An Interactive Key to the Genus Galanthus  L.
<ul><li>Genus containing 19 species, 22 principle taxa </li></ul><ul><li>Numerous Additional Hybrids and Cultivars </li></...
Key Identification Elements 1)   Leaf Vernation (Davis, 1999) <ul><li>Three Distinct Forms </li></ul><ul><li>Maintained Th...
Key Identification Elements <ul><li>2) Inner Perianth Segments </li></ul><ul><li>Segment Marking: </li></ul><ul><li>Number...
Key Identification Elements <ul><li>3) Leaf Surface Colour </li></ul><ul><li>High Levels of Variation </li></ul><ul><li>Pr...
Demonstration <ul><li>An Unknown Specimen </li></ul>Bulb dimensions: 2.2 by 2.1cm Sheath dimensions: 3.4 by 0.5cm Leaves: ...
 
 
 
 
 
 
 
 
Leaf Air Spaces G. woronowii G.  ikariae  subsp.  ikariae (Davis & Barnett, 1996) <ul><li>G. woronowii ,  G. ikariae  and ...
<ul><li>Leaf Air Space data is not available for all species </li></ul><ul><li>All entities besides  G. ikariae ,  G. kras...
Species Descriptions G. ikariae G. elwesii
Glossary
References <ul><li>Bishop, M., Davis & A., Grimshaw, J. (2001)  Snowdrops: A Monograph of Cultivated Galanthus  The Griffi...
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An Interactive Key to the Genus Galanthus L.

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Presentation given by Ewan Gage at the KikForum.
Abstract:
The genus Galanthus represents 19 species that have attracted the attention of gardeners for over 400 years and remain attractive ornamentals to this day. Propagation is mainly carried out by bulbs collected from the wild and this has lead to recent concerns regarding their conservation status and as such, the genus is now listed under CITES. This has lead to a demand for tools to aid in the identification of the members of this genus and so an attempt was made to develop an interactive key to the genus. A demonstration is given, alongside an outline of the problems associated with the identification of bulbous monocots and their potential solutions.

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An Interactive Key to the Genus Galanthus L.

  1. 1. An Interactive Key to the Genus Galanthus L.
  2. 2. <ul><li>Genus containing 19 species, 22 principle taxa </li></ul><ul><li>Numerous Additional Hybrids and Cultivars </li></ul><ul><li>Listed under Appendix II of CITES </li></ul><ul><li>Requirement for Identification Tools for use at Point of Entry </li></ul><ul><li>Developed assuming limited Background Knowledge and Technical Capabilities of User </li></ul>
  3. 3. Key Identification Elements 1) Leaf Vernation (Davis, 1999) <ul><li>Three Distinct Forms </li></ul><ul><li>Maintained Throughout Growth </li></ul><ul><li>Little Variation within Species </li></ul>
  4. 4. Key Identification Elements <ul><li>2) Inner Perianth Segments </li></ul><ul><li>Segment Marking: </li></ul><ul><li>Number </li></ul><ul><li>Size </li></ul><ul><li>Shape </li></ul><ul><li>Position </li></ul><ul><li>Segment Margin: </li></ul><ul><li>Presence /Absence of an Apical Notch </li></ul>(Davis, 1999)
  5. 5. Key Identification Elements <ul><li>3) Leaf Surface Colour </li></ul><ul><li>High Levels of Variation </li></ul><ul><li>Principle Range of Dark Green to Glaucous </li></ul><ul><li>Variation between Adaxial and Abaxial Surface in some species </li></ul>
  6. 6. Demonstration <ul><li>An Unknown Specimen </li></ul>Bulb dimensions: 2.2 by 2.1cm Sheath dimensions: 3.4 by 0.5cm Leaves: Supervolute Vernation Dimensions at Flowering: 11 by 1.4cm Surfaces Concolorous; Medium Green in Colour Smooth Surface, with a Matt Finish Inflorescence: Outer perianth Segment dimensions: 2.1 by 1.4cm Inner Perianth Segments with both Apical and Basal Markings Inner Perianth Segments with an Apical Notch (Emarginate) Anthers with an Apiculum
  7. 15. Leaf Air Spaces G. woronowii G. ikariae subsp. ikariae (Davis & Barnett, 1996) <ul><li>G. woronowii , G. ikariae and G. platyphyllus all show supervolute vernation, broad green leaves and a single apical inner perianth marking </li></ul><ul><li>Clear differences evident in Leaf Air Spaces, although limited data set available </li></ul><ul><li>The Air Spaces of G. ikariae are “ big enough that a dressmakers pin may be pushed inside without rupturing the delicate tissue of the leaf ” (Bishop et al. , 2001) </li></ul>
  8. 16. <ul><li>Leaf Air Space data is not available for all species </li></ul><ul><li>All entities besides G. ikariae , G. krasnovii, G. platyphyllus and G. woronowii scored as “Not Scoped” for the Leaf Air Space feature </li></ul><ul><li>Feature remains hidden until only these species remain and the application of this characteristic is required </li></ul><ul><li>Notes included in species description to aid determination </li></ul>
  9. 17. Species Descriptions G. ikariae G. elwesii
  10. 18. Glossary
  11. 19. References <ul><li>Bishop, M., Davis & A., Grimshaw, J. (2001) Snowdrops: A Monograph of Cultivated Galanthus The Griffin Press </li></ul><ul><li>Davis, A.P. (1999) The Genus Galanthus Timber Press, Inc. </li></ul><ul><li>Davis, A.P. & Barnett, J.R. (1997) The Leaf Anatomy of the genus Galanthus L. (Amaryllidaceae J. St.-Hil. Bot. J. Linn. Soc. 123: 333-352 </li></ul>Acknowledgments Many thanks to P. Wilkin and A. Haigh for their Invaluable Assistance

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