C. M. Hicken: Filices novae Argentinae. 215 
I would also refer to this species no. 485, G. R. Vasey, collected in 
the Cascade Mountains, probably near Ellensburg, Wash., in 1889. This 
was referred doubtfully by Nelson (Proceedings U. S. National Museum, 
XXXIII, 713) to A. pedicellata Greene, but that has a glandular inflores- 
cence, The Vasey specimen differs from the type of A. concolor only in 
that the stems are somewhat stouter, the leaves thicker and less sud- 
denly narrowed into the petiole and the heads shorter-pedicelled. 
228. Carduus palousensis Piper, |. c., p. 610. | 
Perennial stems erect, usually loosely branched above, 30 to 90 cm 
high, tomentose when young, becoming glabrous; leaves lanceolate in 
outline, pinnatifid into 3 to 7 pairs of entire or toothed lobes, early beco- 
ming green and glabrous above, persistently white-woolly beneath, 5 to 
15 cm long, bearing but few prickles, the uppermost commonly simple; 
head 3 to 4 cm high, often on long nearly naked peduncles, involucre 
hemispheric, its braets firm, closely imbricated in several successively 
shorter ranks, not ciliolate, all but the innermost prickly-pointed, each 
bearing an oblong or linear glandular spot near the tip; innermost atte- 
nuate-acuminate and feebly armed or muticous, flowers yellowish white; 
corolla lobes shorter than the throat; pappus bristles somewhat clavellate 
at. tip; anther tips acute. 
This species was erroneously referred to C. Breweri (Gray) Greene in 
the Flora of the Palouse region. 
Specimens have been examined as follows: Silver Lake, Henderson 
2277; Ellensburg, Whited 558, 857; Pullman, Elmer 99; Piper 1589 
(type); without locality, Vasey 477, 478, Waitsburg, Horner 303. 
LXXII. C. M. Hicken, filices novae Argentinae. 
(Ex: Trab, Mus. Farmac. Buenos Aires, no. 19, 1907.) 
1. Nephrodium argentinum (Hieron.) Hicken var. major Hicken, l. c., p. 4. 
Differt a forma typica, dimensionibus multo majoribus, laminis 
usque ad 85 cm longis, 14 cm latis; pinnis 7 cm longis. Planta omnino 
glabra. 
Argentinia: M. Lillo en a recueilli à diverses reprises dans le 
département de Tafi, oü l'on rencontre cette fougere jusqu'à 2500 metres 
d'altitude. (Lillo, no. 5433, à 1800 m. s. m. et no. 3665 à 2500 m. 
s. m.). 
2. Nephrodium Etchichuryi Hicken, l. c., p. 5. 
Lastrea; rhizomatibus longe repentibus (5—7 mm crassis) squamis 
linearibus glabris c. 1/,—1/¿ mm latis, 8—10 mm longis, sparse obsitis; 
foliis c, 50—80 cm longis, petiolatis; petiolis c. 30—35 cm longis, rhizo- 
Matis squamis similibus basi sparse vestitis, mox denudatis, glaberrimis 
Vel minutissime pubescentibus, compressis, superne sulcatis, nitentibus; 
18* 
