516 The Philippine Journal of Science 
PLATE XV 
Fic. 1, In the center of the Tarlac swamp after the crest of the flood. The 
water is 1 m deep, while at the time of the crest it was 1.6 m deep. 
The bushes are Sesbania cannabina Pers. in fruit, but illustrating 
the usual very open growth. A vine, Merremia gemella, Hallier f. 
is also shown. October 31, 1914. 
2. A part of the stem of a plant of Sesbania showing the root clusters 
and the aerenchyma developed under water during the flood. 
October 31, 1914. 
3. From the railroad looking into a part of the Hrythrina-Barringtonia 
swamp forest. Notice the abundance of vines, both in the woods 
and in the openings towards the right and in the foreground. 
At the foot of the large tree, Erythrina fusca Lour., are large 
aroids, Alocasia macrorrhiza Schott. March 9, 1913. 
