KEY TO GENERA 257 
are equipped with musical instruments constructed of bamboo. 
These pieces are of the same general character as brass instru- 
ments and include horns, clarinets, flageolets, saxophones, flutes, 
piccolos, and drums. A church in Las Pifas, a few kilometers 
from Manila, has a famous organ with bamboo pipes. 
For construction purposes bamboo should be cut a year after 
it has reached mature size and after the rainy season; that is, 
in most parts of the Philippines, after November. If cut during 
the rainy season the culms are full of sap, which soon attracts 
small beetles in great numbers and these rapidly destroy the 
bamboo. In practice, newly cut bamboo is often kept in water 
for several weeks in order that the sap, or at least the sugar 
and starch contents of the sap, may be eliminated. Filipino 
bamboo carpenters say that when flies gather around the newly 
worked bamboo, it is a sign that this bamboo is not durable. 
The flies, of course, are attracted by the sugar in the bamboo. 
Owing to the wide distribution of bamboo and the ease with 
which it is worked without any special implements, it offers 
a promising field for the development of local household in- 
dustries for the manufacture of various useful and ornamental 
articles. If this industry were developed, no doubt considerable 
export trade could be secured. 
Key to the genera of Philippine bamboos. 
1. Climbing. 
2. Flowers in widely scattered, dense, globose heads; rare, known 
Onikyschronay Min dono seen eee ee eee Cephalostachyum. 
2. Flowers not in widely scattered, dense, globose heads. 
Swplikeletsaverny small) wovates. =. 0) os ee ee Dinochloa. 
3. Spikelets elongated, linear or linear-lanceolate. 
Schizostachyum. 
1. Erect. 
2. Two and a half meters in height or less, only on high mountains, 
Asi Co ade 2 eter US 2a opi a ee een eS = PSE Dae id Arundinaria. 
2. Clumps one to three meters in height, leaves small and whitish, 
Guibert OMiliy nx ees ee sts ee Bambusa glaucescens. 
2. More than 3 meters in height. 
3. Base of clump protected with long, interlaced, spiny branches. 
Bambusa spinosa. 
3. Base of clump not protected with long spiny branches. 
4. Culms thin walled; mostly small or medium sized bamboos, 
5. Keels of palea broadly winged; rare, known only 
EGOS MIN GANA Ol eo cece oe ee ee Guadua. 
i; LEM Ker. satole \yipboleqeo le ee Schizostachyum. 
4. Culms thick walled; mostly large bamboos. 
5. Pericarp thin, adnate to the seed. 
6yeEilaments ‘freer sa. 6 eee eee Bambusa. 
6. Filaments connate in a thin tube... Gigantochloa. 
5. Pericarp fleshy or crustaceous, separable from the 
S@@d) . 3. fi. oo ere ee ee ee eee Dendrocalamus. 
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