T\VJ::.\Ty-,Sj:\EATH AXXUAL MEETING. 147 



DESCRIPTION OF PLATES. 

 Fig. 1. Panicum virgatum x 8. 



2. Panicum proliferum x 8. Two views. 



3. Panicum scoparium x 8. Two views. 



4. Panicum obtusum x 8. Tiiree views. 



5. Panicum lineare x 8. Two views. 



6. Panicum sanguinale x 8. Two views. 



7. Panicum depauperatum x 8. Two views. 



8. Panicum dicbotomum x 8. Two views. 



9. Panicum crus-galli x 8. Two views, with base of awn. 



10. Panicum clandestinum x 8. Two views. 



11. Panicum waltlieri x 8. Two views. 



12. Panicum autumnale (var. pubiflorum) x 8. Two views. 



13. Panicum capillare x 8. Two views. 



14. Eriocliloa punctata x 8. 



15. Sporobolus texanus x 8. 



16. Sporobolus asper x 8. 



17. Sporobolus minor x S. 



18. Sporobolus pilosus x 8. Type specimen kindly loaned by Mr. Coville. 



19. Sporobolus depauperatus x 8. Spikelet and glumes. 



20. Sporobolus cryptandrus x 8. Two specimens. 



21. Sporobolus asperifolius x 8. 



22. Sporobolus brevifolius x 8. Two specimens. 



23. Sporobolus arioides x 8. 



24. Sporobolus vaginaeflorus x 8. 



25. Aristida fasciculata (purpurea) x 2. 



26. Aristida oligantha x 2. 



27. Aristida humboldtiana x 2, 



28. Aristida basiramea x 2. Spikelet and callus. 



29. Aristida dispersa x 2. 



30. Aristida purpurascens x 2. 



31. Muhlenbergia sylvatica x 8. Spikelet and flowering glume. 



32. Muhlenbergia gracillima x 8. 



33. Muhlenbergia sobolifera x 8. 



34. Muhlenbergia mexicana x 8. 

 35._ Muhlenbergia minutiflorum x 8. 



36. Muhlenbergia racemosa x 8. Spikelet and flowering glume. 



