192 MUSEO NACIONAL DE BUENOS AIRES. 



vaginis relaxatis ómnibus limbiferis, infimis fuscescentibus 

 snperis pallide stramineis glabris laevibns rigidulis, lignlis 

 brevissimis marginiformibns saepius truucatis atque denticnla- 

 tis glabris, limbis erectis rigidis deorsum planis sursum con- 

 volutis acutiusciilis 15-17-nerYÍbus, nervis ómnibus aequi- 

 crassis tennibus, viridibus, utrimqne scabernlis (100-150 mm. 

 long. = 3-5 mm lat); cnlmi erecti recti firmnli teretes (35-50 

 cm alt. = 1-2 mm crass.) laevissimi, in tertio Ínfimo binodes, 

 ultra médium (in juventiite saepe apicem iisque) vaginati, 

 nodis absconditis glabris non v. parum f errugineis ; panícula 

 subspiciformis erecta (10-20 cm long. = 10-15 mm diam.) 

 saepius subcompactiuscula 7-8-nodosa, internodiis elonga- 

 tulis, rachi tereti scaberula, radiis ad nodos 4-7 semiverticilla- 

 tis, nonnullis brevissimis a basi, nonnullis elongatis (5-70mm. 

 long. ) ramulosis a medio pedicelligeris, pedicellis numerosis 

 erectis adpressis scabrido-pubescentibus vix subclavulatis 

 quandoque brevissimis (1 mm long.) quandoque spiculis lon- 

 gioribus (5-7 mmlong.); spiculae semper erectae adpressae 

 confertiusculae anguste lanceolatae (G mm long.) a latere 

 leniter compressulae glaberrimae subnitidulae, glumis li- 

 neari-lanceolatis acutis (non aristatis neo mucronatis) scario- 

 sulis pallide viridibus v. obsoletissime subpurpurascentibus, 

 dorso vix carinatulis non v. vix subscabris, infera (5,5 mm 

 long.) subbreviore 1-nervi, supera 1-nervi sed saepius basi 

 obsoleto breviterque 3-nervi (6 mm long.) parum longiore, 

 flosculo hermaplirodito lineari-lanceolato (4-4,5 mmlong.), 

 glumella infera subli^^alina scariosula glabra sed extu¿ doise 

 minuteque pulverulento -scabrida tenuiter 3-nervi, ñervo 

 mediano paulo ante apicem in arista j^roducto, ápice acuta 

 integra v. brevissime bifida, supera angustissima parum bre- 

 viore tenuissima enervi; callo brevissimo rotundato pilis 

 numerosis flosculum parce superantibus vestito ; jDedicello 

 floris sterilis, v. racheos productione, tenuissimo (2 mmlong). 

 dense longissimeque villoso; arista scabra dorsali tenui (5-6 

 mm long. ) in tertio infero ± ve torta. 



682. Aira caryophyllea L. = Steud., Syn. glum. i, p. 221, n. 35. 



Hah. Abunde in pratis editioribus secus Garren -leofú, 

 aest. 1899-901 (N.Illin). 



683. Deschampsia antárctica (Hook. f. ) Dsv. = Gay, Fl. Chil. vi, 

 p. 338. 



Hab. Non rara in pratis prope Kman-aik secus Rio Chico, 

 Febr. 1898 (C. A.) et secus Carren-leofú, aest. 1900 (N. Illin). 



