576 
VAUGHAN MACCAUGHEY 
It will be noted that this list, which includes practically all of the 
important species of this region, comprises the following groups: 
Species 
Endemic. ii 
Indigenous 29 
Introduced by primitive Hawaiian s . 15 
Introduced since the advent of 
Europeans 115 
Hydrophytes 9 
Hygrophytes 6 
Mesophytes 82 
Xerophytes 56 
Vines or lianas 18 
Pteridophytes .- 8 
6. MANOA STREAM 
The surface drainage waters of Manoa escape as a single small and 
fluctuating brook, known as Manoa Stream. A very considerable 
percentage of the Manoa drainage makes its way to the sea through 
Fig. 7. Manoa stream near its mouth. The trees are Prosopsis juliflora. In 
the distance is the west lateral ridge, with Round Top and Tantalus showing dis- 
tinctly. 
subterranean channels; this is a condition universal throughout the 
islands. Manoa Stream is fed by numerous tributaries, which enter 
