POLY PODIACEAE 49 
or nearly so, or 2-valved and marginal, attached at the inner side, opening 
outward. (Greek “kidney” and “scale,” allusion to the shape of the in- 
dusium.) 
Species about 17, in all tropical countries, about 7 in the Philippines. 
1. Fronds very narrow, 1 to 2 em wide, the pinnae of two oblong to orbicular, 
imbricated leaflets; cultivated only..............0....2:cccceceeeeteeeeeee 1. N. duffit 
1. Fronds 2.5 to 5 cm wide; pinnae oblong, prominently auricled at the base. 
2. N. cordifolia 
1. Fronds 8 cm wide or more; pjnnae oblong to linear-lanceolate, elongated. 
2. Pinnae deeply pinnately lobed, the lobes narrow, close, variable in 
length; fronds prominently brown-ciliate; cultivated only. 
8. N. floccigera, var. monstruosa 
2. Pinnae entire, or only slightly crenate or toothed. 
3. Fronds nearly glabrous, elongated, often exceeding 2 m in length, 
the pinnae ak ai not auricled; sori distant from the margins. 
4, N. biserrata 
3. Fronds more or ee brown-ciliate; pinnae always auricled on the 
upper side at the base; sori marginal or submarginal. 
5. N. hirsutula 
*1. N. DUFFII Moore." 
Tufted, from stout rootstocks, the rachis and stipes chaffy with brownish 
scales and hairs, the rachis 8 to 15 cm long. Fronds narrow, linear, 
elongated, 20 to 35 cm long, 1 to 2 cm wide, narrowed toward the base, 
the apex often forked. Pinnae numerous, the lower ones reduced and 
distant, the central ones close, each consisting of 2, oblong to orbicular, 
imbricated leaflets which are joined at the base, their margins entire or 
crenate, usually less than 1 cm long. 
Cultivated, not spontaneous; introduced. A native of Malaya and 
northern Australia. 
2. N. cordifolia (L.) Presl. 
Fronds tufted, erect, from a short, suberect rootstock, the wiry apioas 
roots often bearing tubers. Stipes 3 to 15 em long, glabrous or more 
usually clothed with slender, soft, brown paleae. Fronds 15 to 50 cm 
long, 2.5 to 5 cm wide, lanceolate, narrowed at both ends, the pinnae 
numerous, close, sessile, often imbricate, toothed to subentire, oblong, 5 
to 8 mm wide, inequilateral, the base cordate, or rounded on the lower 
side and auricled on the upper side. Sori large, in a row midway between 
the midrib and the margin; indusium broad, opening toward the apices 
of the pinnae. 
Not uncommon in cultivation in Manila; widely distributed in the Phil- 
ippines at medium and higher altitudes. Tropics generally. 
*3. N. FLOCCIGERA (Blume) Moore, var. MONSTRUOSA Hort. 
Tufted, the stipes furfuraceous, the rachis and pinnae furfuraceous 
and more or less densely villous with weak, spreading or somewhat matted, 
rather soft, brown hairs. Fronds oblong, 50 to 90 cm in length. Pinnae 
numerous, lanceolate to oblong-lanceolate, 1 to 2.5 cm wide, deeply and 
irregularly divided into numerous, unequal, close, often imbricate, linear 
r estes sdsdatedk af light faced type are Sntopaneell’ stil those marked 
with an mee are cultivated only. 

