ancestral state (i.e. primary woodiness). Microscopic observations of wood anatomy are combined with an independent molecular phylogeny to answer this question. † Methods Observations of wood anatomy of 21 woody Spermacoceae and...
Tipo: Article / Letter to the editor Palavras-chave: Knoxieae; LM; Primary woodiness; Rubiaceae; Rubioideae; Secondary woodiness; Spermacoceae; Wood anatomy; 42.56.
Ano: 2009 URL: http://www.repository.naturalis.nl/record/428974
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The multiple fuzzy origins of woodiness within Balsaminaceae using an integrated approach. Where do we draw the line? Naturalis
Lens, F.; Eeckhout, S.; Zwartjes, R.; Smets, E.; Janssens, S.B..
• Background and Aims: The family Balsaminaceae is essentially herbaceous, except for some woodier species that can be described as ‘woody’ herbs or small shrubs. The family is nested within the so-called balsaminoid clade of Ericales, including the exclusively woody families Tetrameristaceae and Marcgraviaceae, which is sister to the remaining families of the predominantly woody order. A molecular phylogeny of Balsaminaceaeis compared with wood anatomical observations to find out whether the woodier species are derived from herbaceous taxa (i.e. secondary woodiness), or whether woodiness in the family represents the ancestral state for the order (i.e. primary woodiness). • Methods: Wood anatomical observations of 68 Impatiens species and Hydrocera...
Tipo: Article / Letter to the editor Palavras-chave: Balsaminaceae; Herbaceousness; Hydrocera; Impatiens; Insular woodiness; Light microscopy; Secondary woodiness; Wood anatomy; 42.56.
Ano: 2012 URL: http://www.repository.naturalis.nl/record/429514
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The Wood Anatomy of Rubiaceae tribes Anthospermeae and Paederieae Naturalis
Koek-Noorman, J.; Puff, Ch..
Detailed wood anatomical descriptions are given for the genera Anthospermum, Nenax, Phyllis, Carpacoce, Coprosma, Neogaillonia, Crocyllis, Plocama and Spermadictyon, and miscellaneous wood anatomical data on the genera Normandia, Pomax, Opercularia, Leptodermis and Aitchisonia. The wood anatomical variation within the large genus Anthospermum is discussed. Secondary woodiness is likely to occur in a number of Anthospermum species; other species of the genus have “normal” wood structure or are herbaceous. Nenax and Carpacoce may also have secondary woodiness. The Anthospermeae and the Paederieae differ from each other primarily in the fibre type: Anthospermeae have fibre tracheids, Paederieae libriform fibres. Except for the genus Phyllis, wood anatomical...
Tipo: Article / Letter to the editor Palavras-chave: Rubiaceae; Anthospermeae; Paederieae.; —Wood anatomy; Secondary woodiness.
Ano: 1983 URL: http://www.repository.naturalis.nl/record/534839
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