BROADHURST: STRUTHIOPTERIS IN NORTH AMERICA 361 
10. S. chiriquana Broadh. sp. nov. 
Plants terrestrial. Rhizome (not seen) evidently large, the 
scales lanceolate, 4-10 mm. long, snuff brown to tobacco brown. 
Sterile fronds 1.7-2.1 m. long; stipes 71-86 cm. long, I-1.6 cm. 
thick at the base, angulate, reddish brown to purplish brown, the 
scales lanceolate, 2-6 mm. long, yellowish to purplish brown, pro- 
jecting noticeably from the stipe and mixed with smaller, finer 
ones which are more or less appressed; lamina 106-123 cm. long, 
38-45 cm. wide, oblong, slightly reduced at the base (between 
type B and C * in the normal frond seen, without vestigial pinnae), 
the apex gradually reduced, the terminal pinna 6.5-9 cm. long, 
the lower pinnae more or less opposite; pinnae 44-50-jugate, 
narrowly lanceolate, straight to slightly curved, the apex serrate, 
long-acuminate, the base subcordate to cordate, the upper pinnae 
adnate, the lower pinnae sometimes long-petioled (1 cm.), 19-25 
cm. long, 2.3-3 cm. wide; margins narrowly revolute;f leaf tissue 
tigid-herbaceous, the under surface but slightly or not at all 
araneous, the costae almost naked; veins more or less raised 
below (not so distinctly as in most specimens of S. striata), the 
veln spaces 12-15 to I cm. Sporophyls 1.6 (in young plant)—2.4 
m. long; stipes 64-112 cm. long, slightly lighter than the sterile, 
or yellowish and tinged with reddish brown; lamina 98-124 cm. 
long, rather gradually reduced at the apex, the base slightly or 
abruptly reduced; pinnae 49-52-jugate, 15 to 23 cm. long, 3-5 
mm. wide, the apex with a sterile tip 3-5 mm. long, the base 
rounded ; sporangia yellowish brown; indusium delicate, very early 
deciduous, and irregularly lacerate. [PLATE 26. 
: Type in the U. S. National Herbarium, no. 676110 to 676114 
inclusive, collected in humid forests of the upper Caldera water- 
shed between “Camp I” and the Divide, Holcomb’s trail, above 
El Boquete, Chiriqui; altitude 1650-1925 m., William R. Maxon 
5050, March 23, IQII. . 
SPECIMENS INCLUDED: U. S. National Herbarium, no. 675825 
to 675828 inclusive, collected in humid forests of Cuesta de Las 
Palmas, southern slope of Cerro de la Horqueta, Chiriqui, alti- 
i 1700-2100 m., Maxon 5442 (partly abnormal), March 18, 
OII, 
*Bull. Torrey Club 39: . a 2 
Fleveers Y \lub 39: 264. f. 1. 10 Jl 1912. 
The larly revolute in the abnormal plant, Maxon 5442, included in this species- 
we Tevolute part is narrow when compared with that in S. striata, which has pinnae 
Ut equal in width 
