422 The Philippine Journal of Science 1914 
is represented by a few plants which appeared to be commencing 
their development in December, 1913. There were a few small 
plants of the tomato, Lycopersicum esculentum, three plants of 
the peanut, Arachis hypogaea (one with partly ripe fruit), a few 
plants of cassava, Manihot utilissima, a single plant of rice, Oryza 
sativa, and one of sincamas, Pachyrrhizus erosus. 
While the Bambusa-Parkia association may well be considered 
the logical climax association for the lower altitudes, it is not 
the climax for the higher altitudes on the voleano. There is as 
yet no evidence, however, indicating the steps nor the climatic 
type of vegetation, toward which succession leads. 
ANNOTATED LIST OF SPECIES FOUND ON TAAL ISLAND SINCE THE 
ERUPTION OF 1911 
PTERIDOPHYTA 
POLYPODIACEAE 
Adiantum philippense L. 6772. Local in a deep ravine, Mount Ragatan. 
Nephrolepis biserrata Schott 7378. Local in ravine, Mount Pirapiraso. 
Odontosoria chinensis J. Sm. 6849, 6850, 7341. In ravines. 
Onychium siliqulosum (Desv.) C. Chr. 6762, 6880, 7378, 7447. Ravines 
or rocky bluffs. 
Pteris longifolia L. 6769, 7376, 7450. On rocky bluffs or ravine sides; 
not common. 
Pteris quadriaurita Retz. 6776, 7346. Local in a deep ravine, Mount 
Ragatan. 
Pteris sp. 6765. In a deep ravine. 
SCHIZAEACEAE 
Lygodium japonicum (Thunb) Sw. 6760, 7328, 7435. Local in ravines; 
not common. 
SELAGINELLACEAE 
Selaginella sp. 6758, 6882. Local in a few ravines, north side. 
SPERMATOPHYTA 
PANDANACEAE 
Pandanus tectorius Sol. 6851. Four plants, two of which were found 
on the strand and two on an ash ridge. 
HYDROCHARITACEAE 
Vallisneria gigantea Graebn. 6703. Submerged aquatic; northern parts. 
GRAMINEAE 
Bambusa blumeana Schultes f. 6730, 7457. On bottoms and sides of 
ravines, northeast cape and at the foot of Mount Balantoc. 
Cynodon dactylon (L.) Pers. 6805, 7409, Local on wet strand in the 
northern parts. 
