| Pak. J. Bot., 34(1): 9-22, 2002 | Back to Contents | ||||
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Updated: 24-05-12 | ||||
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Pollen morphology of Inula L. (s.str.) and its allied genera (Inuleae-Compositae)
from Pakistan and Kashmir Rubina Dawar, Mohammad Qaiser and Anjum Perveen Abstract: The pollen morphology of 22 species of Inula L. (s.str.) and its allied genera has been examined from Pakistan and Kashmir by light and scanning electron microscopy, Pollen grains are Usually radially symmetrical, isopolar, prolate-spheroidal rarely oblate-spheroidal, tricolporate occasionally tetracolporate, zonoaperturate, Sexine slightly thicker than nexine or as thick as nexine. Tectum echinate, spines with acute-acuminate Or rounded apices. On the basis of pollen size and tectum pattern in between spines, 3 major pollen types viz., Pollen type L Duhaldea cappa. Pollen type 11: Inula acuminata, Pollen type III: Pentanema divaricatum are recognized. |
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