MACLOSKIE: REVISION OF FLORA PATACONICA. 59 



Patagonia, in the Chubut Territory, by Lago Fontana on watery 



meadows. 



Add Macl., p. 231 : 



P. SUBENERVIS Hack., apud Dusen, Neue Gefasspfl. 

 Patag., p. 7, Taf. 2, Fig. 3, and Taf. 7, Fig. 2. 



Perennis, rhizomate plus minusve repente, innovationibus intravaginali- 

 bus ; culmi innovationesque basi decumbentes, geniculato-ascendentes, ad 

 20 cm. alti, robusti, glaberrimi, 1-2 -nodes, nodo superiore prope basin 

 partis culmi erectae sito ; vaginae internodiis longiores, teretes, glaberrimae, 

 emortuae, inferiores mox dilabentes, suprema laxiuscula, fere medium 

 culmum aequans, laminam abbreviatam (1-1.5 cm - longam) ferens; ligula 

 brevissima, truncata, puberula; laminae lineares, obtusiusculas, mucronu- 

 latae, planae vel complicatae, innovationum ad 5 cm. longae, statu explanato 

 2.5 mm latae, culmeae parum breviores latioresque, omnes glaucovirides, 

 rigidae, patentes, saepe curvulae, subtus nervo medio marginibusque * 

 scabrae, nervis crassis supra parum prominentibus percursas; panicula 

 linearis, spiciformis, 4-6 cm. longa, ad 8 mm. lata, contracta, densa, stricta, 

 rachi inferne laevi, ramis plerumque binis, erectis, rigide filiformibus, sca- 

 berrimis, primario inferiore ad 2 cm. longo, in l /$ inferiore nudo, 3-4-spicu- 

 lato, secundariis brevissimis, plerumque unispiculatis, spiculis aequaliter 

 dispositis, subimbricatis, breviter vel brevissime pedicellatis ; spicula- 

 ellipticae, c. 7 mm. longae, 3.5 mm. latae, dense 3-4-flores, floribus sese ad 

 ir usque tegentibus, hermaphroditis e viridi et violaceo variegatae ; glumae 

 steriles parum inaequales (4 et 5 mm. longae), fertiles contiguas ad # 

 usque tegentes, late lanceolatae, acutae, I i-nervis, II 3-nervis; fertiles 

 ovato-lanceolatae, 5 mm. longae, acuminatae et mucronulatae, callo circum- 

 circa pilis i mm. longis rectis barbatae, ceterum glabrae, carina superne 

 scaberulae, praeter nervum medium in mucronulum productum subenerves, 

 i. e. nervis utrinque 2 tenuissimis vel omnino obsoletis percursae, chartaceo- 

 membranaceae, superne vix hyalino-marginatae ; palea gluma parum 

 brevior, lanceolata, acutiuscula, bidentula, carinis eximie spinuloso-ciliata ; 

 antherae 2.5 mm. longae, atroviolaceae ; stigmata longe lateque plumosa. 



S. Patagonia, in watery meadows in the mountains between Lago 

 Viedma and Laguna Tar, c. 1000 m.; north of Lago San Martin by Rio 

 Fdsiles in watery meadows, c. 800 m. 



The habit of the present species is like that of Poa stolonifonnis Presl, 



