410 
MR, C. CHRISTENSEN ON THE FERNS OF THE 
The composition of the fern-flora of the Seychelles is of some interest, because the 
group is situated so far east from the African continent. 
The following table shows the 
SPECIES or WESTERN DISTRIBUTION. 
American species extending 
eastwards to tropica 
Asia: 4 
American species extending 
eastwards to the 
Seychelles: 5. 
Species confined to Africa 
and the South-eastern 
African islands: 10. 
Elaphoglossum petiolatum. 
E. spathulatum, 
Hymenophyllum polyanthos. 
H. ciliatum 
Polypodium serrulatum. 
P. cultratum 
Elaphoglossum martinicense, 
E. latifolium. 
Ophioglossum palmatum. 
Trichomanes erosum. 
Oleandra articulata. 
| Davallia cherophylloides. 
| Stenochlena tenuifolia. 
Pellea Doniana, 
. viridis. 
Pteris atrovirens, 
Adiantum rhizophorum. 
Lonchitis pubescens. 
Vittaria isoetifolia, 
| Hymenophyllum hygrometricum. 
Species confined to the 
South-eastern African 
islands: 6. 
ryopteris strigosa 
D. mauritiana. 
Aspidium pleiotomum. 
Diplazium sechellarum. 
Monogramma graminea. 
ES ENDEMIC IN THE 
SEYCHELLES: 12. 
Cyathea sechellarum. 
opteris Hornet. 
D. Wardii. 
Leptochilus bipinnatifidus. 
Lindsaya Kirki, 
L. Hornet 
Asplenium complanatum. 
| Stenochlena Pervillei. 
Polypodium Pervillei. 
P. albobrunneum. 
Hornei, 
distribution of the different species. Not considerin 
remaining 65 species can be sorted into three group 
I. 9 (44-5) species have their centre in tr 
Spxcres or Eastern DISTRIBUTION. 
Species extending from 
tropical Africa to 
Polynesia: 18. 
Microlepia spelunce, 
Schizoloma ensifolium, 
Asplenium nidus 
A, unilaterale, 
Adiantum caudatum. 
Actiniopteris australis, 
Pteris tripartita. 
Vittaria elongata. 
V. scolopendrina. 
Hymenolepis spicata, 
Polypodium punctatum. 
P. phymatodes 
Angiopteris evecta. 
eastern limit in the Seychelles. 
COSMOPOLITAN SPECIES: 11. 
Polynesian-Asiatic species 
reaching westwards to the 
South-eastern African 
islands, not in continental 
Africa: 10. 
Dryopteris parasitica, 
Polystichum adiantiforme. 
Nephrolepis cordifolia, 
N. biserrata. 
Asplenium lunulatum. 
A, caudatum. 
Trichomanes cupressoides. 
Dryopteris cucullata. 
Odontosoria chinensis. 
Asplenium tenerum., 
. affine. 
A. bulbiferum, 
Antrophyum immersum. 
A, callifolium. 
Schizea digitata, 
Ophioglossum pendulum. 
Pteris biaurita. 
P. quadriaurita. 
Histiopteris incisa. 
Elaphoglossuin conforme. 
Acrostichum aureum. 
g the 11 cosmopolitan species, the 
opical America, 5 of these reaching their 
<a : 
Be ey ee 
