64 A FLORA OF MANILA 
2. S. myosuroides (Kaulf.) Spring. 
A slender, erect or ascending annual, 5 to 15 em high, copiously 
pinnate, the branches compound, the base of the stem with rootlets. 
Leaves of the lower plane spaced, membranaceous, oblong-lanceolate, acute, 
about 3 mm long, slightly inequilateral, light-green, those of the upper 
plane 2 mm long or less, lanceolate, acuminate, appressed. Spikes 1 cm 
long or less, about 3 mm thick, the bracts of the upper plane closely 
imbricated, oblique, lanceolate, as long as and in the same plane as the 
larger leaves. E 
On damp banks, shaded ravines, etc., Guadalupe to San Juan del Monte 
and Masambong, Aug.-Feb.; widely distributed in the Philippines. Endemic. 
3. S. barbata Spring. 
An erect or suberect, somewhat tufted, branched annual from the slightly 
prostrate base, 6 to 15 em high, with rootlets at the base only, pinnate, 
the branches ascending, rather close, the branchlets numerous. Leaves 
of the lower plane spaced on the stem, close on the branches, ovate, acute, 
ascending, about 2 mm long, subequilateral, the base broadly rounded and 
somewhat ciliate on the margins, imbricated on the upper side over the 
stem, the leaves of the upper plane about one-half as large, obliquely 
ovate, acute, appressed. Spikes about 5 mm long, 1.5 mm thick, the 
bracts ovate, acuminate, keeled on the back. ’ 
On damp cliffs, banks of streams, etc., Masambong to San Pedro Macati, 
Aug.—Oct.; of local occurrence in Luzon. Endemic. 
A few forms of uncertain origin are found in cultivation, but these have 
not been considered here. 
SPERMATOPHYTA. PLANTS PRODUCING FLOWERS 
AND SEEDS 
Class I. GYMNOSPERMAE: Ovules naked, not borne in closed ovaries, the 
stigma none. 
7. CYCADACEAE (Cycas or PIToco FAMILY) 
Stout erect shrubs or trees with simple, rarely forked stems, with 
numerous, long, pinnate leaves crowded at the ends. Leaflets numerous, 
somewhat falcate, linear, coriaceous, entire. Flowers dioecious, the males 
in dense terminal, large, peduncled cones, composed of numerous closely 
imbricate, cuneate, long-acuminate, scales, bearing beneath many crowded, 
1-celled anthers. Female inflorescence consisting of elongated, flat, densely 
brown-woolly carpellary leaves (carpophores), more or less crowded at 
the apex of the stem, somewhat dilated above into an entire, toothed, or 
pectinate blade. Flowers consisting of ovules only, 1 to 5 in distant 
notches on each side of the stalk of the carpophyll. Seeds ellipsoid. 
Genera 9, species about 90, in the tropics and south temperate zone of 
both hemispheres, a single genus and 3 or 4 species in the Philippines. 
1. CYCAS Linnaeus 
Characters of the Family as given above. (The ancient Greek name.) 
Species about 16, tropical Asia to Japan southward to Australia and 
Polynesia, 3 or 4 in the Philippines. 
