126 



CAROLUS SPEGAZZINI 



Arhta teniiis rigidiuscula (25-30 mm loiig.) pcrsistons, scnborula 

 nuda ob^olotissinie 2-geniculiila, goniculo supcro ad modiuni v. pa- 

 rum infra, iurcro ad tertium posticum t?ilis, non v. vi\ torta; arti- 

 culatio aristaQ cum glumoila nuda, vix annuiatim ncrvoso-noduli- 

 formis. 



Corona plane nulla. 



35. Stipa niegapofamica Sprng. 



Siipa megapotamica Spreng., Trin., 

 Act. petr. 1, p. 77 (1831). = Arech., Las 

 gram. urug. p. 263, n. 7 (1894)! 



Stipa juneoides Speg., Contr. Flor- 

 Ventana, p. (58, n. 313. 



Diag. Glumac lineari-lanceolatae, flo- 

 sculo subduplo longiores, tenuiter 3-5- 

 nerves, hvalinae; flosculus subfusoideus 

 supcrne glaber, inferne obsoletc pilosulus; 

 corona nulla; anthopodium diamctro flo- 

 sculi 3-1^10 longius, albo-villosum; arista 

 persistens 9-12-plo flosculo longior, infra 

 tertium infimum geniculata. Culmi folia 



setaceo-juncoidea laevia aequantes v. parum superantes; panicula 



linearis angusta subrelaxata v. interrupta. 



35. Stipa mefapotamica Sprng. 



a. Spicula ", . 



b. Floscolus ' , . 



c. Floseulus "i . 



Hab. In collinis prope Montevideo (J. Arechavoleta), in Sierra 

 del Tandil, Dec. 1891 (OK.) et in Sierra de la Ventana et de Curci- 

 maldl, Nov. 1895 et Dec. 1899 (C. S.). 



Obs. Perennis dense caespitosa, caespitibus parvis v. majusculis 

 (50-250 mm alt. et diam.). 



