62 USEFUL PLANTS OF GUAM. 
be said to be comparatively simple with the trees of temperate climates, where forests 
are comparatively open and frequently composed of only a few kinds of trees or, 
perhaps, of a single species. In the Tropics a natural forest of one species is practi- 
cally unknown; hundreds of kinds grow indiscriminately mixed together. Crowded 
together in tropical forests trees have nothing like the shapes or habits they would 
assume if standing alone. All are putting forth, as it were, their best efforts to grow 
talhand thus secure as much sunlight as possible. Their leaves and branches are 
inextricably confused, interlaced with climbing plants, and encumbered with para- 
sites and epiphytes. To cut down a particular tree may be impossible unless one is 
willing to clear a large neighboring area to permit it to fall. Unless the botanist 
finds a clearing his opportunities for securing even the desired fragments of branches 
with leaves, flowers, and fruit may be extremely few. Hence, our knowledge of 
tropical trees is still in the early pioneer stages.¢ 
Among the trees mentioned by Gaudichaud under their vernacular 
names are the ifil, fago, adban, chopag, chuti (tchiuti), seyafi (sidjiafi), 
kadela, langiti, hodda (odda), tagete (tagaiti), nunu, hayun-lago; and 
in the list of woods forwarded by Governor Olive to the captain -gen- 
eral of the Philippines are agatelang, agaliyan-halomtano, aguanac, 
ahgao, alom, amahayan, afgilao, aplokhating, brea, chosg6, faka, fago, 
La 
fatiog, giusale, guaguaot, gulos, hayunmananas, hayun-palaoan, lalaha, 
lalanyog, langiti, lafia, lenaya, luluhut, makupa, mahlokhayu, mapufao, 
nimo, holon, pacpac, palma brava, panago (or banalo), pengua, kelitae 
(or palaga-hilitae), sayafo (or seyafe), sumai, sumaclacla, umumo, yoga. 
Only a few of these trees have been identified. Good specimens of 
all are desirable for herbaria. 
Among the unidentified shrubs are several species which Gaudi- 
chaud referred to the genus Pavetta, called by the natives ‘* utud,” 
“otud” or “utug,” ‘sesbu” or “sosbu,” anc *‘guaguabug.” Another 
shrub not yet determined, having a disgusting fetid odor and flowers 
growing in axillary and terminal umbels, is called by the natives 
** pau-dedo.” 
GROUPS WHICH ARE NOT WELL KNOWN. 
Certain families of plants have not been well worked up, such as the 
Apocynaceae, Rubiaceae, Verbenaceae, Urticaceae, and Euphorbiaceae. 
Among the first there are certain seaside shrubs allied to Cerbera 
referred to by Gaudichaud under the name of Rauwolfia and Plumiera. 
One of these is probably Ochrosta mariannensis, but the others are not 
yet known. Among the Rubiaceae are several small shrubs allied 
to the genus Ixora. Among the Verbenaceae the Guam plants belong- 
ing to the genera Premna and Vitex should be compared with series 
from other localities, and it is probable that there is a second species 
of Clerodendron, with bitter leaves, which has not yet been recorded. 
There are several species of Phyllanthus, Euphorbia, and Glochidion 
which have not yet been collected as well as a few M yrtaceae. 
“Cook, Culture Central American Rubber Trees, U. 8, Dept. Agr., Bur. Plant 
Industry, Bull. 49, p. 18, 1903, 
