STIPEAE PLATENSES IR) 



lineari - lanceolatus glaber, sursuni subasperulus , apice abrupte 

 patentimque villis ipso vix brevioribus comatus; anthopodium dia- 

 metrum flosculi, 2-3-plo superans albo-villosum; arista persistens 

 flosculo 3-5-plo longior. Culmi simplices folia e convoluto-planiu- 

 scula glabra sublaevia longe superantes, panicula diffusa erectav. 

 nutans . 



Hab. Vulgata per totam planitiem pampeanam a Rto Negro (,Pa- 

 tagoniai usque ad Chaco, Misiones etc.,per ann. 1880-1900. 



Obs. Perennis, dense v. laxe caespitosa. 



Culmi folia longe superantes (150-650 mm alt.) glabri vaginati, 

 nodis non v. vix incrassatulis glabris. 



Folia viridia non v. leniter glaucescentia, quandoque brevia caesp- 

 itosa (15-50 mm alt.) conferta convoluta (non juncea!) rigidula acu- 

 ta non v. vix subpungentia (clausa 0,4-0,7 mm diam.^aperta 

 1-2,5 mm lat.) quandoque elongata relaxata (100-400 mm long.) pla- 

 niuscula i2-4 mm lat.) vix in sicco plus minusve convoluta, limbis 

 glabris non v. vix in juventute scaberulis, leniter 5-15-striatis, va- 

 ginis adpressis v. relaxatis Iaevibus,ore truncato-auriculatis, auri- 

 culis parce longiusculeque piloso-barbatis in senectute saepius nu- 

 dis, ligulis angustis scariosulis integris v. plus minusve denticu- 

 lato-erosulis glabris. 



Inflorescentia ample paniculata laxissima erectiuscula v. secunda 

 (40-250 mm long.) nuda v. vagina folii supremi parce inflata ve- 

 stita, ramis tenuibus angulosis scabridis pedicellis, (2-12 mm long.) 

 leiiiter compressulis sursum vix mcrassaiulis vix scabridis. 



Spiculae relaxatae erectae v. patulae; glumis flosculo semper con- 

 spicue brevioribus, angustissime linearibus, non v. vix carinatulis 

 obsolete 1-nervibus, infera angustioie et breoiore (5-7 mm Iong.= 



