Showing 3 results for تاکسونومی
Jamil Vaezi, Fatemeh Batyari, Hamid Ejtehadi, Mohammad Farsi, Mohammad Reza Joharchi,
Volume 11, Issue 4 (2-2012)
Abstract
The genus Salvia is morphlogically investigated to provide an identification key based on morphological characters in the Northeast of Iran. In this study, we examined more than 350 herbarium and collected specimens of different populations and measured 79 quantitative and qualitative (vegetative and generative) characters. The results of the multivariate analysis (principal component analysis) and Nonparametric Test (K independent samples) indicate that the morphological characters such as blossom shape, ring of trichome inside of corolla and protrusion style differentiated the Salvia species. For the first time, the species Salvia shariffi is reported in the Jonoubi and Shomali Khorassans.
M Assadi, F. Ghahremaninejad, T. Nejadsattari, I. Mehregan, K. Poursakhi,
Volume 14, Issue 3 (10-2014)
Abstract
Genus Cerastium belongs to the subfamily Alsinoideae. This genus is represented with about 30 species in two subgenera (subgenus Dichodon and subgenus Cerastium) and three sections (sect. Strephodon, sect. Orthodon and sect. Schizodon) in flora Iranica area, of which 19 species were reported from Iran. The materials in the TARI herbarium were studied. The vegetative and reproductive characteristics of specimens were checked by stereomicroscope. In family Caryophyllaceae, the seeds bear numerous characters which can be used for taxonomic purposes. The ornamentation features of the seed surface and its relief are different from one species to another. The seeds were carefully taken from mature and dehiscent capsules. Pollen grains obtained from flowers bearing mature anthers. In this paper, Cerastium pentandrum (Caryophyllaceae) is reported as a new record from northwest Iran and Iranian plateau. It belongs to the subg. Cerastium sect. Orthodon. In this section teeth of the capsule are elongated, straight or reflexed, with flat or recurved margins. Morphological characteristics of the new record are provided. This taxon is compared with its closest relative C. balearicum. The ultrastructure of seed and pollen is examined by SEM.
Volume 18, Issue 49 (11-2006)
Abstract
Anthemideae is one of the largest tribes of Asteraceae. This investigation is based on a study on about 700 specimens belong to Anthemideae in Khorassan. During of this study two taxa were recorded, Tanacetum kotschyi, Achillea millefolium subsp. millefolium for the first time for the Flora of Khorassan, Iran.Tanacetum budjnurdense was collected after recording the sample type in 1950 from different location for the first time. Distribution maps and key to the genera and species occurring in Khorassan were finally provided.
