96 
MUSEO NACIONAL DE BUENOS AIRES. 
acutiusculis submucronulatis, late scarioso-marginatis, imfe- 
ra 1-nervia, supera margine denticulato-scabra breviore. 
Hab. Rara in seopulosis maritimis: Port Vancouver; 
Blossom Bay; Port $. John; Ushuuáia. 
Obs. Species pulchella ligula elongata ad F. fuegianam 
Urv., habitu ad F. antarcticam Kth. vergens, ab utraque 
tamen satis distincta glumis valvulisque acute carinatis 
olaberrimis. 
Radix comosa fibris longiusculis (2.5 cm long.) albidis 
v. fuscis glabris tenuibus flexuosis; folia culmis fertilibus 
breviora subrigidula 4-8-fasciculata alterna, vaginis elon- 
oatulis (2-6 cm long.) infimis relaxatis, superis arcte am- 
plectentibus, glabris, obscure striatis deorsum tenuibus 
subnitentibus, limbis erectis v. divaricatis (5-10 cm long., 
2 mm lat.) rigidulis saepe subflexuosulis, extimis planis 
v. plicatis, intimis teretiinvolutis, dorso rotundatis, ventre 
canaliculatis atque minute denseque striatis, utringue gla- 
bris, fere e dorso vaginaram ligularumque exsurgentibus, 
ligulis exertis elongato-lanceolatis (4-6 mm long.) hyalinis 
apice acutis integris v. denticulatis; culmi fertiles erecti ad 
medium et ultra vaginati pauci graciles folia superantes 
(12-80 cm long.) glabri striati, non scabridi; panicula spi- 
caeformis contracta erectiuscula (3-6 cm long.), lobulata, 
plus minusve densa, non v. vix secunda, rachide angulosa 
glabra striata, ad radiorum basin nodulosa et ad infimos 
submanicata, ad superos tantum annulato-callosa, radiis ere- 
ctis adpressis, infimis remotiusculis 3-natis (mediis 2-natis, 
supremis solitariis ), altero brevi, caeteri elongatulis, apice 
1-5-spiculigeris angulosis glabris; spiculae erectae, lanceola- 
tae compresae (9-10 mm long., 3-3,5 mm lat.) non niten- 
tes, glabrae, 4-florae, pedicellis angulosis scaberulis apice 
vix incrassatulis fultae; glumae subaequilongae dorso ar- 
quatulae acuteque carinatae et scabridae, infera vix bre- 
vior (5-5,5 mm long.) acuta margine integra 1-nervia, supera 
longior et latior (6-6,5 mm long.) 3-nervia superne ad mar- 
ginem denticulata; flores, infimus sessilis, caeteri pedicel- 
lati remotiusculi, glumas superantes mediocres (7-8 mm 
long.), racheolis glabris (1 mm long.) compressi acuteque 
carinati, glaberrimi laevissimi, valvula infera naviculari-ar- 
quatula, pro ratione lata (7-8 mm long., 2 mm, lat.) dorso 
acuta scabriuscula, apice acutato-mucronata (non aristata) 
