Abstract
Nine species from genera including Aloe, Asphodelus, Eremurus, and Hemerocallis (from subfamilies Asphodeloideae and Hemerocallidoideae) were examined by LM (Light Microscopy) and SEM (Scanning Electron Microscopy). Moreover, two species from Aloe and Eremurus were selected (Aloe vera and Eremurus spectabilis) and examined by TEM (Transmission Electron Microscopy). Our results showed that some qualitative (exine ornamentation from central and distal regions of the pollen grains and sulcus margin exine ornamentation) and all quantitative characteristics were varied. Dendrogram of the palynological characteristics constructed three pollen types (type 1 or Eremurus-Aloe type, type 2 or Asphodelus type, and type 3 or Hemerocallis type) that partly supported the genera level of the cladogram resulted from recent phylogenetical research and taxonomical issues. Also, the situation of subgenera from Eremurus was heterogenous in the palynological dendrogram. The studied species of Aloe and Eremurus were placed in type 1. The ultrastructure data, such as sporoderm thickness and number of intine layers in the sulcus margin region provided a better resolution for their differentiation from two selected species of these genera.
References
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<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><span lang="en-GB">Erdtman, G. (1960) The acetolysis technique: a revised description. </span><span lang="en-GB"><em>Svensk Botanisk Tidskrift </em></span><span lang="en-GB">54: 561–564.</span></span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><span lang="en-GB">Halbritter, H., Silva, U., Grimsson, F., Weber, M., Zetter, R., Hesse, M., Buchner, R., Svojtka, M. & Frosch-Radivo, A. (2018) </span><span lang="en-GB"><em>Illustrated pollen terminology</em></span><span lang="en-GB">. Second Edition, Springer, New York. https://doi.org/10.1007/978-3-319-71365-6</span></span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><span lang="en-GB">Hedge, I. & Wendelbo, P. (1963) Notes on the giant Asphodels of Afghanistan. </span><span lang="en-GB"><em>Journal of Royal Horticultural. Society</em></span><span lang="en-GB"> 88 (9): 402–406.</span></span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><span lang="en-GB">Hesse, M., Halbritter, H., Zetter, R., Weber, M., Buchner, R., Frosch-Radivo, A. & Ulrich, S. (2009</span><span lang="en-GB"><em>) Pollen Terminology (An illustrated handbook). </em></span><span lang="en-GB">Springer, New York, 266 pp.</span></span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><span lang="en-GB">Ghahreman, A. (1995) </span><span lang="en-GB"><em>Plant systematics cormophytes of Iran.</em></span><span lang="en-GB"> Tehran: University Publication Center: Iran.</span></span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><span lang="en-GB">Grace, O.M., Klopper, R.R., Smith, G.F., Crouch, N.R., Figueiredo, E., Rønsted, N. & Van Wyk, A.E. (2013) A revised generic classification for </span><span lang="en-GB"><em>Aloe</em></span><span lang="en-GB"> (Xanthorrhoeaceae subfam. Asphodeloideae). </span><span lang="en-GB"><em>Phytotaxa</em></span><span lang="en-GB"> 76 (1): 7–14. https://doi.org/10.11646/phytotaxa.76.1.2</span></span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><span lang="en-GB">Kosenko, V.N. & Sventorzhetskaya, O.Y. (1999) Pollen morphology in the family Asphodelaceae (Asphodeleae, Kniphofieae). </span><span lang="en-GB"><em>Grana</em></span><span lang="en-GB"> 38: 218–227. https://doi.org/10.1080/001731300750044609</span></span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><span lang="en-GB">Kovach, W. (1999) </span><span lang="en-GB"><em>MVSP-A MultiVariate Statistical Package for Windows, ver. 3.1 </em></span><span lang="en-GB">Kovach Computing Services. Pentraeth, Wales, Great</span></span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><span lang="en-GB">McLay, T.G.B. & Bayly, M.J. (2016) A new family placement for Australian blue squill, </span><span lang="en-GB"><em>Chamaescilla</em></span><span lang="en-GB">: Xanthorrhoeaceae (Hemerocallidoideae), not Asparagaceae. </span><span lang="en-GB"><em>Phytotaxa</em></span><span lang="en-GB"> 275 (2): 097–111. https://doi.org/10.11646/phytotaxa.275.2.2</span></span></span></span></p>
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