PL end. ph. 9. CYPERACE/E. 37. Chaetospora. 71 
VI. 37. CHiETOSPORA. R. Brown. Marshrush . 
Spathelle 1, imbricate, 1 or 2 outer smaller, empty; 
glumelles setaceous; setce 6, shorter than the glumes; sta- 
mens 2 or 3 ; style deciduous, not jointed; stigmata 2, re- 
volute; akenium lenticular, 3-sided. — Root creeping; culm 
roundish, base leafy; leaves flat, or half-round, channelled, 
edge smooth, ridge 0; ligula short; spike terminal, upright, 
2-rowed, compressed, compound; spikelet alternate, sessile, 
2 or many-flowered ; rachis flexuose. 
1. Chce torpor a compressa. Compressed marshrush, 
Culm roundish ; leaves flat ; bractece leaiiike, acute, longer 
than the spike; spikelets inanyflowered. 
Gramen cyperoides spica smiplies compressa disticba, Rail Syn. 425 $ 
spic. 14. 
Cyperella, $ 2, Micheli N. P. G. 53. 
Carex uliginosa, Lin. S. P. 05. 
Scirpus caricis, Retz PrGd. 64. 
Scirpus coinpressus, Persoon Syn. 1, 66. 
Scirpus caricinus, Schrad. Germ. 1, 132. 
Turfy bogs; perennial; July. 
Root shootbearing; culm rather 3-sided, 9 in. high, up- 
right; leaves not channelled, smooth; ligula truncate; spike 
brown, shining; lower bractece 3, slender, leaflike; upper 
ovate, scariose, mucronate; spikelets 6 to 12, the lower 
sometimes branched. 
2. Chcetospora rufa . Red marshrush , 
Culm round; leaves half-round, channelled; bractece 
leaflike, obtuse, shorter than the spike ; spikelet fewflowered. 
Sclicenus rufus, Hudson FI. Ang. 15. 
Schoenus brunnesis, Solanders MSS. 
Schceui compressi varietas, Light/. FI. Scot. 1138. 
Scirpus rufus, Wahl. Lapp. 15. 
Bogs; perennial; July. 
Root horizontal; culm 6 in. high ; leaves dilated at bot- 
tom, membranous, sheathing, full as long as the culm ; spike 
brown, shining ; spikelets 5 or 6, branched ; bractece some- 
times wanting. 
VII. 38. RHYNCHOSPORA. Vahl. Beakrush. 
Spathelle 1, imbricate, lower smaller and empty; glu- 
melles setaceous, setae 8 or 10, denticulate, shorter than the 
glumes; stamens 2 or 3 ; style subulate, dilated at the bot- 
tom, persisting; stigmata 2 or 3; akenium, bony, lenticular, 
conical, beaked. — Root perennial, fibrous, or creeping ; 
culm slender, triangular, base slightly tumid ; leaves linear, 
