562 
1. POLYPODIUM L. 
Sori round, naked, in one or more rows either side of the midrib; stipe 
articulated to the rootstock,—Our single species is epiphytic, growing 
on tree trunks. 
1. P.incanum Swz. Rootstock woody, wide creeping, scaly: stipes 3 to 9 cm. long, 
densely sealy: fronds 3 to 15cm, long, about 3 em, wide, cut to the rachis into entire 
pinnie which are densely squamous beneath; texture coriaceous with the veinlets 
indistinct.—On trees, Houston (/fall, Ravenel), and probably throughout the State. 
(P. valgare L. should be looked for in the northern part of the State, and J’. thysano- 
lepis A, Br. in the southwestern), 
2. GYMNOGRAMME Desv. 
Sori naked, mostly linear, following the course of the veins, and like 
them simple, forked, or variously branching.—Our single species is a 
small plant growing in rocky places. 
1. G. Bhrenbergiana Klotzsch. Rootstock slender, creeping: stipes 7 to 18 cm, 
long, grayish-brown, slightly scaly and puberulent: fronds 2 to 7 em, each way, 
pentagonal, pinnate with the lower pinnw much the largest, hispid above, tomentose 
beneath, (G. hispida Mett.)—Chenate mountains, Presidio County (Nealley). (G. 
triangularis, reported from west Texas in Contr. U.S. Nat. Herb. i, 60, was based on 
Notholena Hookeri). 
3. NOTHOLAINA R. br. 
Sori naked, at first roundish or oblong, soon contluent into a narrow 
marginal band; margin of the segments often inflexed so as to form a 
covering for the sori when young.—Ferns of small or medium size 
mostly growing on rocks. 
$1. Fronds scaly, hairy, or tomeniose beneath. —EUNOTHOLAENA, 
* Fronds once pinnate. 
1. N. ferruginea (f{lumb.) Hook. Rootstocks short, ascending, with dense rigid 
scales: stipes 3 to 10cm. long, cespitose, silky-woolly at first: fronds 1.5 to 3 dm, 
long, 2 to 3 em. wide, narrowly lanceolate; the pinnae numerous, pinnatifid, densely 
tomentose beneath, with whitish and afterward rusty wool.—Limpia Cation, Pre- 
sidio County (Neailey), and probably throughout southwestern Texas. 
2. N. sinuata (Swz.) Kaulf. Rootstock short, thick, with dense slender chaffy 
scales: stipes 3 to 10 em. long, scaly: fronds 1.5 to 6 din, long, 1 to 3 em. wide; the 
pinne varying from entire to sinuate, densely scaly beneath. -Chenate mountains, 
Presidio County (Nealley), San Geronimo Creek (Mevrerchon), Crab Apple, Uvalde 
Cation (Mrs, Young), Gillespie County (Jermy), and probably widely distributed in 
southwest Texas. 
** Fronds bipinnate to tripinnatifid. 
3. N. Aschenborniana Klotzsch. Rootstock short, creeping, clothed with rigid 
black scales: stipes 7 to 10 em, long, densely scaly, the scales ciliate: fronds 2 to 4 
dm. long, 3 to 7 em. wide, mostly tripinnatifid, green above, covered below with 
rusty ciliate scales,— Texas (Treeul, Drummond), but not collected recently; to be 
sought in the southwest. 
§2. Fronds farinose beneath, with white or yellow powder.—CINCINALIS Desv. 
“Fronds pentagonal, bipinnatifid. 
4. N. Hookeri D.C. Eaton. Rootstock short, densely covered with rigid dark- 
brown scales: stipes 1 to 2 dm. long, reddish-brown, smooth, shining: fronds 3 to 9 
