72 87. Rhynchospora. 9. CYPERACEiE. Pl.end.ph. 
channelled, edge and ridge rough; sheaths short; ligula 0, 
or very short ; pikelets umbelled, axillary, or terminal, 2 or 
3-flowered ; hractece leaflike, longer than the spikelets. 
1. Rhynchospora alba. White beakrush . 
Culm rather acute-angled ; leaves very slender, channelled; 
spikelets fascicled ; root fibrous. 
Cyperus minor palustris hirsutus, paniculis albis paleaceis, Raii Syn. 
427,6. 
Gramen jnnceum leucanthemum, Ger, em. 30. 
Cyperella ^ 1. No. 1. Micheli JV. P. G. 53. 
Schoenus albus, Lin. S. P. 65. 
Schcenus setaceus, Thuil. FI. Par. 19. 
Rhynchospora alba, Vahl Enum. 2,236. 
Bogs; perennial; July and August. 
Culm fascicled, in tufts, 1 2 in. high ; leaves shorter than 
the culm, erect; sheath 3-sided, white; ligula very short; 
spikelet oblong, erect, white, turning brownish ; akenium 
compressed, acute, white ; stigmata shorter than the style. 
2. Rhynchospora fusca. Brown beakrush . 
Culm blunt-angled ; leaves bristlelike, channelled ; spike - 
lets fascicled ; root creeping. 
Cyperus minor angustifolia palustris capitulis fuscis paleaceis, Raii 
Syn. 427,6.* 
Cyperella ^ 1, No. 2, Micheli N. P. G. 53. 
Schoenus fuccus, Lin. S. P. 1664. 
Schoenus albus 8, Hudson FI. Ang. 16. 
Rhynchospora alba 8 , Vahl Enum. 2, 236. 
S hoenus setaceus, Thuil. FI. Paris, 19. 
Rhynchospora fusca, Rcemer Syst. Veg. 88. 
Turf bogs; perennial; August. 
Root hard, throwing up a single culm here and there; culm 
almost naked, slender; leaves very slender ; sheath round; 
ligula 0 ; spikelet 3 or 4-flowered, oblong, brown, acute ; 
akenium roundish, palebrown, shining ; stigmata longer 
than the style. 
VIII. 39. SCHCENUS. Theophrastus. Bogrush. 
Spathelle 1, imbricate, 3 or 6 outer small, crowded and 
empty, flowerbearing 3 or 4, alternate ; rachis flexuose ; 
glumelles bristlelike, bristles 3 to 6, smooth, shorter than 
the glumes ; stamens 3; style deciduous, not jointed; stig- 
mate 3 ; akenium 3-sided. — Root fibrous, perennial ; leaves 
all radical, tufted, bristlelike, ridged, planoconvex, shorter 
than the culm ; sheaths broad, slit lengthways, black, 
shining; ligula very short; culm round, not branched, apex 
thickened; head terminal, ovate; spikelets many; involu- 
crum 2-valved, valves unequal., 
