compressis, Zaevibus sulcato-striatis inferne plurifoliatis; 
foliis pallide viridibus patentibus firmis cu/mo plerumque 
brevioribus . perangustis (1 —?/; lin. lat.) longe acumi- 
natis planis v. complicatis margine subtiliss. serratis; 
apiea subeylindrica simplici subinterrupta e spiculis 3—4 
—5 composita, 7—9, raro ad 12 lin. longa, 2—21/, lin. 
lata; bractea infima v. binis infimis foliaceis setaceis sca- 
bridis; spiculis saepiss. approzimatis v. parvum remotis par- 
vis paucifloris apice masenlis, subrotundo-ovatis; squamis 
scariosis stramineo-ferruginescentibus ovazo-lunceolutis acu- 
tis v. mucronulatis;, utrieulis tardius patentissimis, infimis 
subretroflexis, sguama parum longioribus 11/, kin. cire. long. 
flavo-virentibus membranaceis basi spongiosis hie nervatis, 
plano-convexis, v. oblongis basi subtruncatis longiuseule 
angusteque rostratis, vo. late ovutis brevi-rostratis, ore ucute 
bidenticulatis, angustissime marginatis luevibus ; caryopsi 
late ovata sursum aftenuata compressa hinc plana hine 
conveziuscula, infima basi confracta, styli basi eoniea ter- 
minata, evidenter punclutu favida; stigmatibus subelonga- 
tis reflexis subtilibus. 
©. retroflexa Mühlb. 219. — Schk. f. 140. — Boott, 
81. t. 126. — Sartwell, no. 26. — . 
Texas, Rio Brazas (Drammond). 
73. €. Mühlenbergiil Schk. 
Rhizomate elougato repente lignoso nodoso pennam 
auserinam tenuem crasso fusco, fibrillis validis rigidis; eul- 
mis pluribus faseiculatis strietis inaequalibus 1/,—1!/, ped. 
alt. tennibus triangulis, angulis obtusiusculis superne sea- 
bris, lateribus striatis, basin versus plurifoliatis; foliis herba- 
ceo-rigidulis eulmo brevioribus v. subaegnilongis Tatinsenlis. 
