Plant Systematics and Evolution

, Volume 276, Issue 1–2, pp 105–123 | Cite as

A palynological study of the genus Nepeta L. (Lamiaceae)

  • Sevcan CelenkEmail author
  • Tuncay Dirmenci
  • Hulusi Malyer
  • Adem Bicakci
Original Article


The pollen morphology of forty taxa of the genus Nepeta L. was studied and documented in detail using light microscopy (LM) and scanning electron (SEM) microscopy in this study. Nepeta L. pollen grains are small to large (P = 18.64–63.46 μm, E = 15.62–46.33 μm), suboblate to perprolate (P/E = 0.86–2.09) in shape and hexacolpate (very rarely tetracolpate) with granular membranes. Alternate position of colpi occurs in six Nepeta taxa, N. nuda ssp. glandulifera, N. concolor, N. crinita, N. congesta var. cryptantha, N. stricta var. stricta and N. sibthorpii ssp. tumeniana. In examinations of exine ornamentation with SEM, two types of pollen grains were recognized: (1) type I, with microreticulate sculpture; and (2) type II with bireticulate sculpture, type I and II to be divided into two and five subtypes, respectively. In the two taxa with microreticulate pattern, N. pilinux and N. sulfuriflora, a tendency towards a bireticulum could be recognized due to traces of secondary tectal connections. The bireticulate exine ornamentation is characterized with varying characteristics of the primary muri and secondary reticulum. Pollen morphology within the genus is compared with infrageneric relationships.


Infrageneric classification Lamiaceae LM Nepeta Pollen morphology SEM 



This study is the Ph.D. thesis of the first author and supported by the Uludag University Research Foundation Centre (project number: 2001/62).


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Copyright information

© Springer-Verlag 2008

Authors and Affiliations

  • Sevcan Celenk
    • 1
    Email author
  • Tuncay Dirmenci
    • 2
  • Hulusi Malyer
    • 1
  • Adem Bicakci
    • 1
  1. 1.Art and Science Faculty, Biology DepartmentUludag UniversityGorukle, BursaTurkey
  2. 2.Necatibey Education Faculty, Department of Biology EducationBalikesir UniversityBalikesirTurkey

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