422 



PERCY SLADEN TRUST EXPEDITION 



GLEICHENIACE^. 



73. Gleichenia linearis (Burm.), C. B. Clarke; C. Chr. Ind. 322. — G. dichotoma, 

 Baker, Fl. Maur. 460. 



Mahe, Silhouette, and Long Island, Gardiner ! 



Common through the tropical and subtropical regions of the Old World, and closely 

 related forms occur in tropical America. 



SCHIZ^ACE^. 



74. ScHiz^A DiGiTATA (Einn.), Sw. ; C. Chr. Ind. 616. — S. digitata, var. intermedia 



(Mett.), Baker, El. Maur. 516. 



Mab6, Gardiner ! 



This is the genuine S. digitata, a species widely distributed through tropical Asia and 

 Polynesia, but, so far as Africa is concerned, known from the Seychelles only. The 

 locality Madagascar is doubtful. Baker referred the Seychelles specimens to S. inter- 

 media, a species from New Caledonia distinctly different from S. digitata by having the 

 sporangia intermixed with long paraphyses. 



MARATTIACE^. 



75. Marattia fbaxinea, Sm. ; C. Chr. Ind. 414. 

 Mah^, Gardiner ! New to the group. 

 Distributed through the tropics of the Old World. 



76. Angioptekis evecta (Forst.)^ Hoffm. ; Baker, El. Maur. 517. 

 Mahe and Silhouette, Gardiner ! 



Widely spread through the Old World tropics. 



OPHIOGLOSSACE^. 



77. Ophioglossum pendulum, Linn. ; Baker, Fl. Maur. 517 ; C. Chr. Ind. 471. 

 M.d.\iQ, Gardinerl Thomassetl Silhouette, Gardmer ! Apparently common. 

 Tropical Asia, Australia, and Polynesia, the South-east African islands, but not known 



from the African continent. 



78. Ophioglossum palmatum, Linn. ; Kuhn, Eil. Afr. 178 ; C. Chr. Ind. 471. 

 Seychelles, Ferville (fide Kuhn, not seen). 



Florida and tropical America ; Madagascar, Reunion, and Seychelles. 



EXPLANATION OF PLATE 25. 



Fig. 1. Asplenium complanatum, natural size. 



2. Portion of pinna enlarged, showing sori. 



3. Sporangium, enlarged. 



4. Elaphoglossum Hornei, natural size. 



Fig. 5. Portion of frond, showing venation. 



6. Part of fertile frond, enlarged. 



7. Sporangium, much enlarged. 



