82 44. Eriophorum. 9. CYPERACEaE. Pl. end.ph . 
Root creeping, scaly; culms slender, smooth, a foot high, 
round, 3-sided above; leaves long, slender, acutely keeled, 
edge smooth ; panicle 4 to 8-spiked ; bract ece leaflike, un- 
equal ; spike sometimes dioicous or polygamous. 
0. Alpinum. Panicle 2 or 3-spiked. 
5. Eriophorum gracile. Slender cotton grass. 
Calami 3-sided ; leaves filiform, 3-sided, channelled ; 
spike erect, peduncled, overtopping the bractege; peduncles 
rough. 
Eriophorum triquetrum, Hoppe Dot. Tasch. 1800, 108. 
Eriophorum gracile, Roth Catnl. II. Appendix. 
Linagrostis paniculata jS, La March FI. Fr. 3, 555. 
Bogs; perennial; April 
Roots creeping; culms slender, 18 in. high; leaves chan- 
nelled at bottom ; lower sheaths brown ; spikelets 3 or 4, 
oblong, fruitbearing, drooping; peduncles unequal. 
V. 10. GRAMINEtE. 
Flower hermaphrodite, or unisexual, glumaceous; glumes 
1, 2, or manyflowered, or 2-rowed on a common rach is ; 
spathelles 2 or none; glumelle of 1 or 2 spathellules; spat bel- 
ittles dissimilar; outer mostly carinate, 1 or many-ribbed, 
awnless, bristled, or awned; lower mostly 2-ribbed, awnless, 
rarely 2-awned, sometimes more ; lodicule 1 or 2, hypogy- 
nous, small, inserted mostly side by side between the ex- 
ternal spathellule, and the stamens, rarely opposite, alter- 
nating with the valves, or wanting; stamens 3, hypogynous, 
rarely 1 or 2; anthers 2-celled, 2 forked; ovary 1, free, 
1 -seeded; style 2 or 3 ; stigmata feathered, hispid, or as- 
pergilliform ; cariopsis membranaceous; corculnm small, ba- 
sillary; perisperm farinaceous. — - Herb annual or perennial; 
root fibrous; culm cylindrical, fistulous, jointed, mostly 
simple; leaves alternate, 1 at each joint, sheathing; sheath 
divided lengthways; flowers small, panicled or spiked. 
1. Locustce all alike ; flowrets enclosed in the same 
receptacle . Monothaiama. 
A. Axis not jointed ; glumes inserted alternately. 
a. Glumes l-flowered ; lon er spalhelle largest. 
Spathellule 1, awned; axis spiked; 
spike not involucrated .... Alopecurus. 85. 
Spathellule 1, awned; axis panicled; 
spathellule nicked at the apex 
% 
Agraulus. 91. 
