| 11. | The underside of the leaf is dull, sometimes glaucous.
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| 12. | Seeds average 100-125 per cone, not at all glaucous.
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| 13. | Fronds are mostly hairless and often glaucous beneath the frond.
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| 14. | A good feature for identification is the glaucous under-leaf colour.
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| 15. | The leaves are a mid to dark green, but not glaucous.
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| 16. | The forewings are pale glaucous with an opalescent blue gloss.
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| 17. | The hindwings are pale glaucous with an opalescent blue gloss.
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| 18. | The forewings are pale glaucous brown, faintly irrorated with darker brown.
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| 19. | The hindwings are pale glaucous grey with a semihyaline white basal area.
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| 20. | It has glaucous, sage-green, or green grey leaves.
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