Origin and distribution of Pteridophytes in the Mediterranean area
作者:
A.C. Jermy,
期刊:
Webbia
(Taylor Available online 1984)
卷期:
Volume 38,
issue 1
页码: 397-416
ISSN:0083-7792
年代: 1984
DOI:10.1080/00837792.1984.10670314
出版商: Taylor & Francis Group
关键词: distribution;ecology;Mediterranean;origin;palaeoclimates;pteridophytes
数据来源: Taylor
摘要:
The distribution and origins of selected Pteridophyta in the Mediterranean area is discussed. Five main periods and sources are indicated: ancient taxa in Equisetopsida and Lycopodiopsida which had an early Laurasian origin; Polypodiopsida that evolved in deciduous forest of the Northern Hemisphere in Paleocene- Eocene times; elements that arose in the tropics of the Cretaceous-Paleocene flora and developed in the warmer and wetter periods to be residual in the south-west of our area; those later species that secondarily spread from east or south-west Asia. The importance of Gondwanaland as a source of some of the older taxa is also briefly discussed.
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