258 PHILIPPINE BAMBOOS 
DESCRIPTION OF SPECIES 
Genus ARUNDINARIA Michaux 
ARUNDINARIA NIITAKAYAMENSIS Hayata. Urop. 
Among the Igorots, this bamboo is known as utod. It is 
the only representative of the genus found in the Philippines. 
This species was originally described from the mountains of 
Formosa, and is known only from Formosa and the mountains 
of Luzon. It is locally very abundant, forming dense thickets, 
at altitudes from 2,100 to 2,600 meters in the Mountain Province, 
Luzon. This bamboo reaches a height of 2.5 meters, but in 
unfavorable habitats is frequently only a few centimeters in 
height. Its maximum diameter is about 1 centimeter. Its only 
recorded use in the Philippines is for pipestems. A flowering 
specimen is shown in Plate II. 
Genus BAMBUSA Schreber 
1. Culms unarmed. 
2. Small shrubby species 2 to 3 meters high with glaucous leaves. 
B. glaucescens. 
2. Coarse species of tree size. 
3. Leaf-sheaths with rounded auricles..........................:.. B. vulgaris. 
3. Leaf-sheaths with hornlike, erect processes. 
4. Leaves large; spikelets glabrous; keels of the palea not 
PEON SMG liyger el NA ace a ee eee eee B. cornuta. 
4. Leaves small; spikelets densely hirsute; keels of the palea 
promumenbly ciliate. ....22.0.. 3.03 ee ee ee B. merrillii. 
I, Galmsi Spay 9. coe eee heat Oe cee kt Le. oe ee eee as B. spinosa. 
The genus Bambusa is represented by five species, of which 
at least three appear to have been purposely introduced. It 
includes the most valuable single species of the entire group 
in the Philippines. With one exception, all of the species have 
large, tall culms. 
BAMBUSA CORNUTA Munro. Lopa. 
Local name: Lopa (Isinai). 
Rare in the forests of Nueva Vizcaya and Benguet, known 
also from Java. An erect bamboo reaching a height of 7 to 8 
meters, and a culm diameter of 3 to 3.5 centimeters, with inter- 
nodes 40 to 45 centimeters long. It is characterized by promi- 
nent horns at the tip of the leaf sheath. A flowering specimen 
is shown in Plate III. 
BAMBUSA GLAUCESCENS Sieb. KAWAYAN-CHINA. 
Local names: Kawdyan-china, kawdyan-sina (Tagalog). 
Kawayan-china is a native of China or Japan and occurs 
in the Philippines only as an introduced and cultivated plant. 
