DESARROLLO DE LA VARIANTE CAMBIAL ENSERJANIA MERIDIONALIS(SAPINDACEAE, PAULLINIEAE)

The family Sapindaceae is one of the most important groups of neotropical climbers and it has several cambial variants, some of which are exclusive. In this contribution, we described the wood development ofSerjania meridionalis, the southernmost distributed species of the genus, studied by conventi...

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Bibliographic Details
Published inDarwiniana Vol. 2; no. 1; pp. 144 - 153
Main Authors Borniego, M. Lucía, Cabanillas, Pablo A.
Format Journal Article
LanguageEnglish
Published Instituto de Botánica Darwinion 01.01.2014
Subjects
Anatomy
Cambium
Claves
Cylinders
Embargoes
Forest ecology
Herpes zoster
Human ecology
Wood structure
Woody vines
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Summary:The family Sapindaceae is one of the most important groups of neotropical climbers and it has several cambial variants, some of which are exclusive. In this contribution, we described the wood development ofSerjania meridionalis, the southernmost distributed species of the genus, studied by conventional anatomical techniques and based on material from Martín García island (Buenos Aires, Argentina). The primary vascular system is eustelic. Secondary growth begins with a typical cambium; however, secondary thickening supernumerary meristems dedifferentiate later. These meristems produce new vascular cylinders (secondary xylem and phloem) in the periphery of the original vascular cylinder. The presence of corded vascular cylinders in older stems ofS. meridionalisis new for the species and raises the need to review the presence-absence of cambial variants dichotomy in many identification keys.
ISSN:0011-6793
1850-1699