STIPKAE 1'LAT);NSES 



85 



18. I§tipa Areehavalelai Spej 



Diag. Glumae clongato-lauceolatae, Ho- 

 sculo duplo et ultra longiores, 3-onerves, 

 subviolascentes; flosculus subteres, gla- 

 bcr, totus minutissime densissimeque pa- 

 pilloso-asperulus; corona cylindraceo-cu- 

 puliformis, acie horizontalis denticulalo- 

 setulosa, basi eximie constricta; anthopo- 

 dium Hosculum 4-plo superans, albo-vil- 

 losum; arista persistens flosculo 9-10-plo 

 longior, ad tertium et quartum suprema 

 geniculaia. Culmi foUa ex applanato con- 

 voluta scabra longe superantes, ad nodos 

 pubcscentes; panicula depauperata nutans. 



Hab. hi campis graminosis prope Mon- 

 tevideo (J. Arechavaleta) et etiam, sed ra- 

 rissime, in rupestribus Sierra del Tandil , 

 Mart. 1893 (C. S.). 



Obs. Perennis, non v. vix caespitulosa, 

 caespitibus valde relaxatis (150-450 mm 

 alt. = 50-150 mm diam.). 



19. siipa Areohavaietai speg. Culnii folla fcrc scmper longc superantes 



a. Spicula ' ,. 



b. Fioscuius V, . (3.50-900 mm aIt.=l-2 mm diam.) teretes 



glaljri non scabri, non v. vix longitror- 

 sum striati, ad apicem usquc foliati, 2-3-nodi, nodis incrassatuHs 

 saepius retrorse pubescenti hispidulis non v. leniter fuscescentibus. 



Folia omnia isomorpha, viridia, herbacea, Umbis in juventute et 

 in sicco laxe convolutis, carinatis, per aetaten v. udis applanatis (100- 



