647 
TanLeE X X—Continued. 
- "meme ) am | 
Name of plant. Hi) ara tare a a 0 D. | E. | K. | 
GR CURE OMIB EW &o22 Sec. oscus dese aes 5 Te nce nace pe a | 1 [esha 
Béewerin. sp en peer Eeaer teed Seen ee 1 1 jae ae | 
55. Eugenia glauciealyx .......__.._»_.-....-__.|..--__._|_...._- 1 Senta re § Sh Paes ees | 
56. Fagara integrifoliola _.____2.---._...-------- a [Saati Sees | 1 | 2 et 
57. Helicia 6A a eases ee ee p By) Ce eae ie tseess fale 
58. Litchi philippinensis -______-_.______________]__--____- oe | sy ee j hil ea RES 
o&. Euphorbiaceae sp .......-.........-.-_-.-..- | Fas eee lene See Es yg es ca 
| 60. Mangifera altissima _______------------------ {| soe aide! | Lae | sf Eoeoee See 
6 Limociera coriacea .=-. 2... 42 cose |i s ear ee. eon ae gy bee ae 
62. Podocarpus neriifolius _---------_--- ---- steers | 1 | agai Se ahs ne ee 105 [Eee Baie | 
63. Pygeum latifolium —____.-__----- lence Joe pee eee | fea a 1 rh eee Eee 
id. Steroulia brevipetiolata ....-.2-.2522.-2.---}--------}- 3 eee a uf nbs pean ae | 
HOES LOO NSE: AE UES SC a cto a hie sees od a en 1 | A ie eaten, Se | 
66.-Sideroxylon :duclitem <2 222252 22. s aka es Sake elena | 5 I peered i Foes Peer 
67. ‘Tarristic Bylvatles. 2 2 fee n | jie eee Ss | i I eee oe 
TRANS, wcinsou setae ae oc Dae Bae ee: bos ger the: 
| | | 
Composition of the forest——An examination of Tables XIX and XX 
will show that among the trees of the upper crown class the Diptero- 
carpacee, represented by Shorea polysperma, S. contorta, Hopea acum- 
inata, and scattered specimens of Dipterocarpus vernicifluus, Anisop- 
tera vidaliana, Shorea guiso, and Vatica mangachapoi, comprise about 
16.5 per cent of all and reach to a height of 25 to 30 meters. Species 
of Hugenia,*® although present in the lower formation, become more 
prominent in this one. In some instances they reach to the height of 
the dipterocarps, but usually they are considerably lower in stature; 
about 10 per cent of the forests are composed of species of Hugenia 
and among others having individuals of this class are Quercus (about 
two species), Calophyllum whitfordti, C. wallichianum,*® Santiria nitida, 
Agathis philippinensis, Gordonia fragrans, and isolated specimens of 
other ones. Agathis philippinensis (almaciga) of the Pinacew reaches 
huge dimensions, being in many instances 40 meters in height and 
nearly 2 meters in diameter. (See Pl. XXV.) 
Memecylon edule, Diospyros pilosanthera, Aporosa symplocosifolia, 
Thea montana, Acer philippinum, and Litsea luzonica are the principal 
representatives of the under-story species. Certain families, some of 
which are present in the lower formations, now occur with a greater 
number of species and individuals. Among these, species of Rubiaceae 
stand out prominently. Besides Plectronia viridis, which gives a decided 
tone to the undergrowth, there are Timonius arborea, Randia whitfordii, - 
R. fitzalani, and Nauclea philippinensis, which reach a height of over 4 
“The species of Lugenia are difficult to distinguish by leaf specimens, hence 
specific determinations have not been made in all instances. 
“The two species of Calophyllum overlap each other in their distribution at 
the lower limits of this and the upper limits of the previous formation. 
