CHEISTENSEN — FERNS OF SEYCHELLES AND ALDABRA 421 



nucla. Vence plerutuque fiircatse, intra marginem callosam apicibus subclavatis 

 (lesiuente. Lamina fertilis similis, 15-17 cm. longa, 2 cm. lata, stipite loagiore 

 (10 era.). 

 Mahe, Some, 171 ! (type), Gardiner ! Silhouette, 2000 feet, Gardiner ! 

 1 cannot agree with Baker in regarding this as a variety of J^. petiolatum. It differs 

 from that species in its much larger leaves, its glabrous surfaces, and the different scales 

 of the rhizome. In ^. petiolaium the scales are dark brown, glossy, very narrow, and 

 nearly hair-like. In general habit our new species resembles not a little E. jlaccidum. 



68. Elaphoglossijm petiolatum (Sw.), Urb., var. salicifolium (Willd.). — Acrostichum 

 saUcifoliiim, Willd. A. viscosum, Baker, Fl. Maur. 512. 



Mahe and Silhouette, Gardiner ! ; apparently common. 



Most specimens are rather densely clothed all over both surfaces with minute pseudo- 

 stellate scales. 



E. petiolatum type is common in tropical America ; the variety is frequent in the 

 South-east African islands, and Kuhn refers specimens from tropical West Africa to it. 

 Very similar forms occu.r in Sovithern China and the Himalaya {A. neriifolimn. Wall.). 



69. Elaphoglossum spathulatum (Bory), T. Moore; C. Chr. Ind. 316. — Acrostichum 

 spathiilatum, Bory ; Baker, Fl. Maur. 512. 



Mahe, Home (fide Baker, not seen). 



Distribution. South Africa with the adjacent islands, Ceylon, tropical America. 



70. Aceostichijm aureum, Linn. ; Baker, Fl. Maur. 514; C. Chr. Ind. 5. 

 Seychelles; Mahe, Gardiner \ Silhouette, Gardiner \ Bird Island, i^/'?/er! Aldabra 



Group, near Pte. Hodoue, R. Diipont, 36 ! 



71. Platyceeium bifurcatum (Cav.), C. Chr. Ind. 196. — P. alcicorne, Baker, Fl. Maur. 



515. 

 Seyclielles (fide Baker, not seen). 



East Africa and islands, Australia and Xew Caledonia, Lord Howe Island. 

 As suggested in my ' Index,' it is uncertain whether this East- African Blatycerium is 

 the same as the true P. bifurcatum from Australia. 



PARKEKIACE^. 



72. Ceeatopteris thalictroides (Linn.), Brongn. ; C. Chr. Ind. 169. 



Mahe, Anse Boyale, and Tern^, Gardiner ! Silhouette, Grande Barbe, Gardiner ! 



New to the Seychelles. The true C. thalictroides is widely distributed through the 

 Old World tropics, and according to Benedict (Bull. Torr. Club, vol. xxxvi. (1906) 469) 

 it is probably confined to the Old World, the American forms belonging to three 

 different species. 



