Plate 46 



GRASSES 



Clusters and spikelets, the latter x3 except where indicated. 

 GRAMA GRASS TRIBE 



1. Bulbilis dactyloides: Buffalo Grass; 1. staminate branch; a. pistillate 



branch ; b. staminate flower x3. 



2. Bouteloua oligostachya : Grama Grass ; spikes ; spikelet 



3. Bouteloua curtipendula; spikes; spikelet x2 



4. Spartina cynosuroides ; Cord Grass, Slough Grass 



5. Beckmannia eruciformis 



6. Schedonnardus paniculatus ; spikes ; spikelets 



OAT TRIBE 



7. Danthonia Parryi : Oat Grass 



8. Avena striata : Oat 



9. Graphephorum muticum : cluster ; spikelet x2 



10. Deschampsia caespitosa: Hair Grass; cluster; spikelet 



11. Trisetum subspicatum : False Oat; spike; spikelet 



REDTOP TRIBE 



12. Calamagrostis purpurascens : Reed Grass 



13. Agrostis hiemalis : Hair Grass; cluster; spikelet 



14. Sporobolus tricholepis ; cluster; spikelet 



15. Stipa comata: Spear Grass 



16. Stipa viridula 



17. Aristida purpurea: Wire Grass 



18. Alopecurus geniculatus : Foxtail 



19. Oryzopsis micrantha : Mountain Rice 



20. Eriocoma cuspidata: Indian Millet 



21. Muhlenbergia gracilis 



22. Muhlenbergia gracillima 



23. Phleum alpinum : Timothy 



BARLEY TRIBE 



24. Elymus sitanion 



25. Hordeum jubatum : Squirreltail Grass 



26. Agropyrum caninum: Wheat Grass, Quack Grass; spike; spikelet xl^2 



27. Agropyrum spicatum: spike; spikelet xl)4 



CANARY-GRASS TRIBE 



28. Hierochloe odorata: Holy Grass 



29. Phalaris arundinacea : Canary Grass 



PANIC-GRASS TRIBE 



30. Panicum capillare : Panic Grass ; cluster ; spikelet 



31. Digitaria sanguinalis: Finger Grass 



HILARIA TRIBE 



32. Hilaria Jamesii: Black Bunch Grass 



BLUESTEM TRIBE 



33. Chrysopogon nutans : Golden Beard 



34. Andropogon scoparius : Bluestem, Bunch Grass 



35 . Andropogon furcatus : pair of spikelets 



