52 A FLORA OF MANILA 
Very commonly cultivated as a hanging plant, variable in size; throughout 
the Philippines. Tropical Asia and Africa to Polynesia. 
2. A. macrophyllum Sw. 
Rootstock short, covered with linear-lanceolate, acuminate scales. Stipes 
tufted, rigid, erect, brown, glabrous or nearly so, 3 to 30 cm long. Frond 
simply pinnate, oblong in outline, 7 to 40 cm long; pinnae opposite or 
alternate, 2 to 12 on each side, spreading, shortly stalked, subcoriaceous, 
2 to 15 ecm long, 1 to 38 cm wide, lanceolate, long-acuminate, somewhat 
falcate, the base inequilateral, cuneate, the margins sharply and irregularly 
serrate; veins very oblique. Sori in close, long, parallel, oblique lines 
reaching from the midrib nearly to the margin. 
In dry thickets, near Fort McKinley, San Juan del Monte, Masambong, 
ete.; widely distributed in the Philippines. Tropical Asia to Polynesia. 
6. HEMIONITIS Linnaeus 
Erect, terrestrial, tufted ferns with entire or lobed fronds, the fertile 
ones different in shape from the sterile, the stipes not jointed to the root- 
stock. Veins distinct, copiously anatomosing, the sori continuous along 
the veins, reticulate, linear, the indusium wanting. (Greek “mule,” these 
ferns originally supposed to be sterile.) 
Species about 8, in the tropics of both hemispheres, 1 in the Philippines. 
1. H. arifolia (Burm.) Moore. 
Rootstocks erect, the scales linear-lanceolate. Stipes slender, shining, 
dark-brown, with scattered, spreading hairs. Fronds dimorphous, the 
sterile ones elliptic to oblong-elliptic, base deeply cordate, apex rounded, 
entire, 4 to 10 cm long, 2 to 5 cm wide, their stipes 3 to 10 cm long, the 
fertile fronds somewhat smaller than the sterile ones, triangular-ovate to 
elliptic-ovate, obtuse, the base often sagittate, the basal lobes spreading, 
or deflexed, rounded, very prominently reticulate on the lower surface, the 
sori covering the veins; stipes longer than in the fertile fronds, 10 to 30 
em in length. . 
In dry thickets, banks of ravines, etc., Masambong to San Juan del 
Monte; of local occurrence in the Philippines. Tropical Asia to Malaya. 
7. CEROPTERIS Link 
Erect, tufted, terrestrial, finely divided ferns from short, creeping or 
suberect rootstocks, the stipes not jointed to the rootstock. Fronds small 
to medium size, pinnately divided, the under surface covered with a white 
or yellow waxy powder. Sori linear to linear-oblong, along the veins but 
not quite reaching- their tips the indusium wanting. (Greek “wax” and 
“fern.”) 
Species about 8, chiefly in tropical America, 1 introduced in the Philip- 
pines. 
1. C. CALOMELANOS (L.) Underw. ' 
Rootstock short, suberect, with few brown scales, the stipes tufted, 
dark-brown or‘purplish, polished, stiff, angular, 5 to 25 em long. Fronds 
oblong, acuminate, 10 to 50 cm long, bipinnate to tripinnatifid, the pinnae 
4 to 15 em long, lanceolate, the lowest ones the largest, the upper ones 
gradually shorter, somewhat falcate, stalked, pinnate below, pinnatifid 
