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Morpho-anatomical investigations of cones and pollen in Cathaya argyrophylla Chung & Kuang (Pinaceae, Coniferales) under systematical and evolutional aspects

Morpho-anatomical investigations of cones and pollen in Cathaya argyrophylla Chung & Kuang (Pinaceae, Coniferales) under systematical and evolutional aspects

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DÖRKEN, Veit Martin, Hubertus NIMSCH, 2015. Morpho-anatomical investigations of cones and pollen in Cathaya argyrophylla Chung & Kuang (Pinaceae, Coniferales) under systematical and evolutional aspects. In: Feddes Repertorium. 125(1-2), pp. 25-38. ISSN 0014-8962. eISSN 1522-239X

@article{Dorken2015Morph-36987, title={Morpho-anatomical investigations of cones and pollen in Cathaya argyrophylla Chung & Kuang (Pinaceae, Coniferales) under systematical and evolutional aspects}, year={2015}, doi={10.1002/fedr.201400035}, number={1-2}, volume={125}, issn={0014-8962}, journal={Feddes Repertorium}, pages={25--38}, author={Dörken, Veit Martin and Nimsch, Hubertus} }

Nimsch, Hubertus Morpho-anatomical investigations of cones and pollen in Cathaya argyrophylla Chung & Kuang (Pinaceae, Coniferales) under systematical and evolutional aspects Dörken, Veit Martin The results of the morpho-anatomical investigations show that seed- and pollen-cones of Cathaya represent the typical bauplan for Pinaceae. Several features were found that suggest a closer relationship of Cathaya to Picea and Pinus on the one hand and also to Larix and Pseudotsuga on the other hand. However, the large pollen-cones of Cathaya resemble in length and number of microsporangiophores those of Cedrus. Cathaya shows also features that are unique among recent Pinaceae like a sylleptic flush of shoots and seed-cones. Also the absence of bud scales surrounding the seed-cone and the special microstructure of the pollen grain surface are unique. These features suggest a rather isolate position for Cathaya among recent Pinaceae. Some anomalous microsporangiophores showing three instead of the typical two sporangia lead to the idea that the hyposporangiate microsporangiophores in Pinaceae might be structures derived from a former perisporangiate type as shown for Taxaceae. Dörken, Veit Martin 2017-01-30T14:20:51Z Nimsch, Hubertus 2017-01-30T14:20:51Z 2015 eng

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