PLANTAE NOVAE NüNNULLAE 433 



formibus, subulatis, glabris. Fertilibuscum pedicello articulatis, 

 ovatis, 3-floris; gluma infera nulla, supera mnjuscula, ápice 

 subulifera, membranácea, 5-nervia, glabra; flore inlimo neutro, 

 magno, 1-palaceo, ovalo, concavo, coriacello, dorso seriebus 

 pluribus glochidiorum ármalo; flore secundo v. medio, neutro, 

 bipaleaceo, palea infera reláxala, mnjuscula, margine undulata, 

 scabra, coraciuscula, superiorem subulalo-involutam dimidio 

 minorem insolvente; flore supremo fertili celeris minore, ovalo- 

 lanceolalo, ex uno latere compresso, bipalaceo, glaberrimo lae- 

 vissimo, nilonle, pallescente v, viridi, cariopsidem elongalam, 

 glabram pallescentem arete includente. 

 Hab. In sylvis virgineis umbrosis secus flumen u Piray-guazúy> 

 vocatum, in provincia argentina iOIissiones», Maj. 1883, leg. Cl. 

 Carolas von Gülich. 

 Obs. Culmus longiusculus (40-60" long. =0,o-0,8'" crass.), graci- 

 lis, debilis, flaccidus (in sicco), inferné longe repens, ad nodos 

 pubescens, incrassalulus, subgeniculatus, radices crassiuscule 

 filiformes, longiusculas (1-3" long.), simplices v. vix ramulosas 

 ápice tantum strigoso-radiculiferas emillens, internodiis abbre- 

 viatis (1-1,5" long.)^ glabris, vaginis flaccidis tenui-subscariosis 

 fuscescentibus, saepius fruslulatim evanescenlibus veslilis, hinc 

 inde ramos plus minusve evolutos gerens, minute sulcatus, 3-4- 

 angulatus, superne erectus (pars adsurgens 2.3-30" long.), rectus, 

 vaginatus ac foliiferus, inlernodiis longioribus (l,o-3" long.), 

 longiludinaliter minute striatis ac subangulatis, modice alque 

 minute pilosis, nodis non v. vix incrassatis pubescentibus, ápice 

 in rachide racemifera productus. Foliorum vagináe, inferae abor- 

 tivae, tenui sub-scarioso-membranaceae, saepius limbo deslitu- 

 tae ac fruslulatim evanidae, superae evolutae, herbaceae, sub- 

 inflatulae, a culmo saepius solulae (1-1,o" long. = I"' diam.), 

 subflaccidulae, inlernodiis ac linibis breviores (suprema excepta 

 3" longa), dense minuteque longiludinaliter impresso-striatae, 

 densiuscule puberulo-pilosae, margine altero externo subciliola- 

 to, altero interno glabra lo, ad os inlus glabrae exlus subbarbalu- 

 lae; ligulae minulae non exerlae limborum basi adpressae, 

 membranaceo-subscariosae, semidiscoideae, margine integrae v. 

 vix denticulalae, glabrae; limbi vaginis longiores (supremo ex- 

 cepto), ovalo-lanceolali, sessiies, basi inaequilalerales, latere 

 altero (interno) attenuato-cunealo, altero (externo) late retúndalo, 

 subauriculato-cordalo, ápice acutissime allenuali (2,5-3" long. 



