Utilization of Medicinal plants in treatment of diseases has a long history and human know their beneficial effects for treatment. Since recognition and dissociation Medicinal from unMedicinal plants is very difficult and need long time, then recognize Medicinal plant and dissociate them from other plants can help interested user to utilize.In this survey according botanical resources, based upon evidences, people experiences, perfect questionnaire by grocery in different city of Khuzestan and also field investigation in the four season on fourfold regions of Khuzestan, wrote all Medicinal plant and their dispersion, characteristics of specified growing region, utility and ect. From 950 species in Khuzestan about 225 species were introduced as Medicinal plants in the books and grocerys.Family of Labiatae, Compositae, Papilionaceae and Umbelliferae has most Medicinal plant species in Khuzestan. From this collection, the aromatic plants are worth and number of them is able to develop their industrial cultivation. Medicinal plant that needs the best method to exploitation and the species that must protect to control decay is introduced.

Middle Asia is one of the major centers of origin and diversity of the family Apiaceae. Secretory system and other anatomical peculiarities of many endemic Apiaceae are still poorly investigated. Comparative anatomical study of plant secretory structures has a great theoretical and practical importance in relation to taxonomy, ecology and pharmacology. The paper provides the results of structural investigation of the secretory system of five endemic and Medicinal species of Apiaceae from Middle Asia (Sphaerosciadium denaense, Ferula foetida, F. varia, F. kyzylkumica, Dorema sabulosum). It was revealed that different representatives of the family Apiaceae growing in various habitats have a secretory system represented with terpenoid keeping schizogenous secretory ducts. Desert plants (F. foetida, F. varia, F. kyzylkumica, D. sabulosum) have larger secretory ducts producing more of terpenoids, than a mesophilous relic mountain species S. denaense. The most characteristic structural features of secretory system of S. denaense are small diameter of lumen, small epithelial cells, and the absence of ducts around the xylem of the medullary bundles in the stem and petioles. The structural features of secretory system are specific to each of the investigated plants. The topography and dimensions of secretory ducts are a diagnostic character applied in species identification.

Ziarat Biosphers Reserve covers an area 65I hectares situated in the Golestan provinces, at different altitude (650- 2250 m), in this geographical area, remarkable endemic and unique plants are spreading of their compatibility and extraordinary conformity concerning the environmental a climatic adaptive have been taken in to account among the valuable herbaceous genetic reserves and in order to recognition of their chemical compositions and effective material during the recent decades, extensive researches have been done by different research and university centers. Fortunately, some company agro - industry associations in production of many kind of drugs. The result obtained from their continued efforts is the production of many kinds of drug with herbaceous source which are possessing the justification from the ministry of Health.Non - economical collection if Medicinal plants in traditional from demonstrated the necessity of their cultivations in the form of, echanized cultivatidrs and agro industry associations. Therefore, to achieve the purpose, the recognition of ecologic, phenologic needs of plants in inevitable.In this article 107 plant species are reported from the area. They are including 42 family and 103 genera. Therophytes (20.6%), Hemicryptophyte (11.2%), Geophytes (36.4%) Phanerophytes (19.6%) and chamaephytes (12.1%) are the most important life forms of the reserve.Also traditional Current uses, Botany characteristic, the methods for increasing, geographical distribution, chemical composition, the way of using, usable parts of the plant and finally their Medicinal figures have been presented.

In order to collect and determine Medicinal plants of Kermanshah province, at first a list of Medicinal plants and their localities was prepared based on the floristic list of the Kermanshah province mentioned as Medicinal plants in the related references. Then, stands of the mentioned Medicinal plants were referred according to the topographic maps and the extracted localities and after collecting Medicinal plant specimens, herbarium specimens were prepared based on the traditional taxonomic methods. For each collected plant specimen, habitat characteristics including locality, altitude (elevation above sea level) and the other ecological characteristics of each location were recorded. Furthermore, local names and usable parts were recorded for each species including their local usage. To reassure accordance of the collected specimens with the prepared list of the Medicinal plants, their identification and determination were carried out by the present related references. Collected information about each Medicinal plant species was recorded in the form attached to the related herbarium specimen. The life forms of the determined Medicinal plants were determined based on the Raunkiaer method. Altogether 208 Medicinal species belonging to 198 genera and 72 families were determined.

Bushehr province with an area of about 25360 sq. is beside Persian Gulf. This province was divided into two parts plain regions and mountains regions. Soil of plain regions is salt and sandy - laom and soil of mountains regions is sandy - soil often sandy –laom and alluvial.At first collection and identification of Medicinal plants in Bushehr province with seven town ships which divided to four regions; This project performed for four years (1995 - 1999).In this research 70 species of Medicinal plants were collected and identified. They classified in 70 species, 32 species were herbaceous, 17 bush, 12 shrubs, 7 trees and tubers. Scientific name, altitude and distribution were mentioned in this paper.

The main purpose of this research was collection and identification of Medicinal plants in kerman province. According to condition of soil, topography, temperature, climate and percipitation of this province. We gathered Medicinal plants. 285 species were collected which classified in 200 genera and 71 family. Scientific name, Persian and local name, altitude, habitate conditions and distribution were mentioned in this paper. 72% species were herbaceous and 11.3% were shrubs. More species were distributed in the 1500 2500 meter from sea level.

By regard to sources, aware and informed persons and visible observations were determined 292 Medicinal species and were noted some of information as:Persian, Local, Scientific and Family name, Flowering time, Distribution, Habitate, Altitude, Campanion plants, average annual rainfall and temperature, part used, reason and method of uses for all of plants. This Medicinal plants belonged to 218 Genus and 77 Families, and they distributed in wide Plains, hills and slops (158 species), Mountain regions (103 species), Floodways, springs streams and wetty regions (26 species), salty and comparatively salty regions (16 species), Coastal sandy hills (16 species).As among of these, 209 species are native and 172 species have traditional cure uses.

The research project of collection and identification of Medicinal plants of Zanjan province was studied during 2000-2003 and 217 species of Medicinal plants were collected and identified. They are classified in 68 families. The most number of Medicinal species belongs to compositae (27 species). Before this study about 49 species were identified as Medicinal plants in Zanjan province and now we have identified and introduced 163 species.