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ovato-oblongis, subobtusis, basi angustata; lobulis ovato-ellipticis, 
dentibus 2—3, inaequis, brevibus, obtusis- 
Hab. Gallia, Loire, in saxosis ad Chorsin prope Sauvain, 
3200 ped. (Gdgr.). 
Lobi interdum apice subacuti antecedente profundius lobulati; 
folia sat pallide virentia, rigidiuscula. 
Oystopteris adfinita Gdgr. Petiolis omnino pallide virentibus; 
folium 20 cm. altum, 5'/, cm. latum, ambitu oblongum, in acumen 
longe productum; segmentis sat rectis, oblongis, breviter acutis, ner- 
vis virescentibus, vix prominulis; lobis late obovatis, basi angustata; 
lobulis obovatis, 3—4-dentatis, dentibus valde inaequalibus, acutis, 
subcuspidatis. 
Hab. Gallia, Loire, in montosis prope Ruthiange, 3000 ped. 
(Malarbet). 
Lobulorum dentes interdum denticulati; petiolum basi flexuo- 
sum superne rigens. 
Ö'ystopteris alpestris Gdgr. Petiolis omnino pallide virentibus; 
folium 10—12 cm. altum, 4 cm. latum, ambitu oblongum, breviter 
acutum; segmentis sat rectis, oblongis, breviter acutis, nervis pro- 
minulis, bruneis; lobis obovatis, basi angustissima; lobulis ovato- 
obtusis, hine inde minute denticulatis, denticulis acutiusculis. 
Hab. Pyrenaei centr. ad Cauterets, alt. 4000 ped. (P. N. 
Maillard). 
Lobi antecedente majores, basi angustius attenuati; folium ri- 
gens, amoene virens. 
Oystopteris algeriensis Gdgr. Petiolis omnino virentibus; fo- 
lium 11—13 cm. altum, 3'/, em. latum, ambitu oblongum, longe 
acuminatum; segmentis patulis, oblongis, superne sat acuto-subacu- 
minatis, nervis vix perspicuis, virescentibus; lobis obovatis, apice 
contractis, basi valde angustata, regulariter bifariamque lobulatis, 
lobulis obtusis 1—3-dentatis, dentibus acutis, tenuibus. 
Hab. Algeria, ad rupes Ravin d’Akbou (Debeaux) et supra 
Tizi-Ouzou Kabyliae (Gdgr.). 
Ab antecedente lobis superne minus obtusis magisque regula- 
riter lobulati diversa. 
Öystopteris tridentata Gdgr. — Exs. Soc. Bareinonensis 
1876! Petiolis virescentibus; folium 21—23 cm. altum, 4'/,—5 cm. 
latum, ambitu oblongum, abrupte longeque acuminatum; segmentis 
patulo-subrectis, oblongo-acuminatis, nervis prominulis, albidis; lobis 
oblongo-obtusis, basi truncato-attenuata, lobulis obtusis, tridentatis; 
dentibus acutis, brevibus. 
Hab. Hispania, Lerida, in fauce Aruzurraja secus fluv. 
Vidassa (J. M. de Lacoizqueta). 
Elata, rigidula; lobi segmentorum minute nervoso-retieulati, 
virentes. 
Öystopteris vuthenica Gdgr. Petioli omnino pallide bruneo- 
rufescentibus; folium 22—24 cm. altum, 4'/,—-5 cm. latum, ambitu 
oblongum, sensim longeque acuminatum; segmentis patulis, vis erectis, 
