Comparative anatomical characteristics of petiole of native species of the genus Spiraea (Rosaceae) in the flora of Ukraine

Belemets N.M.; Nuzhyna N.V.; Fedoronchuk M.M.

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Ukr. Bot. J. 2017, 74(2): 189–194

https://doi.org/10.15407/ukrbotj74.02.189

Structural Botany

Comparative anatomical characteristics of petiole of native species of the genus Spiraea (Rosaceae) in the flora of Ukraine

Belemets N.M.¹, Nuzhyna N.V.¹, Fedoronchuk M.M.²

¹O.V. Fomin Botanical Garden, ESC Institute of Biology of Taras Shevchenko National University of Kyiv
1, Simon Petliura Str., Kyiv 01032, Ukraine
²M.G. Kholodny Institute of Botany, National Academy of Sciences of Ukraine
2, Tereshchenkivska Str., Kyiv 01004, Ukraine

Abstract

In order to find additional diagnostic features, the anatomical structure of petioles of eight species of Spirae in the flora of Ukraine was studied. It was established that the following anatomical features are significant diagnostic characters: shape of petiole cross-section; presence, location and shape of trichoma; cuticle thickness on the outer cell wall of petiole epidermis; pecularities of the structure of vascular system; number of inclusions of calcium oxalate around the main vascular bundle. It was shown that morphologically well-defined species, S. hypericifolia, S. crenata, and S. chamaedryfolia, essentially differ in anatomical features of petiole structure. A presence of significant distinctions in the structure of petioles of the related species S. media and S. polonica is an additional argument for taxonomic separation of the latter one, whereas the absence of such features in morphologically close species S. ulmifolia and S. chamaedryfolia may be an additional confirmation of the uncertain status of S. ulmifolia.

Keywords: Spiraea, petiole, anatomical features, morphometric parameters, taxonomy, flora of Ukraine

Full text: PDF (Ukr) 1.23M

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