979 
12 uncias longo, strieto rigido ae validulo trigono v. trian- 
sulari plerumque leviter compresso basin versus leviter tube- 
roso-incrassato ibique plurifoliato; foliis reigedes erecto- 
patulis eulmum subaequantibus acuminatis planis carinulatis 
vix supra lineam latis, marginibus remote dentieulatis; invo- 
 ]uero 4 — 3-phyllo, folio infimo stricte erecto umbella lon-. 
giore, reliquis patentibus eam subaequantibus; umbella com- 
posita v. simplie? (raro semidecomposita) 4 — 7 -radiata; ra- 
diis erecto- patulis 2 — '/, poll. long. setaceis; spiculis 3 — 
ö-nis umbellato - fascieulatis lineari - lanceolatis v. (minoribus) 
ovato-oblongis, swpra lineam latis, acutis v. obtusis satis 
compressis 8 — 32-floris; squamis dense imbricatis /a£o- 
ovatis obtusis apice subreeurvato- patulis, e carina viridi 
mucronalis obsoletiss. nervatis subbisulcatis, lateribus mem- 
branaceis rufescentibus v. fusco purpureis, nitidulis; caryopsi 
(non perfecte matura) squama 4 — 5-plo breviore obovata, 
versus basin parum attenuata, apice obtusa vix apiculata, 
iriquetra albida; stylo elongato pertenui usque ad medium 
diviso; stam. 3 v. 2. —— Spiculae saepe viviparae. 
C. dentatus Torr. l. e. 271. — Kunth I. c, 34. — C. 
parvijiorus Mühlenb. I. e. 19. — GC. vérens Willd. herb. 
no. 1383. 
America boreal. 
167. €. assimilis Steud. 
Lutescens; culmis erectis 9 — 2 poll. long. compressis, 
longioribus infirmis, versus basin 1 — 2-foliatis; foliis culmo 
longioribus 1 — 1!/, lin. lat. planis marginibus superne spi- 
nuloso -scabris; foliis floralibus 3 — 4 erectiusculis quam um- 
bella corymbosa composita duplo triplove longioribus ; umbel- 
lae ramis brevibus divergentibus v. reflexis ochreatis bracteo- 
latısque; spiculis in apice ramorum capitato-confertis, brevibus, 
37 * 
