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A Palynological Study of the Korean Oldenlandia L. (Rubiaceae)  

Nam, Bo Mi (School of Bioresource Science, Andong National University)
Chung, Gyu Young (School of Bioresource Science, Andong National University)
Publication Information
Korean Journal of Plant Taxonomy / v.41, no.2, 2011 , pp. 108-112 More about this Journal
Abstract
The pollen of 5 taxa on Korean Oldenlandia L. was investigated by LM and SEM. The pollen grains were monads, $20.7-36.0{\mu}$m in polar length, with an equatorial diameter of $21.0-38.4{\mu}m$. The pollen shapes were oblate-spheroidal or spherical (P/E ratio 0.93-1.00). The apertures numbered 3-7 in number, colporate in shape, with a colpus length of $4.2-20.4{\mu}m$ and a colpus width of $2.6-3.4{\mu}m$. The sexine was $0.9-2.4{\mu}m$ in terms of its thickness, the surface pattern was reticulate, scabrate or neither. Based on these results, the size of the pollen grain, the number of apertures, and the surface pattern of the sexine were all useful for an interspecific classification. The genus Neanotis, established via the pollen characteristics, was thought to be reviewed in its entity regarding the continuous variation of generic characteristics.
Keywords
Oldenlandia; Pollen size; Aperture; Scabrate;
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