1919] Weatherby,— Nomenclature of Gray's Manual Ferns 177 
the European in habit and characters of root-stock and indusium. 
Its distinetness was long ago recognized by Desvaux who gave it a 
name under Pteris. It should be known by the recently published 
combination, Pteridium latiusculum (Desv.) Maxon. 
Scolopendrium.— In taking up the name Phyllitis for this genus, 
Christensen cited as its place of publication Ludwig, Instit., ed. 2. 142 
(1757). Ludwig's description, however, is almost ludicrously inade- 
quate, consisting of the single phrase “folio simplici" and applicable 
to the hart's-tongue rather than to any. other simple-leaved fern only 
because of the mention under it of “lingua cervina.” Phyllitis was 
therefore rejected in the Manual and the well-published Scolopendrium 
Sm. (1793) substituted. It appears, however, that Phyllitis was well 
and properly published in Scopoli's Flora Carniolica (1760). It should 
be taken up, but with the author citation Gleditsch ex Scop. instead 
of Ludwig. Under Phyllitis the correct specific combination is P. 
Scolopendrium (L.) Newman, based on Asplenium Scolopendrium L. 
It may be observed that, of the thirty changes here recorded, 
eighteen are purely nomenclatorial, due to the discovery of earlier 
names than those previously in use — a somewhat sad comment on 
the wisdom of the Brussels Congress in refusing to adopt a list of 
nomina conservanda in ferns. 
In the following summary, the Manual names, arranged alphabeti- 
cally and printed in italics, come first under each number. They are 
followed, immediately after the — sign, by the names to be substituted 
for them, printed in small capitals or, in the case of the few new com- 
binations necessary, in bold-faced type. The accepted names are 
followed, in turn, by any needed synonymy in italics. 
1. Aspidium Sw. (1801) = THELYPTERIS Schmidel, Icon. Pl. ed. 2, 
45, pls. 10 and 13 (1762). Dryopteris Adans. Fam. Pl. ii. 20 (1763). 
2. Aspidium Boottii = THELYPTERIS Boorru (Tuckerm.) Nieuwl. 
Am. Mid. Nat. i. 226 (1910). 
3. Aspidium cristatum = THELYPTERIS CRISTATA (L.) Nieuwl. l. c. 
4. Aspidium cristatum, var. Clintonianum = THELYPTERIS CRIS- 
TATA, var. Clintoniana (D. C. Eaton), n. comb. . Aspidium cristatum, 
var. Clintonianum D. C. Eaton in Gray's Man. ed. 5, 665 (1867). 
5. Aspidium Filix-mas = 'THELYPTERIS Fitrx-mas (L.) Nieuwl. l. c. 
6. Aspidium fragrans = THELYPTERIS FRAGRANS (L.) Nieuwl. l. c. 
7. Aspidium Goldianum = THELYPTERIS Gorpiana (Hook.) 
Nieuwl. l. c. 
