29 
Culmus tripedalis, simplex, ‚glaber, nodis di- 
stantibns; folia linearia, 2 — 3 lineas lata, utrin- 
que glabra; vaginae glabrae, arctae, internodiis lon- 
giores, parum inflatae, ‚panicnlis inclusis abortivis, 
margine pilosae, ad oras dense barbatae; ligulae 
margo barbalus; panieula ampla, pyramidata, su- 
perne vaginam erumpens, basi in illa inelusa; rami 
diffusi, plerumque alterni, fere simplices, basi bar- 
baii, parum incrassati; fores dense racemosi, pur- 
purei; calyx biflorus glaber; gluma inferior vix 
tertiam ‚partem superioris aeguans, acuminata, su- 
perior lineari-lanceolata, acuta, uninervis. Corol- 
la bivalvis, subaequalis, glumam superiorem subae- 
quans, vix scabra, valvulae uninerves,— Am Ua- 
nadian :Flufs. 0 
5) Agrostis airoides Torr.; ‚panienla pyra- 
midata: ramis ‚patentibus plerumgue binis, in axil- 
lis nudis; flores solitarüi, muliei, glumae inaeguales, 
plerunque corolla subaequali breviores, vaginae ad 
oras barbatae. — Radix perennis; culmus 2 — 3 
pedalis, basi aliquot ramis brevibus ; Tolia linearia 
2— 3 lineas lata, utrinque glabras vaginae glabrae, 
ad oras parum barbatae: lignlae margo obsoletus; 
panicula ampla, pyramidalis, basi libera: rami infe- 
riores bini vel terni, superiores alterni; flores omnes 
distincte pedicellati, purpurei, oblongi; calyx biglu- 
mis: glamae inaegquales, plerumgue corolla brevio- 
res, inferior lanceolata acuta, superior oblonga sub- 
obtusa, uninervis, glabra; corolla bivalvis, glabra, 
mutica; valvulae subaequalesätutae. Anden Verzwei- 
gungen des Arkansaa in der Nähe der Rocky Berge. 
