Filices Adansonianae. 291 
4. Cystopteris alpina, C. fragilis, C. sp. ? 
5. Dennstaedtia sp.? 
6. Dryopteris Linnaeana, D. marginalis, D. Oreopteris, D. patens, 
D. spinulosa var. intermedia, D. syrmatica, D). sp. ?, D. sp.? 
. Goniopteris tetragona. 
. Leptogramme africanum. 
. Matteuccia Struthiopteris. 
. Polystichum aristatum. 
. Pteridium aquilinum. 
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1 
V. Ceterac (p. 20) is written as Ceterach on the labels of specimens. 
‚It contains 3 genera; the species are 
1. Ceterach officinalrs. 
2. Asplenium achilleifolium, A. forsiacum, A. lanceolatum, A. la- 
serpitüifolium, A. marinum, A. Trichomanes. 
3. Stenochlaena sorbifoha. 
So, Apanson’s Ceterac is better considered as a synonym of Asplenium. 
Two undescribed genera are suffixed to Ceterach. These are Di- 
ceterach and Triceterach which contains the following species: 
Asplenium fontanum 
» Ruta-muraria 
Diceterach ! 
Diplaxvum sp.? 
Notochlaena Marantae 
Asplenium fissum 
: » NIITUM 
Triceterach J 
Cystopteris alpina 
Dryopteris Phegopteris 
It is very probable that he had distinguished these genera by the 
divisions of fronds. 
VI. Dryopteris (p. 20) is as shown in the preceeding chapter. 
VII. Polypodium (p. 20) includes 4 genera of 2 families; the species are 
1. Gleichenia linearis, G. polypodioides. 
2. (Goniopteris vivipara. 
3. Meniscium reticulatum. 
4. Polypodium aureum, P. lycopodioides, P. parvulum, P. pecti- 
natum, P. phyllitidis, P. repens, P. vulgare, P. vulgare var. 
cambricum, P. vulgare var. serratum. 
VIII. Hemionitis (p. 20) is represented by Diplaxium proliferum. 
IX. Blechnum (p. 20) is represented by D. occidentale and D. sprcant. 
