250 



level places. The most common Javanese species seems to 

 be A. qlauca }. Sm. which is spread throughout the moister 

 regions of the island from the plains up to an altitude of 

 - 1800 m., especially above 600 m. The reproduction of all 

 Javanese tree-ferns is exclusively effected by spores. 



Collected at an altitude of 400 m. In 1908 Demmeni 

 had already seen 3 specimens of a tree-fern (genus unknown) 

 at an altitude of 600 m. Before 1919 the son of Mr. Handl 

 (Cf. Chapter X, p. 197) had observed tree-ferns at a height 

 of 600-700 m. 



Polypodiaceae. 



3 (52). Dryopteris megaphylla C. Chr. 



Terrestrial fern with a short rhizome spread throughout 

 the moister parts of West- and Central Java between 250 

 and 1500 m., in jungles, grassy wilds and secondary forests. 

 The reproduction is effected by spores. 



According to the Dutch text occurring up to an altitude 

 of 400 m., but according to the English text from 200 

 feet ( b 60 m.). 



4 (53). Dryopteris sctigera O.K. See p. 57, sub No. 8. 



Collected in the lower ravines. 



5 (45). Aspidium melanocaulon B/. 



Kremnophytic fern with a short rhizome, spread throughout 

 the moister regions of Java between 250 and 1000 m- above 

 sea-level, on humid, well-shadowed steep banks, especially 

 on water-sides and in hollow roads. The reproduction is 

 effected by spores. 



Collected in the lower ravines. 



6 (58). Nephrolepis biserrata Schott. See p. 234, No. 2 (81). 



Collected in the lower ravines. 



7 (59). Nephrolepis exaltata Schott. (= N. hirsutula Presl). See 



p. 56, No. 6, further also 6 and p. 235, No. 3 (82,83) 

 herebefore. 



Collected ,,from the beach to the summit". The Dutch 

 text adds: ,,but mostly in little shadowed localities". 



8 (49). Davallia sp. 



The genus Davallia, possessing long creeping rhizomes, 

 is in Java from the plains up to high in the mountains 



