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Revista de la Facultad 
subimperspicue papilloso-scabrae; flores terni in * quaque spicula, 
inferus fertilis subsessilis, pedicello glabro (0,5 mm long.) fultus 
major, glumella infera lanceolata (6-6,5 mm long. =2 mm lat.) 5- 
nervia subglabra arista breviore (3-4 mm long.) armata, secundus 
etiam fertilis pedicello longiusculo glabro clavulato (2 mm long.) 
fultus minor, glumella infera lanceolata (5 mm long. =1,5 mm lat.) 
5-nervia subglabra arista minuta (2 mm long.) armata, tertius su- 
premus sterilis pedicello glabro (2 mm long ) gracili compressulo 
fultus, ad glumellam anguste lineari lanceolatam muticam (3 mm 
long.) reductus. 
Species E. andino Trin. peraffinis sed spiculis et aristis conspicue 
minoribus recedens; an ejusdem varietas tantum? 
1/223. Elymus chubutensis Speg. (n. sp.). 
Diag t Caespitosus robustus flaccidus, vaginis ómnibus glabris, 
ligulis brevissimis denticulatis, limbis membranaceis mediocribus 
subglaucescentibus glabris non v. vix subscabriusculis culmis elon- 
gatis, ad apicem usque vaginatis, spica angusta erecta, spiculis 
geminis, glumis anguste lanceolatis acutis, floribus 4 v. 5, Ínfimo 
sessili caeteris pedicellatis, 3 inferís fertilibus arista ipsos non 
aequante armatis, supremo mutico abortivo. 
ílab. In pratis collinis prope Teka-choique. 
Obs. Culmi caespitosi fasciculati, fértiles et steriles commixti, 
basi constipad leniterque arquatuli parcissime fibroso-radicati, cae- 
terum erecti recti (30-60 cnt alt.) saepius nodis 3 constrictulis fu- 
scis donati, glabri laeves v. vix sub lente valida subimperspicue 
striatuli; folia infera conferta saepeque arescentia atque fibroso eva- 
nescentia, supera sensim remotiora culmum ad apicem usque ve- 
stientia, vaginis plus minusve adpressis (3-15 cnt long.) glabris, 
ligula scariosa brevissima (0,5-1 mm long.) integra v. denticulata, 
limbis planiusculis (10-20 cnt long. =4-7 mm lat.), antice breviu- 
scule attenuato-acutatis utrinque glabris (vix dorso ad ñervos pri- 
marios leniter scabridis) viridi — glaucescentibus; spicae e viridi 
cinerascenti-glaucescentes erectae (5-10 cnt long.=6 7 mm diam.) 
lineares, utrinque breviter attenuatae confertiusculae, in prima 
aetate folio supremo vaginatae, dein plus minusve exertae, inter- 
nodiis racheos brevibus (4 mm long.) compressissimis, dorso nervo- 
sis, ventre laevibus, margine anguste subalatis atque ciliolatis, 
nodulis tumidulis; spiculae lineares (14-16 mm long.) semper binae 
in quoque racheos nodulo, subaequales; glumae rigidulae aequilon- 
gae, infera lanceolata planiuscula 4-nervia. supera lineari-sublanceo- 
lata subcarinatula 2-nervia (6 7 mm long.) antice in mucrone bre- 
viusculo (1-1,5 mm long.) sensim attenuatae; flores quaterni v. 
quiñi, inferus subsessilis, callo minuto puberulo fultus, caeteri pedi- 
cello (2 mm long.) compressulo minutissime pulverulento-pubescente 
fulti, 3 v. 4 inferí fértiles gradatim minores, supremus minimus 
sterilis; glumellae florum fertilium inferae (infimi 9 mm long.=2 mm 
lat.j lanceolatae pubescenti-asperulae ápice brevissime bidentatae 
