EXPLANATION OF PLATE. 



Kg. 3. 

 Kg. 3. 

 Kg. 4. 

 Kg. 5. 

 Kg. 6. 

 Kg. 7. 

 Fig. 8. 

 Kg. 9. 

 Kg. 10. 

 Kg. 11. 

 Fig. 12. 



Fig. 1. Label of Orchis undulatifolia. 

 Orchis Simia. 



Orchis macra, from Eng. Bot. 

 Orchis militaris. 

 Orchis galeata. 

 Orchis fusca. 



Orchis fasca, from Eng. Bot. 

 Orchis variegata. 

 Orchis tenoreana. 

 Orchis longibracteata. 

 Orchis iistulata. 

 Orchis ustulata, from Eng. Bot. 



Fig. 13. From a plant found at Albano, which I at one time proposed to call 

 Orchis puella, but, as I found only one specimen, not in a very good state, 

 and that has since been destroyed by insects, I have not ventured to introduce 

 it. In habit it resembled 0. ustulata, but was larger, and, except in the fonii 

 of the label, not at all allied to 0. globosa. 



Fig. 14. Label of Orchis globosa. 



Fig. 15. A cordate leaf : a, cordate-prolonged ; i, cordate-acuminate ; c, cordate- 

 acute ; d, (inner line) cordate-attenuate ; e, spatulato-cordate ; / indicates 

 the stalk of a simply cordate leaf. 



Fig. 16. A triangular leaf. Reduced to a a, it becomes deltoid ; iob b, rhombic. 



Fig. 17. A form terminating at each end in a mathematical right angle. 



l^ig. 18. Compressed seeds. 



Fig. 19. Obcompressed seeds. 



