Evolving words and the egg-bearing tubes of Welwitschia (Welwitschiaceae)

Am J Bot. 2015 Feb;102(2):176-9. doi: 10.3732/ajb.1400537. Epub 2015 Feb 5.

Author

William E Friedman¹

Affiliation

¹ Department of Organismic and Evolutionary Biology, 26 Oxford Street, Harvard University, Cambridge, Massachusetts 02138 USA; and Arnold Arboretum of Harvard University, 1300 Centre Street, Boston, Massachusetts 02131 USA.

PMID: 25667070
DOI: 10.3732/ajb.1400537

No abstract available

Keywords: Gnetales; Welwitschia; alternation of generations; gametophyte; prothallial tubes; seed plants.

MeSH terms

Biological Evolution*
Gnetophyta*
Ovule*
Phylogeny*
Reproduction