CYATHEACEAE 



63 



possibly pendant epiphytic mosses and hepatics, but his figure, 

 and his description at least in most part, apparently refers to 

 Usnea or to some very closely allied genus. His material was 

 from the higher mountains of the interior of Amboina. 



PTERIDOPHYTA 



The entire Amboina collection of this group, made by Doctor 

 Robinson, has been critically studied by Capt. C. R. W. K. van 

 Alderwerelt van Rosenburgh, of Buitenzorg, Java.* In pre- 

 paring the present consideration of the species described by 

 Rumphius I have had the benefit of his published work, both as to 

 the names of the various species under the binomial system, and 

 as to the identity of the forms Rumphius named and described. 

 In a few cases I have made changes in nomenclature, but in no 

 case, except Cyathea, involving new combinations. 



CYATHEACEAE 



CYATHEA Smith 



CYATHEA RUM PHI AN A (v. A. v. R.) comb. nov. 



Alsophila rumphiana v. A. v. R. in Philip. Journ. Sci. 11 (1916) Bot. 

 104. 



Palmifilix alba Rumph. Herb. Amb. 6: 63. 

 Amboina, Hitoe messen, Robinson PI. Rumph. Amb. 463, October 14, 

 1913, in light forests, altitude about 175 meters. 



Doctor Robinson, who had the opportunity of examining this 

 tree fern in the field and of making a direct comparison with 

 Rumphius's description, considers this identification of Palmi- 

 filix alba Rumph. as certain. 



CYATHEA AM BOI N ENSIS (v. A. v. R.) comb. nov. 



Alsophila amboinensis v. A. v. R. in Philip. Journ. Sci. 11 (1916) Bot. 

 103. 



Palmifilix nigra Rumph. Herb. Amb. 6: 63 (t. 27?). 

 Amboina, Hatiwe and'Soja, Robinson PI. Rumph. Amb. 464, 465, August 

 and September, 1913, in forests, altitude 300 to 400 meters. 



The only previously suggested- reduction of Palmifilix nigra 

 Rumph. is that of Henschel and Pritzel, who referred it to Cya- 

 thea arbor ea Sm., a species of tropical America. The reduction 

 made here is probably the correct disposition of Palmifilix nigra 

 Rumph. The illustration, however, may belong to any one of 

 the three forms described in this chapter, the particular one 

 intended not being indicated by Rumphius. 



* The Amboina Pteridophyta collected by C. B. Robinson. Philip. Journ. 

 Sci. 11 (1916) Bot. 101-123, t. 5, 6. 



