Nova Biologica Reperta

Leaf and peduncle anatomy of some species of the genus Pterocephalus (Caprifoliaceae) from Iran

Authors

sepideh piroozi 1
Farideh Attar 1
mohsen Falahati–Anbaran 2
Kazem Mehdigholi 1

1 Central Herbarium of Tehran University, Department of Plant Sciences, School of Biology, College of Science, University of Tehran, Tehran, Iran

2 Department of Plant Sciences, School of Biology, College of Science, University of Tehran, Tehran, Iran

https://doi.org/10.29252/nbr.7.1.106
Abstract
Pterocephalus (Caprifoliaceae) consists of 30 species worldwide, mainly distributed in the temperate regions of the northern hemisphere, of which 14 species were reported from Iran, including five endemic ones. In this study, 35 leaf-related traits and 30 peduncle-related traits were investigated by light microscopy of 15 samples from 11 Iranian species of Ptreocephalus. Our results showed that there were two types of midrib, six types of leaf indumentum and five types of peduncle indumentum. Crystalized calcium oxalate was observed in the leaves and peduncles of most species except in P. plumosus and P. brevis. The profiles of the peduncles were hexagonal, circular or elliptical. The vascular cylinder shape varied from circular to sinuate form. P. wendelboi, with a very different morphology as compared with other species, also exhibited different anatomical characters. The hexagonal sections of peduncle in P. ghahremanii and P. kurdicus and two samples of P. szovitsii were found to be very similar. However, the mentioned characters were found to be less informative or charachterisation of other species. In conclusion, the results showed that the anatomical characters of the leaves and peduncles might have some taxonomic importance in the identification of some species of the genus Pterocephalus.




Keywords

crystalized calcium oxalate
Dipsacaceae
indumentum
micromorphology
Taxonomy
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Nova Biologica Reperta
Volume 7, Issue 1 - Serial Number 23
Spring 2020
Pages 106-118

  • Receive Date 08 June 2026
  • Publish Date 08 June 2026

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