506 THE GRASS FAMILY. 
left undisturbed. A general sketch, however, of the proposed arrangement 
as affecting British genera is now added, observing at the same time that 
here and there an exceptional species may not be in strict conformity with 
the tribal character ; but fewer, it is believed, than in the case of any other 
method hitherto proposed. 
* Pedicel articulate below the outer glumes. Spikelet with 1 terminal fertile flower, the 
male or barren flower (if any) or empty glumes below it. (PANICACEZR.) 
1. Panicex. Flowering glume of a firmer texture than the empty ones below 
it:—3, PANICUM. ° 
2. ANDROPOGONES. Flowering glume much thinner and smaller than the empty 
one below it, and often bearing a twisted awn :—-12. PoLyPoGon. 
The above two tribes, so sparingly represented in Britain, comprise a very large 
proportion of tropical GRAMINER, 
** Articulation, when present, under the flowering glumes, but above the two outer ones, 
Spikelets with one or more flowers and frequently a male flower or empty glume 
above them, the male flower rarely below them, (POACER.) 
3. PHALARIDES. Glumes normally 6, 2 below the articulation, 2 immediately 
above it, usually small and empty or with a male flower in each, 2 upper neariy 
equal, enclosing a single perfect flower. No true palea (the lower glumes oc- 
casionally deficient) :—1l. LrEersi1a; 9. ALOPECURUS; 6. PHALARIS; 7. DIGRAPHIS; 
5. ANTHOXANTHUM; 4. HIEROCHLOE. 
4, STREPTATHERH. Spikelets with 1, 2, orrarely more perfect flowers. Flowering 
glume bearing usually a bent or twisted often dorsal awn; palea 2-nerved, usually 
thin or small. Subtribe Agrostidee: Spikelet 1-flowered, fruiting glume and small 
palea usually very thin :—10. CHaMagrosTIs; 13. AGrostis ; 14. Gastripium; 11. 
Laeurus; 16. CanaAmMaGrostis; 15. Psamma. Subtribe Avenace : Spikelet 2- or few- 
flowered, rarely 4-flowered, fruiting glume and palea more developed and firmer 
than in Agrostidee. 8. PHLEUM; 20. Houcus; 17. Arra; 18. AvENA; 19. ARBRHE- 
NATHERUMs , 
5, AstrEPTH. Spikelets with several, more rarely 1 or 2, perfect flowers. 
Flowering glumes unawned or terminating in straight awns; palea prominently 2- 
nerved or 2-keeled, usually as long or nearly as long as the glume. Subtribe 
Miliee: Spikelets paniculate, 1- or 2-flowered, the rachis not produced beyond the 
flower :—2. Mitium. Subtribe Chloridee: Spikelets 1- or several-flowered, sessile 
along the simple branches of the panicle :—21. Cynopon; 22. Spartina. Subtribe 
Hordeinee: Spikelets 1- or several-flowered, sessile in the notches of a simple 
spike :—23. Leprurus; 24. Narpwus; 25. Etymus; 26. HorpEUM; 27. AGROPYRUM ; 
28. Lotium; 29. BracHyPpopiuM. Subtribe Festucee: Spikelets several-flowered, 
pedicellate :—30. Bromus; 31. Festuca; 32. Dacryuis; 33. CyNnosurus ; 34. Briza; 
35. Poa; 36. CaTaBRosa ; 37. Moninia; 38. Mextica; 39. Triopia; 40. K@uErza; 
41. SESLERIA; 42. ARUNDO., | . | 
Among the exotic genera occasionally cultivated in-our fields or gardens 
may be mentioned Rye (Secale cereale), the Maize or Indian Corn (Zea 
Mays), and the Feather-grass (Stipa pennata). ‘The latter plant, a native 
of southern Europe, has by some mistake been inserted in some British 
Floras as having been found in Westmoreland. 
1. LEERSIA. LEERSIA. 
Spikelets loosely panicled, 1-flowered, flat, consisting of only 2 glumes, 
both of them keeled, without any inner 2-nerved palea. Stamens in the 
British species 3, in most exotic ones 6, 2, or 1. . } 
A small genus, chiefly American, with 2 or 3 of the species spread over 
the warmer regions of the old world and Australia. This genus appears 
to be a Phalaridea reduced to the terminal pair of glumes. In the ad- 
Joiing genus Oryza (the cultivated Rice) the intermediate small empty 
DHE is present, in both the outer empty pair below the articulation is 
eficient. . 
