FOEEST TREES AND FOREST REGIONS OF THE U. S. 51 



at home and exported, it has been extensively cut. Kukui is an 

 abundant tree, deriving its English name "candlenut" from the oil 

 in the nut, which the natives formerly used for illumination. ^ One or 

 more native species of the true sandalwood, known as "iliahi", have 

 been cut and exported to such an extent that the trees are relatively 

 very scarce. 



The first four trees listed below are of much importance in the 

 forest, while the others mentioned are only a few of the 200 or more 

 native species on the islands: 



HAWAIIAN FOREST TREES 



Ohia lehua (Metrosideros polymorpha) 

 Koa (mahogany) (Acacia koa) 

 Mamane (Sophora chrysophylla) 

 Kukui (candlenut) (Aleurites triloba) 

 Koaia (Acacia koaia) 

 Kopiko (Straussia oncocarpa) 

 Kolea (Suttonia spathulata) 

 Naio (false sandalwood) (Myoporum 

 sandwicensi) 



Pua (Osmanthus sandwicensis) 



A'e (Xanthoxylum kauaiense) 



Lama (Maba sandwicensis) 



Alaa (Sideroxylon auahiense) 



Iliahi (sandalwood) (Santalum frey- 



conetianum) 

 Algaraba (mesquite) (Prosopis juliflora) 



(native of southwestern United States 



and extensively planted) 



TREE LABELS 



Tree names are of interest to adults but probably even more so to 

 young people. A suitable label on a tree performs a useful service 

 by furnishing ready information to the curious passer-by. Inquiries 

 are frequently received by this Department as to desirable methods 

 of labeling specimen trees. The following method is suggested as 

 simple, attractive, and inexpensive. 



The common and scientific names, and if desired also the natural 

 home or range of the tree, are embossed on pieces of aluminum 

 "tape. " These are then fastened with zinc or brass brads to small 

 wooden blocks cut from ordinary inch boards. Redwood and south- 

 ern cypress stand weathering and hold paint well. The blocks should 

 be beveled deeply on the 4 face edges and 2 holes bored 1 above and 

 1 below the center for taking nails. This allows for considerable 

 growth of the tree without damage to the labels. The blocks are 

 painted black on all sides. A good way might be to dip them in thin 

 paint or dark creosote stain. The dipping can be done quickly by 

 hooking a wire into a hole of one or more of the blocks. If creosote 

 is used it is suggested that the blocks be strung on a wire or cord and 

 soaked for 12 hours. Only galvanized nails should be used, as com- 

 mon nails will cause rust stains. For holding the blocks, tenpenny or 

 twelvepenny nails are suggested, depending on the thickness of the 

 bark, and for fastening the strips on the blocks, brass or galvanized 

 brads. Two suggested designs of tree labels are shown in figure 1 1 . 



The size and shape of the blocks will vary with the number of metal 

 strips used or the amount of wording. A narrow margin is suggested 

 since small blocks are more economical, less subject to weather check- 

 ing, and less attractive as targets. In putting up the labels the nails 

 should not be driven in to the head. This will allow for some growth 

 of the tree without injuring the blocks. A height of 5 to 6 feet up the 

 tree is probably about right for easy reading and for the desired pro- 

 tection. 



