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1 April 2010 Stem anatomy and pattern of secondary growth in some herbaceous vine species of Menispermaceae
Neusa Tamaio, Ana Joffily, João Marcelo Alvarenga Braga, Kishore S. Rajput
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Abstract

The stem anatomy and pattern of secondary growth in Ungulipetalum filipendulum (Mart.) Moldenke, Cissampelos andromorpha DC., Disciphania hernandia (Vell.) Barneby, Odontocarya vitis (Vell.) J.M.A. Braga, and O. tamoides (DC.) Miers are described for the first time. Their morphology shares features of wood anatomy in common with other Menispermaceae, highlighted by wide rays, pitted tyloses and enlarged vessel pits near the perforation plates. However, unlike other members of Menispermaceae with successive cambia, a single vascular cambium remained functional and showed normal secondary growth. Other characteristics distinguish them from species having stems with successive cambia, such as parenchyma proliferation, new axial segments and type of parenchyma. In fact, it is thought that this pattern of secondary growth indicates that the stem will not develop successive cambia. Since the absence or presence of successive cambia has phylogenetic importance, a methodology which focuses on the patterns of secondary growth may improve the morphological accuracy of stem classification in this family.

Neusa Tamaio, Ana Joffily, João Marcelo Alvarenga Braga, and Kishore S. Rajput "Stem anatomy and pattern of secondary growth in some herbaceous vine species of Menispermaceae," The Journal of the Torrey Botanical Society 137(2), 157-165, (1 April 2010). https://doi.org/10.3159/09-RA-059R.1
Received: 5 November 2009; Published: 1 April 2010
JOURNAL ARTICLE
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KEYWORDS
Cissampelos
Disciphania
habit
liana
Menispermaceae
Odontocarya
Ungulipetalum
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