28 



ment stations. Ten stream and ditch measurements were made 

 and about five miles of foot trails cleared of vegetation. 



Oahu — Fifteen stream and ditch and two rainfall measure- 

 ment stations were visited. Eight measurements were made at 

 regular stations and 20 miscellaneous ditch measurements were 

 made. 



Mmii — Nothing was done on Maui except to keep clock driven 

 water registers in operation. G. K. Larrison, superintendent, 

 visited Paia, Maui, on October 29-31, and collected ditch run- 

 off data of the East Maui Irrigation Company. 



Haivaii and Molokai — Only rainfall observations were made 

 by cooperative observers. 



A'ery respectfully, 



G. K. Larrison, 

 Superintendent of Hydrography. 



AN ANNOTATED REFERENCE LIST OF THE MORE 



COMMON TREES AND SHRUBS OF THE 



KONAHUANUI REGION. 



By Vaughan MacCaughey, College of Hazimi. 



The following list was originally made for use in the author's 

 courses in dendrology and in general botany, in the College of 

 Hawaii. It includes all of the commoner species of native trees 

 and shrubs found in the forested mountains back of Honolulu. 

 These mountains, of which Konahuanui is largest and highest, are 

 frequently visited for botanical collecting and study, as well as 

 for their scenic beauty. The forest of the mountain range proper 

 is hydrophytic, *'rain forest." The list includes the rain forest 

 and the humid lower forest ; it does not include the dry foothills 

 and other xerophytic districts. Professor John S. Donaghho of 

 the College of Hawaii has prepared a large map of the mountains 

 back of Honolulu, showing contour intervals and trails. 



The arrangement is alphabetical, with cross-references, giving 

 botanic, Hawaiian and English names. The localities given 

 under each species are typical or representative regions ; the 

 great majority of the species are abundant all along the Koolau 

 mountain range, from Niu and Wailupe west to the forests 

 mauka of Kahuku. The list has proved of distinct use for refer- 

 ence purposes, and may be of interest to readers of the Forester. 

 Aalri — See Dodonea. 



Acacia Koa Gray — Koa; abundant in the lower and middle por- 

 tions of the Koolau forests ; occurring plentifully along 

 ridges of Tantalus, Kalihi, Hillebrand's Glen, Pohakea, Pa- 

 lolo. (Legume family.) 

 Ae — See Zanthoxylum. 

 Aha-kea — See Bobea. 



