Palynological studies of Gazania longiscapa DC. Arctoteae–Compositae from Pakistan

Authors : Akbar Ali MEO

Pages : 96-99

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Publication Date : 2009-08-15

Article Type : Research Paper

Abstract :Gazania longiscapa DC. Aretoteae – Compositae is perennial scapigerous herb. Pollen grain is radially symmetrical, isopolar, trizono-colporate, lacunate to non-lacunate and echinate. Outline is circular to semi-angular in polar view and circular to spheroidal in equatorial view. Colpi long and broad. Spines are broad at the base and abruptly narrow at the tip. Palynological characters such as equatorial and polar diameter, exine thickness, spine length, number of spine rows between colpi are taxonomically important. The presence of lacunate to non-lacunate pollen is a distinguishing feature of apertural diversity. Pollen data of Gazania longioscapa closely relates with Pluchea lanciolata
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