PLANTS OF SPECIAL INTEREST. 61 
Among the rarer trees are Delonix regia, the magnificent flam- 
boyant; the cabo-negro palm (Suguerus pinnatus); Coeclococeus amica- 
yum, the ivory nut palm of the Caroline Islands (PI. XLV); the candle 
nut (Aleurites moluccana), called “ kukui” in Hawaii, but here known 
by its Philippine name, ‘lumbang;” Pangeun edule, called ** pangi” 
in the Philippines and ‘‘rauel” or ‘‘rauwell” on the island of Yap; 
the jujube tree (Zizyphus jujuba), here called ‘*manzanas” (apples); 
and Sandoricum indicum, here called by the Malayan and Philippine 
name, ‘‘santol,” the fruit of which has an acid pulp of fine flavor. Of 
the last species I know of but one tree, which grows on the ranch of 
Don José de Leon Guerrero in the district called Lalo. There are also 
one or two date palms, but they have not been known to fruit. The 
occurrence on the island of Canarinim conimune has been recorded, but 
the writer has not seen this species. This is the tree called in Manila 
‘Sbrea blanca” (white pitch), which yields the valuable resin known in 
commerce as Manila ‘‘elemi” and the nuts called ‘pili,” or Java 
almonds. Polynesian chestnuts (Bocoa edulis), avo rados (Persea 
persea), Japanese loquats (Ariobotrya japonica), and navel oranges 
were introduced by the writer. All of them grew well at first, but the 
avocados were killed by a heavy rain, and it is not known whether the 
others are still living. Two trees of mandarin oranges grow in the 
garden of Don José Herrero in the district of San Ramon, Agana, 
and opposite his house is a vigorous sapodilla tree (Sapota zapotilla). 
The mandarin trees bear very good fruit, but the sapodilla (here called 
chica”) has never borne. The durian (Duro zibethinus), the lanzon 
(Lansium domesticum), so common in the Philippines, and the man- 
gosteen (Garcinia muangostana) do not occur on the island. Grapes 
and the edible fig (/%cus carica) have been introduced but do not 
thrive well. 
PLANTS OF SPECIAL INTEREST. 
UNIDENTIFIED TREES AND SHRUBS. 
Among the trees and shrubs of the island there are a number men- 
tioned by early collectors and by the Spanish governors in their official 
reports which have not yet been identified. It is a well-known fact 
that many tropical forest trees yielding important commercial woods, 
resins, gums, balsums, and medicines are not yet known to science. 
This is in most cases owing to the difficulty of preparing good botan- 
ical specimens of such plants for the herbarium. In this connection 
Mr. O. F. Cook, of the United States Department of Agriculture. 
writes as follows: 
The size itself makes it dificult to observe a tree as a whole or to bring numerous 
individuals under the eye at once, as may be done with smaller plants. Moreover, 
trees can not be preserved as complete specimens, and only small fragments can be 
accommodated for ready reference in the herbarium. Nevertheless, the task may 
