jdviii 
TABLE OF GENERA. 
* Glumes imbricated. 
3. Cladium. Glumes 5 or G. Bristles none. Nut crowned with the conical base 
of the stylo. 
4. Riiynciiospora. Glumes 5 or G. Bristles several. Nut crowned with the dilated 
base of the style. 
5. Eleociiaris. Spikelets solitary, terminal. Bristles 4-12. Base of style persistent. 
6. Eleogiton. Spikelets solitary, terminal. Bristles none. Style deciduous. 
7. Scirpus. Spikelets in umbels. Bristles about 6. 
8. Eriophorum. Bristles silky, very long when in seed. 
9. Elyna. Flowers monoecious, in aggregated spikelets. 
10. Carex. Flowers monoecious, in imbricated spikes. 
Order CYI. GRAMINE2E. 
1. Anthozakthum. Panicle spike-like. Glumes unequal, containing 3 florets; 
the middle one perfect, with 2 stamens, the outer imperfect. 
2. Nardus. Flowers in one-sided spikes. Glumes wanting. Pale* 2, the outer 
one with a long point. Style 1. 
3. Alopecurus. Flowers in cylindrical spikes. Glumes 2, 1-flowered. Palea 1, 
awned at the base. 
4. Piialaris. Flowers panicled, or in ovate spikes. Glumes 2, 1-flowered, keeled, 
longer than the pale*. Pale* 4, the inner pair investing the seed. 
5. Ammopiiila. Panicle spike-like. Glumes 2, keeled. Pale* 2, with hairs at the 
base, one awned. 
6. Pjileum. Flowers in cylindrical spikes. Glumes 2, equal, sharp, 1-flowered. 
Pale* 2, awnless, within the glumes, loosely coating the seed. 
7. Lagurus. Flower in an ovate hairy spike. Glumes 2, 1-flowered, fringed. 
Pale* 2; outer one with an awn and 2 bristles. 
8. Milium. Panicle loose. Glumes 2, pointed, longer than the floret. Pale* 2, 
awnless, coating the seed. 
9. Gastridium. Panicle contracted. Glumes 2, acute, swollen at the base, longer 
than the floret. Pale* 2, investing the seed; outer one awned. 
10. Stipa. Panicle erect. Outer palea with a very long feather-like awn, coating 
the seed. 
11. Polypogon. Glumes 2, notched at the end, with a long straight awn. Pale* 
unequal; outer one awned. 
12. Calamagrostis. Panicle loose, spreading. Glumes 2, unequal, acute, 1-flowered. 
Pale* surrounded by long silky hairs. 
13. Agrostis. Panicle more or less spreading. Glumes 2, unequal, 1-flowered. 
Pale* 2, unequal, membranous. Seed free. 
14. Catabrosa. Panicle spreading. Glumes 2, obtuse, 2-3-flowered. Pale® 
truncated, awnless. Seed free. 
15. Aira. Flowers panicled. Glumes 2, pointed, with 2 perfect florets. Pale* 
membranous; outer one awned at the base. Seed free. 
1G. Melica. Flowers panicled. Glumes 2, with 2 perfect florets, and 1 or 2 ru¬ 
dimentary ones between. Pale* coating the seed. 
17. IIolccs. Panicle lax. Glumes 2, 2-flowered; upper floret imperfect, awned; 
lower perfect, awnless. Seed coated by the pale®. 
18. Arriiknatiierum. Panicle lax. Glumes 2, 2-flowered; upper floret perfect, 
with a short bristle; lower imperfect, with a long awn. Seed coated by tlio 
pale*. 
19. Uierociiloe. Flowers panicled. Glumes 2, 3-flowered; the inner floret with 
2 stamens ; the outer ones barren, with 3 stamens. 
20. Kcei.eria. Panicles spike-like. Glumes 2, longer than the florets, unequal. 
Pale* awnless. (Otherwise as Aira.) 
21. Sesleria. Panicle ovate, spike-like. Glumes 3-flowered, pointed. Pale® 2, 
the outer pointed, the inner cloven. Styles united. Seed free. 
