A SUPPLEMENT TO THE PTERIDOPHYTES AND PHANEROGAMS OF JUAN FERNANDEZ 765 



38. Pteris semiadnata Phil. C. CiiK. & Skottsb. 1.34. 



Add Masatierra: suimnit quebrada of ICl Vunque, Tenz no. 2 (Herb. Ham- 

 burg; Skottsb. 5. 158). 



39. Pteris Berteroana Ag. C. CiiR. & SKOTTSB. 1.34. 

 Add Masafuera: (J. Angosta, in the gorge. 



42. Polypodium intermedium CoUa; C. ClIR. & Skottsh. 1.37. 

 I. typicum var. basicompositum n. var. 



A P. inlcrvudio typico dififert pinnis basalibus pinnatis. 

 Masatierra: XE. slope of El Vunque (no. 154 B). Accidentally omitted I.e. 

 — Xo. 318, mentioned p. 38 as an aberrant rock form corresponding to var. 

 basicompositum of subsp. masafueranum is better referred to this in spite of the 

 locality in ^Masatierra, as already suggested 1. c. 



43. Polypodium Masafuerae Phil. Linnaea 29 (1857) 107. P. pychnocarptim 

 C. Chr., C. Chr. & Skottsb. 1.41. See I. M. Johnston in Contrib. Gray Herb. 



85 (1929J 14 and Looser 6, 7. 



[Baker, On the Seychelles Fern Flora (Trans. Irish Acad. 25, 1875, 516) 

 cites Polypodium serrulatum (Sw.) Mett. from Juan Fernandez, a statement repeated 

 by Christensen and also by DiELS in Xatiirl. Pflznfam. Chrtstensen must have 

 forgotten this reference when we compiled our joint paper, and the species is 

 not mentioned by JOHOW or LOOSER. Maxon 1. c. showed that the name is 

 illegitimate and replaced it by P. duale Maxon. This, the true Acrostichum 

 serrulatum Sw., is widely distributed in tropical America and also known from 

 West Africa, Madagascar and Mauritius. Its occurrence in the Seychelles is 

 confirmed by typical specimens collected by Dr. JOHN ERIKSSON during the 

 Swedish Deep Sea Expedition 1948 (Herb. Gotob.). On my request Mr. F. BAL- 

 LARD went over the material at Kew and found a specimen mounted with several 

 others from various places and labelled in W. J. HoOKERs hand '"Juan Fernandez, 

 Capt. Woodd". This name is not in the list of collectors in Juan Fernandez 

 published by JOHOW, but we can hardly expect this list to be complete. Mr. 

 Ballard, in arranging that I received the sheet on loan, expressed his serious 

 doubt that the specimen said to have come from Juan Fernandez really belongs 

 to P. duale, while it bears great resemblance to P. myosuroides Sw., and to judge 

 from what I have seen of this (good material in Herb. Stockholm) I think that 

 it belongs to this species, whereas other specimens on the Kew sheet clearly 

 represent duale. Maxon credits myosuroides to Jamaica only, and its occurrence 

 in Juan Fernandez is surprising. :\Iixed with the WoODD plant are a few Bryo- 

 phytes. Thinking that they could perhaps give a clue to the origin of the fern, 

 I asked Dr. Th. Herzogs opinion; I thank him for liberal assistance. The 

 sample contained a species of Herberta, not identical with the species known 

 from Juan P'ernandez. but belonging to a tropical group, and a Dicranacea of 

 the genus Holodontiuin; this latter moss is, according to Dr. HER^LAN Persson, 

 quite different from all Dicranaceae found in either Juan Fernandez or the West 



