388 
LEAFLETS or PHILIPPINE BOTANY [Vor. II. Art 19 
fourteen species new to science, I find in it only 5 species 
already known elsewhere but not reported from the Philip- 
pines; and of these five, only two are really collected here 
now for the first time. Four of these five species are Malayan. 
The other, the plant determined as Gleichenia gigantea, is known 
from India to China; but this will hardly be construed as evidence 
of direct floristic connection with the Asiatic mainland, both 
because its appearance here is far south in the archipelago, 
and because many authors regard G. gigantea as a form of 
the widely spread G. glauca. 
Of Pteridophytes already known within and without the 
Philippines, this collection includes six species not previous- 
ly found north of Mindanao, and eight or nine previously known 
in the Philippines only farther north, but the latter all oc- 
cur in Malaya. 
Of species known only in the Philippines, Mr. Elmer found 
on the Horn of Negros ten which had previously been found 
only in Mindanao, six previously collected only in Luzon, and 
five more which had not before been found as far south as 
this mountain. Beside these there are many species already 
known in Luzon and Mindanao, or Luzon, Mindoro and Min- 
danao, which are now found in this midway locality. These 
and others will no doubt be found on Canlaon in centra] 
Negros, and on Madiaas, in Panay, when the ferns of those 
mountains are collected. 
Mr. Elmer’s field notes are models in the full description 
of the environment, and of such features of the plants as 
might not be shown by herbarium specimens. As a large part 
of our rich fern flora is very local in its occurrence, each species 
having its characteristic kind of place, and as descriptions 
of the habitat are too often neglected, I am glad to 
summarize them, with the respective species, in the enumer- 
ation. For many purposes it is worth more to know that 
a given specimen grew ''On the sheltered side of mossy trees, 
alt. 1800 m.," than to know that it was collected in the 
"Philippine Islands.” 
A notably large proportion of the ferns on the Horn of 
Negros have their rhizomes, or more properly caudices, erect; 
and many of these caudices are reported in the field notes 
