244 MONOCOTYLEDONEJE. ISCHEMUM. 
anguste sulcata, in depressione translucente ; gluma II“ in aristam 
ipsam 2—3-plo longiorem abeunte. 
Cwspitosum, innovationibus extravaginalibus. Culmi erecti, su- 
perne plus minus nudi, ibique angulati et scaberuli v. puberuli. 
Folia glauca; vaginz teretes, arctæ, elevato-costat@, glabr& v. 
superne subhirsutze, scabr& v. leviuscule, internodiis breviores, 
summa cum lamina setacea. Ligula in seriem pilorum sericeorum 
soluta. Laminse e basi subangustata a vagina parum distincta lineares, 
longissime setaceo-acuminat&, rigid®, undique plus minus scabræ v. 
raro margine læviusculæ, costa media 1-nervi reliquis vix crassiore 
notatz, nervis lateralibus primariis utrinque 2—3, utrinque promi- 
nentibus, secundariis ternis tertianisque singulis subtus prominulis. 
Racemus subrobustus erectus v. subcurvatus, plus minus pilosus; 
articuli pedicellique spicula '/,—duplo breviores, erassiuseuli, lineari- 
cuneati, compressi, angulos 2 exhibentes, villis argenteo-sericeis patulis 
accrescentibus, summis articulo paullo brevioribus v. zequilongis 
dense ciliati, oblique disjungentes. Spiculz sessiles lineari-oblong®, 
acuminatz, pallide virentes, callo exeavato circ. 1 mm. lato basi et 
lateribus breviter barbato; gluma I= inferne herbaceo-chartacea, 
superne membranacea, apice subobliquo inzequaliter acuteque bifida, 
laciniis cuspidatis (facillime rumpentibus hine sepe prstervisis !), 
marginibus anguste implieatis, carinis scabris, altera sepius anguste 
alata, costis scabris marginibus per triades approximatis, interioribus 
inferne curvatis superne anastomosantibus, extimis in euspides exeur- 
rentibus notata, inter costas intimas depressione translucida inferne 
angusta superne dilatata munita. Gluma II® quam I»: paullo brevior, 
elliptica, acuta, inter apicis dentes brevissimos aristam graeilem patu- 
lam exserens, dorso carinata, carina apice anguste alata, scabra, 
ceterum 3-nervis, margine ciliata; III primá paullo brevior, lineari- 
lanceolata, acuta, enervis, hyalina, marginibus implicatis ciliata, palea 
ei similis, glabra, 2-nervis; floris Z anthere 2,5 mm. longs;e. Gluma 
IV* secundá duplo brevior, ovali-oblonga, ad '/, fissa, basi trinervis, 
ciliata ; arista 3—7 em. longa, gracilis, columnä rectiusculá v. leviter 
flexuosá fuseá v. brunnescente ad spiras plus minus (raro subobsolete) 
eiliatä subulam flavidam subzequante. Palea glumam IV» »quans, 
lineari-lanceolata, aeuta, bidentulata, hyalina, binervis, ciliata. Floris 
3 antherz 3,5 mm. long. Stigmata lineari-oblonga, stylos :equantia, 
albida. Spieule pedicellat® lanceolat®, acuminatæ, virides v. leviter 
violaceo-suffusie, callo brevi, glabro ; gluma I™ bicuspidata, ad mar- - 
gines implieatos longe ciliata, carinis marginata, przeter nervos cari- 
t 
