The ant (Pheidole megacephala, Fabricius) has a unique and hard mandibular structure to cut branches crush food. Inspired by this special geometric of the teeth, stereoscopic microscope was used view image mandible ant. Origin AutoCAD software were obtain outer profile teeth ant's fitted expressed five-order polynomial function. According analysis curve maxillary fourth tooth is most convex sha...

this study is a review on the genus helvella (pezizales, helvellaceae) in iran. study on samples deposited in iran fungal herbarium along with the fresh materials collected by the author revealed that seven species of helvella, h. acetabulum, h. atra, h. crispa, h. elastica, h. ephippium, h. lacunosa and h. leucopus (as h. monachella) have already been reported from iran. three other species vi...

The genus Thymus L. belongs to the Lamiaceae family, consist of about 215 species of herbaceous perennials and small shrubs in the world. They originated from Mediterranean region. This genus is presented in Iranian flora by 14 species, including: T. daenensis, T. carmanicus, T. fallax, T. persicus, T. trautvetteri, T. migricus, T. kotschyanus, T. pubesens, T. nummularius, T. trans...

This study is a review on the genus Helvella (Pezizales, Helvellaceae) in Iran. Study on samples deposited in Iran fungal herbarium along with the fresh materials collected by the author revealed that seven species of Helvella, H. acetabulum, H. atra, H. crispa, H. elastica, H. ephippium, H. lacunosa and H. leucopus (as H. monachella) have already been reported from Iran. Three other species vi...

The tropical Asian cyprinid genus Puntius is a major part of the ichthyofauna in Southeast Asia. Systematic status of the genus Puntius among Cyprinidae, the most prominent freshwater fish all over the world, remain to be substantiated. The molecular phylogenetic analyses derived from Recombination activating genesequences (RAG2) for 35 representative samples of Malaysian Puntius and their alli...

The genus Carex belongs to tribe Cariceae, subfamily Caricoideae and family Cyperaceae. This genus, with about 2000 species in the world and more than 50 species in Iran, is the largest genus among the family. In expedition to North West and West of Iran, two species, namely, Carex acuta and C. cilicica as new records and C. flava, C. rostrata and C. supina as reinvestigated species are reporte...

The genus Sterigmostemum M. Bieb. belongs to the tribe Hesperideae of the Brassicaceae family. The results of this research confirmed the recognition of five species in Iran: S.incanum, S. sulphureum,  S. ramosissimum,  S. acanthocarpum  and S. longistylum. S. laevicaule is excluded from the genus Sterigmostemum and is regarded as a synonym of Erysimum crassicaule. The new combination, namely, ...

the genus thymus l. belongs to the lamiaceae family, consist of about 215 species of herbaceous perennials and small shrubs in the world. they originated from mediterranean region. this genus is presented in iranian flora by 14 species, including: t. daenensis, t. carmanicus, t. fallax, t. persicus, t. trautvetteri, t. migricus, t. kotschyanus, t. pubesens, t. nummularius, t. transcaspicus, t. ...