270 BROADHURST: STRUTHIOPTERIS IN NORTH AMERICA 
cm. long, 12-28 cm. wide, lanceolate to ovate-lanceolate, abruptly 
reduced at the base (type D to E, with vestigial pinnae), gradually 
reduced at the apex, the terminal pinna 4-7 cm. long, the pinnae 
usually alternate, distant (1-2 cm.) in the lower third or half of 
the lamina; pinnae 28-60-jugate, linear, slightly curved to falcate, 
the apex long-acuminate, the base dilated in the upper part of 
the lamina, sometimes slightly contracted near the base in the 
lower pinnae, 7-16 cm. long, about I cm. wide (1-2 cm. at the 
dilated bases); margins entire (apparently subentire in the heavier 
ones owing to the shrinkage of the tissue between the vein apices); 
leaf tissue membranous to herbaceous, without scales; veins 
distinct above in membranous specimens, often appearing below 
as fine black lines, the glandular apices rather inconspicuous, often 
blackish, the vein spaces 10-14 to I cm. Sporophyls 40-70 cm. 
long; stipes 12-25 cm. long, with scarlike vestigial pinnae, brownish 
yellow to dull or purplish brown, or indistinctly bicolored; lamina 
18-58 cm. long, abruptly reduced at the base, gradually reduced 
at the apex; pinnae 20-60-jugate, 7-15 cm. long, 2-4 mm. wide, 
usually having a sterile tip 1-3 mm. long, the base slightly contracted 
(sometimes with slight, thin dilations below the contraction); 
indusium entire, not becoming lacerate, often reflexed; sporangi¢ 
dark brown. 
Type: From Martinique, Plumier, Foug. pl. 90. 1705. _ 
DIsTRIBUTION: Known from Montserrat, Guadeloupe, Domi 
ica, and Martinique. 
SPECIMENS INCLUDED: GUADELOUPE: Climbing epiphyte, 
“‘Foréts de la Decouverte,’”” Duss 4168 (Y, N). DOMINICA: Mt. 
Diablotin, Lloyd 898 (Y, N). Martinique: “Mt. de la Cale- 
basse,’ Berlanger 814 (Geneva; tracing, Y). Climbing on trees, 
“‘Foréts Deux Choux,’’ Duss 1555 (Y). Climbing on trees, Cale- 
basse, Duss 4588 (Y). 
The four islands furnishing the specimens of S. Plumie 
(23 sheets), lie near the middle of a chain of islands extending 
from Yucatan to South America. Passing either northwest al 
south along that chain, we find plants intermediate in agree 
between S. Plumieri and the following, more widely distribu 
species, S. polypodioides. Of the few specimens from G a 
four sheets (Sherring 146) are like S. Plumieri in the following 
respects: The rhizome scales lack the black median line; the stipe 
is marked with vestigial pinnae; the sterile lamina has the — 
rather abruptly reduced; the pinnae are very long; and the! 
ri studied 
