Nutlet morphology of six Clinopodium taxa, previously treated as Acinos, in Turkey

Abstract

A group of Lamiaceae that has caused confusion over its generic boundaries are those species belonging to the complex surrounding the genera Satureja, Calamintha, Micromeria, Clinopodium and Acinos. In the current study, nutlet morphology of six Clinopodium taxa, previously treated as Acinos in Flora of Turkey, is studied for the first time using stereoscopic and scanning electron microscopy SEM , and detailed descriptions and illustrations of nutlets are described and illustrated here. According to our results, the nutlets are trigonous and oblong or obovoid shaped. The size of nutlets ranges from 1.2-2.2 mm in length and 0.6-1.5 mm in width. They are brown or dark brown in colour, and the surface patterns are papillate, cellular, ridged, reticulate-ridged or reticulate-areolate. Because nutlet surface shows variations from population to population, Clinopodium alpinum syn: Acinos alpinus and C. graveolens subsp. rotundifolium syn: A. rotundifolius should be described as species complexes. Our results show that the nutlet surface can be useful as a taxonomic character

Keywords

• Acinos,Clinopodium,Lamiaceae,nutlet,morphology

Öncesinde Acinos olarak bilinen Türkiye’deki altı Clinopodium taksonunun nutlet morfolojisi

Abstract

Lamiaceae’nin Satureja, Calamintha, Micromeria, Clinopodium ve Acinos cinslerine ait türlerin bir grubu genel sınırları içinde karışıklığa neden olmaktadır. Bu çalışmada, öncesinde Acinos olarak bilinen Türkiye Florası’ndaki altı Clinopodium taksonunun nutlet morfolojisi stereo ve taramalı electron mikroskobu SEM kullanılarak ilkkez çalışılmış ve nutletlerin ayrıntılı tanımları ve resimleri burada verilmiştir. Sonuçlarımıza göre, nutletler üçgenimsi, oblong ya da obovoid şekillidir. Nutletler 1.2-2.2 mm uzunluğunda ve 0.6-1.5 mm genişliğindedir. Kahverengi ya da koyu kahverengi renginde ve yüzeyleri papilli, hücresel, damarlı, ağsı-damarlı ya da ağsı-adacıklıdır. Nutlet yüzeyleri populasyondan, populasyona farklılık göstediği için Clinopodium alpinum syn: Acinos alpinus ve C. graveolens subsp. rotundifolium syn: A. rotundifolius kompleks türler olarak tanımlanmıştır. Çalışma sonuçlarımız nutlet yüzeylerinin taksonomik bir karakter olarak faydalı olabilileceğini göstermektedir

Keywords

• Acinos,Clinopodium,Lamiaceae,morfoloji,tohum

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