NOTES ON JAPANESE II KPATICK 159 



the uppermost one or stylus a little longer than the others, mar- 

 gin otherwise entire ; innermost bracteole free, ovate, 0.7 mm. 

 long, 0.4 mm. wide, bifid to about the middle with a narrow 

 sinus and acute divisions, margin indistinctly short-ciliaie at the 

 base, otherwise entire ; perianth about half-exserted, obovate in 

 outline, 1.1 mm. long, 0.7 mm. wide, gradually narrowed 

 toward the base, rounded to truncate at the apex, beak short, 

 cylindrical, entire or nearly so at the mouth, perianth com- 

 pressed, but with a distinct, rounded postical keel, narrowing 

 toward the apex, surface smooth; spores brownish, 35// in 

 diameter; male plant not seen. 



Type locality, Mount Konomine, Tosa. Collector, Yoshi- 

 naga (no. 32), November, 1903. Another specimen (cotype) 

 from Mount Ishidachi, Iyo. Collector, Okamura (no. 119), 

 August, 1904. Determination made by Stephani. 



The specific name of the present species probably refers to 

 the crowding of the lobules. This peculiarity is not always 

 apparent on the main stem or on leading branches but is espec- 

 ially well seen on short branches with limited growth (PI. VIII, 

 fig. 15). The crowding of the lobules is accompanied by a 

 change in their position with respect to the axis. Instead of 

 being erect, they tend to become oblique, the inflated ends being 

 more or less appressed to the axis. The underleaves on these 

 branches are sometimes almost hidden by the lobules and are. 

 much smaller and narrower than when normally developed,. 



F. densiloba belongs to the subgenus T/iyopsiclla of Spruce", ■ 

 which includes a large proportion of the tropical Frullaniae. 

 The row of ocelli in the lobes of its leaves and bracts is a 

 character which it shares with many other species of the genus. 

 Of those which occur in Japan, F. appendiculaia Steph., F. 

 111011 il iata Xees and F. makinoana Steph. may be especiallv 

 mentioned. The first 2 of these are more robust than F. den- 

 siloba and are further characterized by their obtusely pointed 

 to acuminate leaves. The third species is somewhat more 

 closely allied but differs in the large and semicircular stylus, 

 which it develops between the lobule and the stem, and also in 

 the broader underleaves, lunately excised at the apex with broad 

 and obtuse lobes. 



