Showing 10 results for Flora
Hassan Zare- Maivan, Javad Mohammadi, Hamid Ejtehadi- Bajestani, Karim Pasad,
Volume 1, Issue 1 (12-2014)
Abstract
Kasf forest, with an area of over 12 ha, running in the east-west direction and located at a distance of 20 kilometers in the north of the city of Bardaskan in a mountainous arid region. The minimum and maximum temperature of the area ranges between -10° C and +45° C. The average annual precipitation of the region is 155 mm. The altitude of the forest is about 1600 m above sea level with a 15% slope. The vegetation of this forest was studied using floristic methods 2 years after a devastative fire and life forms and geographical distributions of plant species were determined. Sixty nine plant species belonged to 29 families (25 Dicots, 3 monocots and one gymnosperm). The largest families were the Lamiaceae with 11, Asteraceae with 9 and Caryophyllaceae with 5 species. The percentages of life forms were determined as follows: Therophytes with 36% (25 species), Hemicryptophytes with 29% (20 species), Chamaephytes with 16% (11 species), Phanerophytes with 13% (9 species) and Cryptophytes with 6% (4 species) of total investigated species. The high percentage of Hemicryptophytes indicated the dominance of cold mountainous climate and the presence of Asteraceae species such as harmala (Peganum harmala) showed that a severe disturbance had taken place in the region, which indicated a poor ecological administration in the studied region.
Farrokh Ghahremaninejad, Atiye Nejad Falatoury,
Volume 3, Issue 1 (6-2016)
Abstract
The increasing influence of APG classification system necessitates an update on taxa recorded in most regional floras including Iran. Many changes in circumscriptions of families and orders have occurred in APG in comparison with other classification systems. However, here we only attempt to emphasize on changes in the Iranian flora, especially in comparison with “Flora Iranica” and “Flora of Iran”. Of the overall 132 family names which have been mentioned here, 22 families are not found in Flora Iranica. Based on the APG IV system, 21 families which had been mentioned in Flora Iranica for Iran should be merged with other families. Accordingly, the angiosperms of Iran comprise 8012 species, approximately 1234 genera and 132 families placed in 39 orders. Gymnosperms (17 spp.), ferns (60 spp.) and mosses (534 spp.) included, the number of plant species of Iran exceeds approximately 8628 species. The largest angiosperms families of Iran are Fabaceae (1401 spp.) and Asteraceae (1234 spp.) in terms of number of species, and Asteraceae, Poaceae, Apiaceae and Fabaceae in terms of number of genera. The largest angiosperm order of Iran in terms of family number is Caryophyllales. The largest genera of Iran are Astragalus with about 830 species and Cousinia with about 280 species. In the two latest versions of APG a linear sequence of families is provided to be used by herbarium curators.
Abbas Gholipour, Masume Golshahi,
Volume 3, Issue 3 (12-2016)
Abstract
In a revision of annual Silene species some interesting specimens were observed, which belonged to the sp-ecies that had not been previously reported in detail from Iran. In this paper S. nocturna from the section Scorpioideae was added to the checklist of the third important genus of the flora of Iran, i.e. Silene, and new localities for S. gallica from the section Lasiocalycinae were reported. The description, geographical distribution in Iran and photos of each sp-ecies were also presented
Mahdieh Jafariparizi, Saeed Afsharzadeh, Hamid Reza Akkafi, Shabnam Abbasi,
Volume 4, Issue 3 (12-2017)
Abstract
To investigate the Artemisia vegetation in Isfahan Province, two rangelands of Khorous Galu in the southwest and Ashan in the west of Isfahan were selected. These rangelands are mountainous with semiarid climate. In Khorous galu, 68 species belonging to 50 genera and 24 families were identified. Life forms included hemicryptophytes (39%), therophytes (27.5%), chamaephytes (19%), geophytes (13%) and phanerophytes (2%). Chrotypes existent in Khorous Galu were composed of 56 Irano-Turanian species, 3 Euro-Siberian-Irano-Turanian species, 4 Euro-Siberian-Irano-Turanian-Mediterranean species, 2 Irano-Turanian-Mediterranean species, 1 Irano-Turanian-Saharo-Sindian species and 1 cosmopolitan species. In Ashan area, 88 species belonging to 67 genera and 29 families were identified. Hemicryptophytes (39%), therophytes (28%), geophytes (17%), chamaephytes (15%) and phanerophytes (1%) were the life form composition of the region flora. 73 Irano-Turanian species, 7 Euro-Siberian-Irano-Turanian species, 4 Irano-Turanian-Mediterranean species, 1 Irano-Turanian-Mediterranean-Euro-Siberian species and 1 cosmopolitan species were identified. 2 species were recorded from Isfahan Province for the first time. With regard to the similarity of flora in both regions, that is due to effective similar environmental factors, a uniform management plan for A. aucheri rangelands in Isfahan Province could be selected.
Mina Khorasani, Shahryar Saeidi Mehrvarz, Shahin Zarre,
Volume 5, Issue 3 (12-2018)
Abstract
Allium ampeloprasum (Amaryllidaceae) is recorded as a new taxon for the flora of Iran. It is morphologically most similar to Allium atroviolaceum and Allium iranicum. This species is compared with its two aforementioned relative species and some notes are given on its affinities. A full description, images and a distribution map are also provided. In addition, a lectotype is selected for A. atroviolaceum.
