ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] A WIDELY used classification of vascular plants has recognized four divisions: Psilopsida, Lycopsida, Sphenopsida and Pteropsida1. The first three have been erected in the course of time out of Jeffrey's2,3,5,5α original Lycopsida. The fourth has not been changed ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/160836b0
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