374 BROADHURST: STRUTHIOPTERIS IN NORTH AMERICA 
veins slightly grooved above, appearing below as distinct, fine 
lines slightly but not definitely raised, the vein spaces 10-13 to 
1 cm., the vein apices often marked by delicate, irregular, decidu- 
ous, scalelike growths. Sporophyls at least 100 cm. long; stipe over 
22 cm. long (complete stipe not seen); lamina 80 cm. long; pinnae 
about 60-jugate, 12-15 cm. long, 3-4 mm. wide, the apex with a 
sterile tip 2-4 mm. long, the base distinctly cordate and petioled, the 
petioles bearing throughout glandular swellings at the upper side 
where they join the rachis;* sporangia dark brown; indusium not 
very heavy, irregularly but quite fully lacerate, apparently quite 
persistent. 
Cotype in the U. S. National Museum, no. 472015, 472016, 
collected “Sommet. du Volcan de Poas,” 2,644 m., Costa Rica, 
Tonduz 10710, November 1896. 
If not distinct, this could well be considered a mainland form of 
S. lineata. It differs as indicated in the key, and also in having 
many more pinnae. The only island specimens of 5. lineata having 
more than 40 pinnae are the peculiar ones from Santo Domingo 
which were mentioned under S. lineata as quite different from the 
rest of that species; they, however, do»not resemble this plant 
collected by Tonduz, as they are much heavier in texture al 
have much narrower laminae. 
19. S. Shaferi Broadh. sp. nov. 
Plants terrestrial. Rhizome evidently large, the scales 1.5-2 
cm. long, tufted, rigidly.erect, linear, broader at the base, often 
abruptly so, yellowish brown with a definite dark brown eee 
Sterile fronds 32-42 cm. long; stipes 3-10 cm. long, 
somewhat angulate, straw-colored to brownish, th 
on the rhizome, shorter, loosely arranged or disappe 
age; lamina 16-35 cm. long, 14-18 cm. wide, oblong 
elliptical (young oblanceolate), abruptly reduced at ns ie 
long, 10-15 mm. wide (through the dilation or auricle), to the 
acuminate, entire, the base broadly dilated and fully ene 
rachis in the upper pinnae, in the lower ones narrowed se 
below the expansion or auricle on the lower side of the pin 
Free pe 
Each petiole has therefore a peculiar shouldered appearance, 
sterile pinnae have the same glandular expansion of the a 