Farideh Attar, Valiollah Mozaffarian, Mansour Mirtadzadini,
Volume 5, Issue 3 (12-2018)
Abstract
Cousinia elymaitica, which has been collected from western Iran, is described in this paper as a new species. This new species has been assigned to the sect. Pugioniferae on the basis of its habit, purple corolla and decurrent leaves. Its closest related species is C. macroptera. A distribution map and an illustration of the related specimens have also been provided.
Maneezheh Pakravan, Sahar Moradpoor, Azizollah Jafari,
Volume 5, Issue 4 (3-2019)
Abstract
Vegetation is one of the most important parts of natural ecosystems that in addition to express of the growth conditions, it also shows the influence of ecological factors on the environmental condition. Investigations of plant diversity of a country are necessary for studyingthe ecosystem, pasture, plant gene bank, agriculture and medicine. On the one hand, identification of plant species of different regions provide feasibility of doing of next studies in the different fields of biological science. In this research the flora of Tang sorkh region in the Kohgiloyeh county from Kohgiloyeh-va boyerahmad province has been investigated. The area of mentioned region is 5000 hectares and it is located in 30 kilometers from the east of Yasuj. Maximum altitude of the area was between 1800-2800 m. Our research has started by collecting the essential information of the region. The plants of region have been collected and prepared for studying. several floras were used for identification the specimens and they are preserved in Alzahra University herbarium (ALUH). This investigation showed that in the Tang sorkh region, there are 46 families, 145genera, 172 species that include 6/97% of phanerophytes, 5/23% chamephyts, 43/60%hemicryptophytes, 13/95% geophytes, 28/48% therophytes. Analyses shows that most of species of region belongs to the Iran-o-Turanian region which contanins 5/69% of region’s flora. 23 species are endemic to Iran, 20 of which are rare species, 30 species are medicinal plant, 22 of which are poison. Totaly about 172 species has identified. 20 species are recorded for the first time from this province.
Mohammad Mehdi Dehshiri, Masoume Sepahvand, Akram Rashnoo,
Volume 5, Issue 4 (3-2019)
Abstract
The aim of this research was to identify the plant species, introducing the flora and plant geographical distribution of Chaghalvandi area, Lorestan Province. This area, with 2000 hectares, is situated in the north of Lorestan Province, where the amount of annual precipitation is 481.79 mm and mean annual temperature is 15.32°C. Plant samples were collected from different parts of the area between 1500-2800 m during two growing seasons 2011-2012. The life form of plant species was determined using the Raunkiaer’s method. The position of this area, in terms of phytogeographical classification, was investigated on the basis of geographical distribution data and references. From 206 identified vascular plant species in Chaghalvandi area, 2 Pteridophytes, 183 dicotyledons and 21 monocotyledons were found to be present. These species belong to 55 families and 142 genera. The largest families in terms of the number of collected species were Fabaceae, Asteraceae and Lamiaceae with 14.07%, 11.16% and 10.68%, respectively. Therophytes, with 78 species (37.86%), was the most frequent life form observed. 102 species (49.51%) belonged to Irano-Turanian region; 12 taxa of them were endemics of Iran, among which the distribution of Cousinia khorramabadensis Bornm. Was limited to Lorestan Province.
Asghar Zamani,
Volume 9, Issue 3 (12-2022)
Abstract
The seed micromorphological characters of 15 taxa of Iranian Pyrus comprising 22 individuals were examined by Scanning Electron Microscopy (SEM) and Digital Microscopy (DM) for the first time in this survey. For the assessment of probable ecological effects, several individuals of some widespread species were studied. After collecting several samples of each wild taxa of Pyrus from different localities in a ten-year period, the specimens were identified by means of the examination of type specimens and different Floras. After the examination of the seeds surface, qualitative (e.g., shape and ornamentation of seeds including areolate, foveate, reticulate, colliculate, striate and undulate types) and quantitative characters (e.g., size of seeds, size of surface cells and thickness of cell walls) were assessed. Statistical analyses were performed on the data using SPSS software. According to these observations, seed morphological characters showed to have a considerable variation even among the different individuals of the same species, verifying complexity of the genus as revealed by the different approaches which were previously reported. However, some descriptive characters of seeds such as shape, size, surface ornamentation type, cell size and cell wall thickness are presented for the first time for the genus.
Mahmoud Bidarlord, Mohamad Dehdar Dargahi, Adel Jalili,
Volume 10, Issue 1 (6-2023)
Abstract
Solanum chenopodioides is introduced here as a new record for the flora of Iran from the coastal areas of the Caspian Sea, Guilan province. This species grows in Bujagh National Land-Sea Park, on sand dunes, along with other coastal psammophytic plants. This species belongs to the Morelloid clade. It differs from the related species S. nigrum, by its shrubby nature, perfect leaves margin, dull berries, bi-colored petals in the middle, and peduncle that bends a bit downwards in fruit. This plant is native to southern South America. It is introduced as a common weed all over the world; in addition, this species is considered an alien species for the flora of Iran. Transit of goods, especially wool, to the different parts of the world is one of the ways of the spread of this species all over the world. In addition to providing some pictures of the plant, some notes about the distribution and ecology of this species were also provided in this paper. The numerous reports of alien species from Bujagh National Park in recent years could be regarded as a credible warning for the stability of native vegetation of the area and existing ecosystems.
