1. bookVolume 11 (2012): Issue 2 (December 2012)
Journal Details
License
Format
Journal
eISSN
1854-9829
ISSN
1581-4661
First Published
10 Jul 2007
Publication timeframe
2 times per year
Languages
English
access type Open Access

Morphological Varia Tions of Fertile Spike in Helminthostachys Zeylanica (L.) Hook

Published Online: 28 Dec 2012
Volume & Issue: Volume 11 (2012) - Issue 2 (December 2012)
Page range: 271 - 275
Journal Details
License
Format
Journal
eISSN
1854-9829
ISSN
1581-4661
First Published
10 Jul 2007
Publication timeframe
2 times per year
Languages
English
Abstract

The evolutionary history of Ophioglossaceae is enigmatic mainly because fossils of the family trace back only from the earliest Tertiary. Phylogenetic analyses indicate that Helminthostachys is sister to the broadly defined Botrychium. Generally the sporophore of Botrychium is a pinnately compound, whereas it is simple in Helminthostachys. Here examples of different Helminthoistachys are represented which show double or triple spikes with some variations. Plants showing variations in their spike morphology are also grown normally. Variations of Helminthostachys spike morphology indicate a tendency to form a compound sporophore structure and in that way have a strong relationship with Botrychium.

Keywords

Ključnebesede

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