American Journal of Plant Sciences

Volume 2, Issue 2 (June 2011)

ISSN Print: 2158-2742   ISSN Online: 2158-2750

Google-based Impact Factor: 1.57  Citations  

Pollen Morphology of Tribes Gnaphalieae, Helenieae, Plucheeae and Senecioneae (Subfamily Asteroideae) of Compositae from Egypt

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DOI: 10.4236/ajps.2011.22014    8,418 Downloads   14,275 Views  Citations

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ABSTRACT

POLLEN morphology of twenty five species representing 12 genera of tribes Gnaphalieae, Helenieae, Plucheeae and Senecioneae (Asteroideae: Asteraceae) was investigated using light and scanning electron microscopy. The genera are Phagnalon, Filago, Gnaphalium, Helichrysum, Homognaphalium, Ifloga, Lasiopogon, Pseudognaphalium, Flaveria, Tagetes, Sphaeranthus and Senecio. Two pollen types were recognized viz. Senecio pollen type and Filago pollen type. Description of each type, a key to the investigated taxa as well as LM and SEM micrographs of pollen grains are provided.

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Osman, A. (2011) Pollen Morphology of Tribes Gnaphalieae, Helenieae, Plucheeae and Senecioneae (Subfamily Asteroideae) of Compositae from Egypt. American Journal of Plant Sciences, 2, 120-133. doi: 10.4236/ajps.2011.22014.

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