194 RopiINsON: PTERIDOPHYTA OF THE HAWAIIAN ISLANDS . 
Margin crenate to serrate, at least in the lower part; 
rootstock erect; leaves 10-15 cm. X 2-4 mm. 
Margin crenate or dentate from base to apex; 
sori oval, alternate, ees amedial on serrations. P. Haaliliolanum, 
Margin sinuately pinnatifid below, subentire in in i 
apical third; sori a inframedial. P. Saffordii. 
Leaves pinnatifid. 
asa gn Aonig reduced to a wing along the midrib; 
er surface and margin marked by scattered, 
zener glandular hairs 
Leaves stisptic-lencediate- to elliptic-caudate, 
m.; sori nearly covering leaf 
tissue from costa to margin P. sarmentosum. ; 
-aperee linear to narrowly POS OM 15-25 a 
1.52 cm.; sori ae dial. P. Adenophorus. 
ahlonec ¢ 
oblong, 
Sais varying fais Hneok to lanceolate with 
narrow sinuses between them, to oblong and obtuse 
with broad sinuses; pellucid lines between the 
P. pellucidum. 
vein 
Leaves soe cee to deeply tripinnatifid, bearing numerous, 
reddish, resinous glands beneath 
Leaves bipinnatifid 
Leaves linear, 5-15 cm. X 5-7.5 mm., pinnae divided 
into 2 or 3 segments. P. hymenoph: 
Leaves not linear; pinnae divided into 6 to 15 seg- © : 
ments. 
Leafstalk 0.5 mm. in diameter; blades oblong- 
ovate, 3.5-5 cm. X 1-2.cm.; pinnae compact. P. abietinum. 
k 1-2 mm. indiameter; blades more saangge 
Io cm. long. - 
Leaves subcoriaceous, blades ovate-lanceo- 
late; pinnae oblong, 20-30 cm. X 6-8 cm.; 
segments linear; sori narrower than the 3 
segments. P. Hillebrandit. 
Leaves chartaceous, blades elliptic-lanceo- 
late to elliptic-caudate, 10-35 cm. X 2-5 
cm., pinnae lanceolate; segments ob- 
lanceolate to spatulate; sori as broad as 
the segments. P. tamariscinum- 
Leaves tripinnatifid; pinnae 15-25 cm. X 2-3 cm.; seg- oe 
ments spatulate; sori as broad as the segments. P. Gaudichaudit- 
Potypopium Hooker! Brack. Fil. U. S. Expl. Exp. 4. 18; 
Polypodium setigerum Hook. & Arn. Bot. Beech. 103. 1832+ _ 
Blume. 
Grammitis setigera J. Sm. Hist. Fil. 181. 1875. 
TYPE LOCALITY: Oahu. 
DistTRIBUTION: Polynesia, Hawaiian Islands. 
