Author: آمنه غلامی 
Postia puberula Boiss. & Hausskn. in Boiss.
Parvin Salehi Shanjani, Sara Nikkhah and Hamze Shirali Mardi
Natural Resources Gene Bank, Research Institute of Forests and Rangelands, Agricultural Research, Education and Extension Organization, Tehran, Iran.
Uploaded at July 2025
Scientific editor: Masoumeh Izadpanah
Seed Storage
The storage behavior of this species is orthodox (desiccation-tolerant seeds), dry to 15-20% eRH, and store at -20°C.
Germination requirements
The seeds of this species are not dormant. Sterilize seeds before placing them on wet germination paper. Place seeds for two weeks at 4 ºC to germinate uniformly. Then germinate under an alternating temperature regime of 15/20 ºC (the higher temperature for 16 hours in light and the lower one for eight hours in dark).
Morphology
Fruit type: Achene
Fruit shape: Tetragonal, with a biceriate pappus at the top, outers very short, persistent, inners 2-3 short caduceus papllias, scabrous at the end.
Fruit size: Length 1.78 to 1.98 mm, width 0/41 to 0/45 mm in an accession from Lordeghan, Chaharmahal Va Bakhtiyari, with 1000 seeds weight 0.1 g, which was collected and identified in 2016 by Hamze Shirali Mardi and is stored in the Natural Resources Gene Bank of Iran with the accession number of 46312.
1000 seed weight: 0.1 g
Biological features
Life form: Erect, Perennial Subshrub, woody at the base, pubescent, 40 to 50 cm high
Inflorescence, flower type, and pollination mechanism: Inflorescence cylindrical capitulum. Flowers solitary, hermaphrodite, Peduncle 1 – 6mm long, bracts multiseriate and pubescent. Plant monoecious, cross-pollinated. Pollination is carried out by insects and wind.
Time of flowering: late spring to early summer.
Time of seed ripening: June to July
Seed dispersal methods: Seed weight
Geographical distribution: Endemic to Iran
Distribution in Iran: West and, southwest. Mostly in Kermanshah, Lorestan and Khuzestan
Taxonomy
Family: Asteraceae
Genus: Postia
Species: P. puberula
Persian name: –
References and Links
Black, M. and Bewley, J.D. 2000. Seed technology and its biological basis. Sheffield Academic Press, 1-419 P.
Bojňanský, V. and Fargašová, A. 2007. Atlas of seeds and fruits of central and East-European flora: the Carpathian Mountains region. Springer, Dordrecht, The Netherlands, 1046 P.
Ghahraman, A. Flore of Iran. Research Institute of Forests and Rangelands with University of Tehran Publication. https://floraofiran.net/index.php.
Mozaffarian, V.A. 1998. Dictionary of Iranian plants names. Farhange Moaser Publisher, Tehran, 671 P.
Mozaffarian, V., Ghahremaninezhad, F., Narimisa, S., Jafari, E., Kazampour, Sh., Lotfi, E. and Asadi, M. 2008. Flora of Iran, Asteraceae (Compositae): Institute of Forests and Rangelands Press, Tehran, Iran, Publication No. 144, 1023 pp.
Mozaffarian, V.A. 2012. A Pictorial dictionary of botany. Farhange Moaser Publisher, Tehran, 1088 P.
Sharma, O.P. 2009. Plant taxonomy 2E. Tata McGraw-Hill Education, New Delhi, 563 P.
