title: Contributions regarding the leaf histo-anatomy of some Pelargonium species.
abstract: Pelargonium L. genra (Fam. Geraniaceae) includes over 250 species, most of it native to southern Africa. Nowadays, four perennial species are cultivated in Romania as ornamental plants. Our aim was to establish the main characteristics and differences that occur between Pelargonium zonale, P. hispidum, P. grandiflorum, P. peltatum and P. radens. All in all, the quantitative differences (regarding the leaf-stalk, blade and trichomes) have a taxonomical value for all five species included in the research.
  
  
  METHODS
  The plant material was represented by fresh leaves harvested from 5 species of Pelargonium: P. peltatum (L.) Aiton, P. radens H.E. Moore, P. grandiflorum (Andrz.) Willd., P. hispidum. (anthesis phase) and preserved in ethanol 70%. Using a dissecting microscope, sections were made through leaf blade surface and cross sections of/ for leaf stalk and blade.
  
  
  RESULTS
  The common characteristics of the leaf is the palmatilobate blade with long petiole. Although many studies regarded glandular trichomes from Pelargonium leaves, most of the leaf structures are still unknown. The most important for the quality and quantity of essential oil extracted from Pelargonium sp. are trichoms.
authors: Department of Pharmacognosy, University of Medicine and Pharmacy Grigore T. Popa, laşi.
authors: Cristina Elena
authors: CE
authors: Lancu
authors: Department of Pharmacognosy, University of Medicine and Pharmacy Grigore T. Popa, laşi.
authors: Oana
authors: O
authors: Cioanca
authors: Department of Pharmacognosy, University of Medicine and Pharmacy Grigore T. Popa, laşi.
authors: Cornelia
authors: C
authors: Mircea
authors: Department of Pharmacognosy, University of Medicine and Pharmacy Grigore T. Popa, laşi.
authors: Monica
authors: M
authors: Hăncianu
mesh_terms: D008854:Microscopy, Electron; D009822:Oils, Volatile / Q000737:chemistry / Q000494:pharmacology; D031316:Pelargonium / Q000033:anatomy & histology* / Q000737:chemistry / Q000145:classification; D018515:Plant Leaves / Q000033:anatomy & histology* / Q000737:chemistry; D010946:Plants, Medicinal / Q000033:anatomy & histology* / Q000737:chemistry; D012383:Romania
chemical_list: D009822:Oils, Volatile