598, 
VAUGHAN MACCAUGHEY 
during most of the year. Torrential precipitation occurs on both the 
windward and leeward slopes, and averages about lOO inches annually. 
This heavy rainfall has cut the east and west faces of the mountain 
into very steep precipices. The north and east faces are part of the 
famous Koolau pali. The south and west faces are fretted with 
hanging valleys, which debouch into Nuuanu and Manoa Valleys. 
Fig. 14. 
View in the rain forest, showing lianas. Note man's~|^head in center fore- 
ground, indicating height of undergrowth. 
23. MOUNT OLYMPUS 
Mount Olympus (Awawaloa) forms on the summit ridge the eastern 
boundary of the Manoa region. It rises to an elevation of 2,447 feet 
and closely resembles Kona-hua-nui in physiography and vegetation. 
It is covered with the typical rain-forest vegetation; the peak itself 
is wind-swept and the vegetation, like that of all the summit peaks 
and ridges, gives every evidence of very unfavorable life-conditions. 
24. REPRESENTATIVE PLANTS OF THE MANOA RAIN-FOREST 
Group I. Endemic 
la. Trees 
Acacia Koa Gray F 
Antidesma platyphyllum Mann F 
Bobea elaiior Gaud F 
Broussaissia arguta Gaud C 
Charpentiera ovata Gaud C 
Cheirodendron Gaudichaudii Seem.. . .C 
" platyphyllum Seem.. . . R 
Claoxylon Sandwicense Mueller F 
