38 
much obliged I shall feel for any evidence on the subject, be its ten- 
dency what it may. 
I have arranged my extracts, &c., under four heads, which I have 
called Geographical, Bibliographical, Botanical, and Cultural; intro- 
ducing scarcely any new matter, but objecting to statements which I 
believe erroneous, and to conclusions which are not in accordance 
with the premises. 
Geographical. 
Asplenium acutum occurs in the Azores (v. s.), Madeira (v. s.), and 
the Canary Islands (Willdenow, Sprengel), Portugal (Wellwitsch), 
Spain (Willdenow, Sprengel), Italy (Sprengel), Hlyria (Sprengel), 
Istria, Croatia, Sclavonia, and Hungary (Sadler), and Ireland (Mac- 
kay, v.s.; Andrews, v.s.; Allman, vy. s.; Allchin, v.s.) In those 
instances where the v. s. is attached, I have examined the specimens, 
and entertain no doubt as to their belonging to a single species. 
With the exception of size, there is no disparity amongst them : 
the Atlantic specimens are generally larger than the European or 
Irish. 
Bibliographical. 
a. Extracts from authors who unhesitatingly treat the species as 
distinct from Adiantum nigrum :— 
]. Ray. 
Filix minor longifolia, tarsis raris, pinnulis longis, tenuissimis et 
oblongis laciniis fimbriatis D. Sherard. Syn. ii. 51. 12 non ramosa 
tenerior, pinnulis vere capillaceis, seu Filicis genus ex Hibernia mol- 
liusculum, foliis tenuissime pennatis. Pluk. Alm. 150. Mant. 78. 
T. 282. f. 3. On the Mountains of Mourn, in the County of Down, 
in Ireland.— Synopsis, 3rd edit. p. 127, date 1724. 
2. WILLDENOW. 
96 Asplenium Adiantum-nigrum. 
Frons plerumque bipinnata, quandoque inferne tri- et superne 
bipinnata. A sequente tamen satis diversum: pinnis nunquam 
caudatis, id est longissime acuminatis, pinnulis non acuminato 
dentatis, et fronde nunquam ex toto triplicato pinnata.—-Sp. Pl. 
v. 347. 
