STUCKERT: GRAMINÁCEAS ARGENTINAS. 151 
321. Poa glomerifera HackEL nov. spec. 
Stuckert, Herb. arg. n* 17,744 ex Lillo Herb. tuc. n* 5,622 (1. 11. 
1907). Terreno pedregoso, Cumbres Calchaquies, Dep. Tafi, Prov. 
Tucumán á 4,250 metros de altitud. 
Perennis robusta, circ. 40 cm. alta. 
Culmus erectus, subcompressus, scaber, ad apicem usque foliatus, 
3-NOdiSs. 
Vaginae in basi culmi dense aggregatae, inferiores valde dilata- 
tae, laxae, compressae, innovationum complanato-complicatae, 
in statu complicato circ. 1 em. latae, flabellato-subdistantes, 
scaberulae, infimae marcescentes fuscescentes. 
Ligula late ovata, obtusa circ. 9 mm. long., dentata. 
Laminae late lineares, sensim acutatae, acutissimae, planae, 
inferiores ad 30 cm. long., S mm. lat., rigidae, glauco-virides, 
utrinque marginibusque scabrae vel superius scaberrimae, 
tenuinertes. 
Panicula ovata, patens circ. 12 em. long., rhachi ramisque sca- 
berrimis, his binis elongatis, in?/3 inferiore indivisis, superius 
ramos secundarios a basi densissime multispiculatos glomeri- 
formis gignentibus, glomeris ovatis circ. 1 cm. longis sibi ita 
arcte approximatis ut omnes in glomerum communem obovato- 
oblongum cire. 3 cm. longum lobatum paniculae ramum ter- 
mainantem confluant. 
Spiculae in glomeris densissime imbricatae, subsessiles e. brevis- 
sime pedicellatae, ovatae, 5-flores, floribus hermaphroditis, 7 
mm. long., virides et dilute aureo-violaceoque variegatae. 
Glumae steriles subaequales, 5,5-6 mm. long., fertiles fere usque 
ad apicem tegentes. 
[. anguste lanceolata, setaceo- acuminata, 1-nervis. 
IT. late lanceolata, acuta, 3-nervis, utraque carina spinulosa, 
ceterum scubra. 
Glumae fertiles late lanceolatae breviter acuminatae, 6 mm. 
long., callo pilis crispis vix dimidiam glumam aequantibus 
parce barbata ceterum glabra, undique scabra, carina scabe- 
rrima, S-nervis, nervis lateralibus brevibus, parum conspicuáis. 
Patea gluma conspicue brevior lineari-oblonga, obtusa obsolete 
bidentula, carinis spinulosa. 
Antherae 3 mm. long; ovarium glabrum. 
