356 96. CYPERACES. 
smooth ascending, beak slightly rough at the edges, nut ovate- 
oblong compressed its beak extremely short, gl. mucronate shorter 
than the fruit, st. smooth with rough angles above, bracts short 
setaceous.— FE. B. 629. Schk. Dd. and Ww. 89. H.a.16. R. 220. 
—Height 1—2 feet. St. lax, slender, flaccid. Spikelets grayish, 
usually distant, 1 or 2 lowest often lengthened into a short branch. 
Fr. with a thick green margin slightly rough near the summit.— 
Moist shady places. P. VI. 
tt Brownish. Panicled. Fr. ascending, gibbous on its back. 
13. C. teretiuscula (Good.) ; spike compound oblong, spikelets 
densely aggregated, fr. ovate with 2—5 central nerves on the con- 
vex side, beak bidentate serrulate subtriquetrous strongly winged 
on the convex side, nut turbimate convex on both sides, beak ex- 
tremely short, style not thickened at the base, st. trigonous and 
scabrous above with convex faces —E.B. 1065. Schk. D. 19.2. 69. 
H.a.9. R. 222.—Root forming scattered simple tufts. St. 
Boggy meadows, rare. §. near Manchester. P. VI. 
14. C. paradoxa (Willd.); spikes narrowly panicled lower 
branches rather distant, fr. ovate with numerous short elevated 
ribs near its base, beak bidentate serrulate with no wing on its 
convex side, nut rhomboidal constricted below convex on both 
sides with a short beak, style slightly enlarged at the base, st. 
trigonous and scabrous in the upper part with convex faces.— 
EE. B. 8. 2896. Schk. EB. 21. H.a. 12. R.222.—Root densely 
tufted, crowned with the fibrous remains of decayed leaves. St. 
1—2 feet high, slender.—Bogs. Ladiston, Mullingar, Ireland. 
Ascham bog and Heslington field, York. P. VI. VII. E, I, 
15. C. paniculata (L.); spikes panicled with elongate diver- 
ging branches, fr. ovate many-nerved with a bifid frmged subtri- 
gonous beak, nut ovate obtuse narrowed below compressed-trique- 
trous, beak slightly thickened upwards, st. triquetrous with flat 
faces —E. B. 1064. Schk. D. 20. Ttt. 163. H.a.19. R. 223, 
—Root forming dense elevated tufts. St. stout, 2—3 feet high. 
Panicle usually large and spreading or reduced to a slender com- 
pound (or even simple) spike. Bracts all much shorter than the 
spike —Bogs. P. VI. 
** Snikelets sterile at their base (or at both ends). 
+ Cespitose. Spikes and 1. glaucous. 
16. C. Boenninghauseniana (Weihe); spikelets several upper 
ones simple crowded lower distant composed of aliernate spicule, 
