TLend.ph. 9. CYPERACEiE. 37. Chatospora. 71 



VI. .37. CH^TOSPORA. K. Brown. Marshrush, 



Spathelle 1, imbricate, 1 or 2 outer smaller, empty; 

 glitmelles setaceous; set<s 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 ; Ugida short ; spike terminal, upright, 

 2-rowed, compressed, compound; spikelet alternate, sessile, 

 2 or many-flowered ; rachis flexuose. 



1. Chceto'ipora compressa. Compressed marshrush. 

 Cuhn roundish ; leaves flat ; Iractece leaflike, acute, longer 



than the spike; spikelets manyflowered. 



Gramen cyperoides spic.a simplici compressa disticha, iJaii Si/n. 425 ; 

 spic. 14. 



Cyperella, § S, Micheli N. P. G. 53. 

 Carex uliginosa, Lin, S. P. 65. 

 Scirpiis caricis, Retz Prod. 64. 

 Scirpus coinpressus, Persoon Syn. 1, 66. 

 Scirpus caricinuE, Schrad, Germ. 1, 132. 



Turfy bogs ; perennial ; July. 



Root shootbearing ; cuhn rather 3-sided, 9 in. high, up- 

 right; leaves not channelled, smooth; ligula truncate; spike 

 brown, shining; lower Iractece 3, slender, leaflike; upper 

 ovate, scariose, mucronate; spikelets 6 to 12, the lower 

 sometimes branched. 



2. ChcBiospora riifa. Red marshrush. 

 Culm round; leaves half-round, channelled; LractecB 



leaflike, obtuse, shorter than the spike ; spikelet fewflowered. 



Schoeuus rufus, Hudson Fl, Ang. 15. 



Schoenus brunnesis, Solander''s MSS. 



Scboeni compressi varieias, Light/. Fl. Scot. 1138. 



Scirpus rufus, Walil. 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 ; akcninm bony, lenticular, 

 conical, beaked. — Root perennial, fibrous, or creeping ; 

 culm slender, triangular, base slightly tumid ; leaves linear, 



