BROADHURST: STRUTHIOPTERIS IN NORTH AMERICA 3883 
pinnae 35-50-jugate, narrowly oblong, the apex abruptly acumi- 
nate, slightly curved, not serrate, the base cuneate to somewhat 
rounded, petioled in all the lower ones, 12-15 cm. long, 13-17 mm. 
wide; margins entire, not revolute; leaf tissue coriaceous, yellow- 
‘ish below when dried; lower surface deciduously araneous with 
yellowish fibrillose scales, the costae also with fibrillose scales; 
veins not prominent yet distinct, the vein spaces 18-20 to I cm. 
Sporophyls 143 cm. long; stipes 66 cm. long; lamina abruptly 
reduced at the base; somewhat reduced at the apex; pinnae 40- 
50-jugate, 22-26 cm. long, 3-4 mm. wide, curved or twisted, heavy, 
very much reflexed in drying, the sterile (ventral) surface not 
visible; sporangia brownish yellow; indusium delicate, fawn to light 
tan, quite regularly lacerate to the base, the margin finely fimbriate. 
Type: Wercklé 1609, from Costa Rica. 
DiIsTRIBUTION: Known from Costa Rica only. 
SPECIMENS INCLUDED: Several sheets without collection num- 
.ber from Costa Rica collected by Wercklé, now in the U. 5S. 
National Museum (no. 575241, 575242, and 575243) and in the 
New York Botanical Garden. 
This species is conspicuously different from any other species, 
both the sterile and the fertile fronds. Among the several char- 
acters given in the description the white or hoary, fibrillose scales 
of the rachis are perhaps the most peculiar, while the long, curved, 
fertile pinnae, very much lighter in color (sporangia and indusia) 
than in any other North American species, are the most striking. 
Many foreign species have been incorrectly attributed to North 
America; e. g.,even American writers have included in their local 
flora Lomaria attenuata Willd., L. procera Spreng., and L. Schom- 
burgkii Klotzsch. “The tonguelike tips and bases of the pinnatifid 
leaves of attenuata Willd. differentiate it from S. polypodioides with 
Which it has been conf used. Under Lomaria procera, Sprengel cites 
Osmunda procera Forst. The name was first used for a New Zealand 
*Pecies with remote or distant pinnae, which were ovate-oblong in 
shape. An early picture in Labillardiére gives two forms of pinnae, 
neither of which resembles S. lineata or S. striata with which it is 
ity confused. A fragment of the type of L. Schom- ~ 
as such characteristic pinnae that it should not be made 
"62 with any North American species; under it, however, 
stensen places the species L. rufa Spreng. and L. Ryani Kaulf. 
There is much need of more material from Central America; 
