V. Dörken

Publications150
h-index9
Citations256
Highly Influential Citations7
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Male Cone Evolution in Conifers : Not All That Simple
Despite the simple structure of male conifer cones, there is an enormous variability in cone properties observed upon more careful examination. The diversity ranges from simple cones to compound… Expand
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Morphology, anatomy and vasculature of leaves in Pinus (Pinaceae) and its evolutionary meaning
Abstract The morphology, anatomy and vasculature of Pinus leaves was studied. The results indicate that the Pinus leaf is always supplied with only one single vascular bundle, which is surrounded by… Expand
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Orientation and withdrawal of pollination drops in Cupressaceae s. l. (Coniferales)
Abstract Pollination in the Cupressaceae is studied ex situ , focused on orientation and withdrawal of pollination drops. Orientation of pollination drops is a constant feature in most taxa studied… Expand
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Morphology and morphogenesis of the seed cones of the Cupressaceae - part III: Callitroideae
Cone morphology of the subfamily Callitroideae (Austrocedrus, Pilgerodendron, Libocedrus, Papuacedrus, Fitzroya, Diselma, Widdringtonia, Callitris, Actinostrobus and Neocallitropsis) is given and… Expand
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Leaf dimorphism in Thuja plicata and Platycladus orientalis (thujoid Cupressaceae s. str., Coniferales): the changes in morphology and anatomy from juvenile needle leaves to mature scale leaves
  • V. Dörken
  • Biology
  • Plant Systematics and Evolution
  • 4 June 2013
Thuja plicata and Platycladus orientalis initially produce only bifacial needle leaves. When the first lateral shoots develop, the leaf morphology and anatomy changes dramatically. Subsequently, only… Expand
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Environmental Conditions and Species Identity Drive Metabolite Levels in Green Leaves and Leaf Litter of 14 Temperate Woody Species
Research Highlights: Leaf chemistry is a key driver of litter decomposition; however, studies directly comparing metabolites that are important for tree growth and defence across different woody… Expand
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Morpho-anatomical studies on the change in the foliage of two imbricate-leaved New Zealand podocarps: Dacrycarpus dacrydioides and Dacrydium cupressinum
Many extant gymnosperms have strongly reduced leaves. While this is usually treated as adaptation to drought, other habitat factors must also be involved. This subject and the related change from… Expand
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Morpho-anatomical and physiological differences between sun and shade leaves in Abies alba Mill. (Pinaceae, Coniferales): a combined approach.
Morphology, anatomy and physiology of sun and shade leaves of Abies alba were investigated and major differences were identified, such as sun leaves being larger, containing a hypodermis and palisade… Expand
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Morpho-anatomical studies on the leaf reduction in Casuarina: the ecology of xeromorphy
Key messageThe foliage characters found in Casuarina seedlings may represent the ancestral, scleromorphic ones found in the Casuarinaceae. In the adults studied, these are replaced by derived… Expand
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Studies on the foliage of Myricaria germanica (Tamaricaceae) and their evolutionary and ecological implications
Key messageAncestral halophytic traits such as salt glands and leaf deciduousness have facilitated the adaptation of Myricaria germanica to non-saline calcium-rich soils.AbstractMyricaria germanica… Expand
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