STIPEAE PLATENSES 139 



Arista tenuis persistens nuda pallida (16-22 mm long.) obsolete 

 geniculata, non v. vix torta et scabrida. Articulatio glumellae cum 

 arista parum manifesta vix transverse annulo-nerviformis. 



Species statura vere pusilla, vagina spatliacca atque exiguitate 

 spicularum mox dignoscenda. An forma depauperata glabrataque 

 St. hystricinae Speg.? 



41. I§»tipa paraniilloeusis Speg., n. sp. 



Diag. Glumae latiuscule lanceolatae, 

 flosculum parum superantes, infera 

 quam supera brevior, 3-nerves e vire- 

 scenti violascentes; flosculus subfusoi- 

 deus non v. obsoletissime subscaber, 

 glaber; anthopodium diametrum flosculi 

 aequans v. vix superans, pubcscens; 

 » *" ° corona subobsoleta calloso-marginifor- 



41. stipa paiamiuoensis Speg. j^-jjjg ciUoIata; arista persistens flosculo 



a. Spicula Vi 



b. Fioscuius Vi 3-4- plo longior. Culmi folia subulato- 



C. FloiCUluS Vi ••111 j 



juncoidea glabra v. saepe retrorse sca- 

 brida non v. vix superantes; panicula angustissime linearis depau- 

 perata, saepius vaginata. 



Hab. Non rara in rupestribus alpinis (2000-3000 m alt.) Cerro 

 de los Cordobeses, Cerro Ximenes, Paramillo de Vspallata prope 

 Mendo^a, Jan. 1895 (C. S.). 



Obs. Perennis caespitosa v. rarius solitaria, caespitibus laxissi- 

 mis parvis (50-100 mm alt. = 20-50 mm diam.). 



Culmi pauci folia plus minusve superantes subvalidi (150-350 

 mm alt. = 1-1,5 mm diam.) glabri, laeves, ad apicem usque vagi- 

 nati, erecti v. hinc inde leniter geniculati, nodis saepius absconditis 

 non incrassatis annulatim sulcatis glabris fuscescentibusque. 



