COSTA-EICAN FEENS. 



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On page 589 of the third volume of this work it is stated that the Kew Herbarium 

 contained only about fifty species of Ferns from Costa Rica. That number has now 

 been increased to 134 by a collection made by Mr. J. J. Cooper, and communicated to 

 Kew by the Trustees of the National Museum, Washington, U.S. This collection of 

 Ferns was obligingly offered to the writer for the purposes of this work, and, as 

 Mr. Baker kindly undertook to name them, the offer was accepted, on the condition 

 that Kew received the first set. Independently of four new species, there are fifteen * 

 in the following list not previously recorded from any part of our territory ; but as the 

 summary and analysis of the flora was all written before the names of this collection 

 were available, they are not included therein. To add them now would involve the 

 alteration of many figures, some of which would almost certainly escape notice ; and 

 such alterations would not materially affect any question concerning the general distri- 

 bution of Ferns ; therefore it appears better to be content with a cross reference to this 

 Supplement. 



Gleichenia pectinata, Presl. 



dichotoma, Hook. ; Hook, et Bak. 



Syn. Ml. p. 15. — Almost universal in 



the tropics. 

 intermedia, Baker ', n. sp., in Journ. 



Bot 1887, p. 24. 

 Cyathea arborea, Sw. 

 divergens, Kunze ; Hook, et Bak. 



Syn. Ml. p. 18. — Colombia to Peru. 

 Hemitelia horrida, B. Br. ; Hook, et Bak. 



Syn. Ml. p. 28. — West Indies and 



Colombia. 

 Hymenophyllum ciliatum, Sw. 



polyanthos, Sw. 



myriocarpum, Hook. 



Trichomanes crispum, Sw. 



rigidum, Sw. 



Dicksonia cicutaria, Sw. 



Hook, et Bak. 



Dicksonia incisa, Me 



Syn. Ml. p. 462. 



rubiginosa, Kaulf. 



Davallia insequalis, Kunze. 



imrayana, Hook. ; Hook, et Bak. Syn. 



Ml. p. 90.— West Indies, Guiana. 



schlechtendalii, Presl. 



Lindsaya trapeziformis, Dry. 



guianensis, Dry.; Hook. etBak. Syn. 



^ Ml. p. 107.— West Indies to Brazil. 

 Adiantum tenerum, Sw. 



patens, Willd. 



cooperi, Baker, n. sp., in Journ. Bot. 



1887, p. 25. 

 Lonchitis pubescens, Willd. ; Hook, et 



Bak.Syn.Fil. p. 12 8.— Widely spread 



in tropical regions. The genus is new 



to our flora. 



* Eeferences to the ' Synopsis Filicum ' and their distribution are added after these species. 



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