an interactive key to the genus galanthus l.. genus containing 19 species, 22 principle taxa...

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An Interactive Key to the Genus Galanthus L.

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Page 1: An Interactive Key to the Genus Galanthus L.. Genus containing 19 species, 22 principle taxa Numerous Additional Hybrids and Cultivars Listed under Appendix

An Interactive Key to the GenusGalanthus L.

Page 2: An Interactive Key to the Genus Galanthus L.. Genus containing 19 species, 22 principle taxa Numerous Additional Hybrids and Cultivars Listed under Appendix

• Genus containing 19 species, 22 principle taxa

• Numerous Additional Hybrids and Cultivars

• Listed under Appendix II of CITES

• Requirement for Identification Tools for use at Point of Entry

• Developed assuming limited Background Knowledge and Technical Capabilities of User

Page 3: An Interactive Key to the Genus Galanthus L.. Genus containing 19 species, 22 principle taxa Numerous Additional Hybrids and Cultivars Listed under Appendix

Key Identification Elements

1) Leaf Vernation

(Davis, 1999)

• Three Distinct Forms• Maintained Throughout Growth• Little Variation within Species

Applanate Explicative SupervoluteApplanate Explicative Supervolute

Page 4: An Interactive Key to the Genus Galanthus L.. Genus containing 19 species, 22 principle taxa Numerous Additional Hybrids and Cultivars Listed under Appendix

Key Identification Elements

2) Inner Perianth Segments

Segment Marking:• Number• Size• Shape• Position

Segment Margin:• Presence /Absence of an Apical Notch

(Davis, 1999)

Page 5: An Interactive Key to the Genus Galanthus L.. Genus containing 19 species, 22 principle taxa Numerous Additional Hybrids and Cultivars Listed under Appendix

Key Identification Elements

3) Leaf Surface Colour

• High Levels of Variation• Principle Range of Dark Green to Glaucous• Variation between Adaxial and Abaxial Surface in some species

Page 6: An Interactive Key to the Genus Galanthus L.. Genus containing 19 species, 22 principle taxa Numerous Additional Hybrids and Cultivars Listed under Appendix

DemonstrationAn Unknown Specimen

Bulb dimensions: 2.2 by 2.1cm

Sheath dimensions: 3.4 by 0.5cm

Leaves:Supervolute VernationDimensions at Flowering: 11 by 1.4cmSurfaces Concolorous; Medium Green in ColourSmooth Surface, with a Matt Finish

Inflorescence:Outer perianth Segment dimensions: 2.1 by 1.4cmInner Perianth Segments with both Apical and Basal Markings Inner Perianth Segments with an Apical Notch (Emarginate)Anthers with an Apiculum

Page 7: An Interactive Key to the Genus Galanthus L.. Genus containing 19 species, 22 principle taxa Numerous Additional Hybrids and Cultivars Listed under Appendix
Page 8: An Interactive Key to the Genus Galanthus L.. Genus containing 19 species, 22 principle taxa Numerous Additional Hybrids and Cultivars Listed under Appendix
Page 9: An Interactive Key to the Genus Galanthus L.. Genus containing 19 species, 22 principle taxa Numerous Additional Hybrids and Cultivars Listed under Appendix
Page 10: An Interactive Key to the Genus Galanthus L.. Genus containing 19 species, 22 principle taxa Numerous Additional Hybrids and Cultivars Listed under Appendix
Page 11: An Interactive Key to the Genus Galanthus L.. Genus containing 19 species, 22 principle taxa Numerous Additional Hybrids and Cultivars Listed under Appendix
Page 12: An Interactive Key to the Genus Galanthus L.. Genus containing 19 species, 22 principle taxa Numerous Additional Hybrids and Cultivars Listed under Appendix
Page 13: An Interactive Key to the Genus Galanthus L.. Genus containing 19 species, 22 principle taxa Numerous Additional Hybrids and Cultivars Listed under Appendix
Page 14: An Interactive Key to the Genus Galanthus L.. Genus containing 19 species, 22 principle taxa Numerous Additional Hybrids and Cultivars Listed under Appendix
Page 15: An Interactive Key to the Genus Galanthus L.. Genus containing 19 species, 22 principle taxa Numerous Additional Hybrids and Cultivars Listed under Appendix

Leaf Air Spaces

G. woronowiiG. ikariae subsp. ikariae(Davis & Barnett, 1996)

• G. woronowii, G. ikariae and G. platyphyllus all show supervolute vernation, broad green leaves and a single apical inner perianth marking• Clear differences evident in Leaf Air Spaces, although limited data set available• 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)

Page 16: An Interactive Key to the Genus Galanthus L.. Genus containing 19 species, 22 principle taxa Numerous Additional Hybrids and Cultivars Listed under Appendix

• Leaf Air Space data is not available for all species• All entities besides G. ikariae, G. krasnovii, G. platyphyllus and G. woronowii scored as “Not Scoped” for the Leaf Air Space feature• Feature remains hidden until only these species remain and the application of this characteristic is required• Notes included in species description to aid determination

Page 17: An Interactive Key to the Genus Galanthus L.. Genus containing 19 species, 22 principle taxa Numerous Additional Hybrids and Cultivars Listed under Appendix

Species Descriptions

G. ikariae

G. elwesii

Page 18: An Interactive Key to the Genus Galanthus L.. Genus containing 19 species, 22 principle taxa Numerous Additional Hybrids and Cultivars Listed under Appendix

Glossary

Page 19: An Interactive Key to the Genus Galanthus L.. Genus containing 19 species, 22 principle taxa Numerous Additional Hybrids and Cultivars Listed under Appendix

References• Bishop, M., Davis & A., Grimshaw, J. (2001) Snowdrops: A Monograph of Cultivated Galanthus The Griffin Press• Davis, A.P. (1999) The Genus Galanthus Timber Press, Inc.• 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

AcknowledgmentsMany thanks to P. Wilkin and A. Haigh for their Invaluable Assistance