Part 1, 1909] SCHIZAEACEAE 49 
Type collected on limestone cliffs, on the road from Utuado to Arecibo, Porto Rico, July 13, 1901, 
Underwood & Griggs 802 (U.S. Nat. Herb. xo. 405735). 
DISTRIBUTION : Confined to Porto Rico; upon limestone cliffs and partially shaded or open 
rocky slopes. 
21. Anemia aurita Sw. Syn. Fil. 157. 1806. 
Osmunda aurita Sw. Prodr. 127. 1788. 
Mohria aurita J. Smith, Lond. Jour. Bot. 2: 388. 1843. 
Rhizome creeping, densely clothed with turgid acicular blackish hairs; fronds dimor- 
phous, dorsal, distichous, the fertile ones equaling or often surpassing the sterile. Sterile 
fronds ascending or arching, 15-35 cm. long; stipe arcuate or flexuous, 8-15 or rarely 19 cm. 
long, light- or dark-brown, stoutish, clothed at the base like the rhizome, above with 
spreading or antrorse yellowish or brownish filiform hairs; lamina narrowly deltoid to 
oblong-deltoid, rarely oblong, 10-17 cm. long, 5-11 cm. broad at the base, bipinnate below, 
simply pinnate toward the apex, the uppermost segments more or less confluent at the 
obtuse or subacute apex; pinnae spreading, approximate, the lower and middle ones dis- 
tinctly stalked, ovate-deltoid to rhombic-ovate, truncate at the upper base and close to the 
rachis, cuneate below; lowermost pinnae fully pinnate at the base, with 1-4 pairs of ovate, 
orbicular, or obovate segments below the obtuse lobate apex, the basal ones stalked and 
rarely rhombic-ovate to deltoid ; middle pinnae gradually simpler, the uppermost rhombic- 
oblong to rhombic-ovate, exciso-cuneate at the base below; veins elevated below, subim- 
mersed but evident above; margins strongly and sharply inciso-denticulate, thickened, 
flattish or slightly revolute ; leaf-tissue rigidly coriaceous, bright lustrous green and very 
minutely glandular upon both surfaces, glabrate below. Fertile fronds 25-45 cm. long; 
stipe stoutish, strict or a little flexuous above; fertile lamina one-third or one-half as long 
as the stipe; pinnae alternate, spaced, ascending, the lower ones up to 6 cm. long, long- 
stalked, those above gradually shorter; pinnules pilose, glandular, spaced, the segments 
subflabellate; spores broadly striate, the ridges subflexuous and undulate. 
TYPE LOCALITY : Jamaica. 
DISTRIBUTION : Confined to Jamaica, mainly in the central and western parts of the island, on 
rocky partially shaded slopes, at 600 meters elevation or less. 
ILLUSTRATION : Hook. Ic. Pl. p/. 903. 
22. Anemia mexicana Klotzsch, Linnaea 18: 526. 1844. 
Ornithopleris mexicana Underw. Our Nat. Ferns ed. 6. 76. 1900. 
Rhizome creeping, thickly clothed with acicular turgid blackish or dark-brown hairs; 
fronds several, dorsal, distichous, close, the stipes of the fertile fronds not equaling the 
sterile fronds. Fertile fronds 25-50 cm. long; stipe 13-28 cm. long, slender or usually 
stoutish, dull-stramineous from a darker base, canaliculate along the ventral face, often 
angled in drying, at first dark-fibrillose near the base, glabrate above; sterile lamina del- 
toid-ovate, usually very broadly so, 7-23 cm. long, 7-20 cm. broad, acute, once-pinnate, 
the rachis stramineous, canaliculate along the ventral face, glabrate or with a few blackish 
acicular hairs at the side; pinnae 3-7 pairs, contiguous or half their width apart, spread- 
ing, the lowermost the largest, petiolate, lanceolate-oblong to ovate-lanceolate, acute or 
attenuate, subcordate-truncate at the base, or the lower side exciso-cuneate; middle pinnae 
similar, gradually smaller, subequilateral at the base, the upper ones free, sessile, or the 
uppermost on either side confluent with the terminal segment, this usually larger than the 
pinna below, inequilateral, cuneate, subcordate or sometimes unequally hastate ; leaf-tissue 
rigidly membrano-chartaceous, dull-green and glabrous above, paler and minutely glan- 
dular below; costae nearly medial, conspicuously elevated, stramineous; veins very oblique, 
repeatedly dichotomous, very close, distinctly elevated upon both surfaces, fibrillose-hirtous 
below or often nearly glabrous; margins thickened, sharply and unevenly serrulate-den- 
ticulate; fertile pinnae 9-30 cm. long, invariably surpassing the sterile lamina, often greatly 
so, the panicle as long as the stalk or longer, flattish or the divisions somewhat involute, 
short, the lower and middle ones petiolate, remote, the upper ones simpler, shorter, densely 
crowded; spores closely cristate-striate, the ridges somewhat flexuous. Sterile fronds 
shorter, 13-45 cm. long, the stipe and lamina about equal; lamina 13-25 cm. long, 11-18 
cm. broad, deltoid-ovate to oblong-ovate, otherwise as in the fertile frond; pinnae 4-7 pairs. 
