TAB. I. 



Fig. 1. Anthoxanthum. — a. Flower, h. The same from which 



the calyx is removed, showing the outer awned corolla, c. 



The inner awnless corolla. 

 Fig. 2. Nardus. — a. Two-valved corolla, destitute of calyx. 



b. Pistil, with its single style. 

 Fig. 3. Alopecurus. — a. Flower with its two-valved calyx, b. 



Corolla of 1 valve with its awn. 

 Fig. 4. Phalakis. — a. Calyx, b. Corolla, with the 2 valves of 



other imperfect florets. 

 Fig. 5. Ammophila. — a. Flower, b. Corolla, with the tuft of 



hairs at the base. 

 Fig. 6. Phleum. — a. Calyx, b. Corolla. 



Fig. 7. Lagukus a. Calyx, b. Corolla. 



Fig. 8. Milium a. Floret, b. Corolla. 



Fiff. 9. Gastridium. — Calyx, swollen at the base. b. Corolla. 

 Fig. 10. Stipa. — a. Flower, with the very long twisted awn 



terminating the corolla, b. Calyx, c. Corolla: the long awn 



being cut away. 

 Fig. 11. PoLYPOGON. — a. Calyx, b. Corolla. 

 Fig. 12. Calamagrostis.— a. Flower, b. Corolla, surrounded 



by hairs at the base. 

 Fig. 13. Agrostis. — a. Calyx, b. Corolla. 

 Fig. 14. Catabrosa. — a. Spikelet. b. Corolla. 



Fig. 15. A IRA a. Spikelet. b. Corolla. 



Fig. 16. Mehca. — a. Spikelet. b. Two florets from the calyx, 



with the rudiment of a third floret between them. 

 Fig. 17. HoLCUS. — a. Calyx, b. Two florets from the calyx; 



the upper one with stamens only and awned ; the lower 



one perfect and awnless. 

 Fig. 18. Arrhenatherum. — a. Spikelet, with 2 florets, the 



lowest floret with stamens only, and a long twisted awn ; 



the upper (shown separately at b.) perfect, with a short 



straight awn. 

 Fig. 19. Hierochloe. — a. Calyx, b. The 3 florets, of which the 



two lateral ones have 3 perfect stamens and pistil only ; 



the middle one perfect, diandrous. 

 Fig. 20. Sesleria. — a. Spikelet. b. Corolla. 

 Fig. 21. Panicum. — a. Unequal calyx with the neutral floret. 



b. fertile florets. 

 Fig. 22. Setaria. — a. Bristly involucre with the spikelets. b. 



Unequal calyx, with the neutral floret, c. Perfect floret. 

 Fig. 23. PoA.— a. Spikelet. b. Floret. 

 Fig. 24. Triodia.— a. Spikelet. b. Corolla. 



H 



