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spread horizontally for some distance and then they may become upright 
if the necessary support is present. Many branches recline on the 
ground, in which case movements of soil or gathering of vegetative 
débris may cover these branches, which then may root at the nodes, and: 
thus, in case older parts are destroyed, new centers originate. While 
Dinochloa diffusa was found in fruit during the two summers under 
observation, yet very few seedlings were noted; consequently its seedling 
condition remains yet to be investigated. It will be seen from the above 
that Dinochloa diffusa is well fitted to invade clearing habitats from 
surrounding places by means of its diffuse habit, or, if already present, 
it may form dense growths more rapidly in case there is any disturbance 
in its own habitat. If its tall support is removed, its reclining portions 
lie prone on the ground or near the ground, if the underbrush is able 
to support it. In the case where the shrubby vegetation is sufficiently 
strong to hold the reclining portions above ground, a roof is formed under 
which one may, by maneuvering, find a way through, because the shade 
is so dense that practically no new plants are able to gain a foothold. 
If the weight of the roof beconres so great that the shrubs or small trees 
supporting it are broken, then the Dinochloa roof in places rests on the 
ground. In this condition it is so jungle-like that it is very nearly im- 
possible to penetrate without the use of a knife. Especially is this 
the case when growing with the Dinochloa there is a climbing palm 
(Calamus). All through the Bambusa-Parkia formation Calamus mollis 
major,2> called “uay” by the natives, is found scattered. Especially when 
relieved of its support, portions of it lie recumbent or are intertwined 
among the branches of the Dinochloa. 
The north ridge of the reserve from the sea coast to a distance of 2 
kilometers inland shows the best development of this climbing bamboo. 
Here isolated trees of the Bambusa-Parkia formation, especially Parkia, 
Albizzia, and a few clumps of Bambusa lumanpao, are found. Some 
places show the entire absence of the Dinochloa and simulate the more 
shrubby parang to be described below. ‘The species accompanying 
Dinochloa are practically the same as those found in the other types of 
parang, excepting that they are more scattered where the Dinochloa is 
thickest. Indeed, no continuous stretches of the Dinochloa parang 
prevail, but, rather, patches of it are encountered alternating with areas 
of other types. There is no doubt that the Dinochloa parang is found 
in places where artificial conditions have not been made. In that case 
*'The species of the genus Calamus known as rattan or climbing palms go 
under the Spanish name “bejuco” by the natives, who have individual names for 
the different species. Because of their economic importance the natives are 
especially keen in distinguishing them. Many of the species have not been scien- 
tifically determined and such species will be designated by their common names 
with the understanding that these names have no general application, for they 
may differ in the various provinces. 
