158 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
aculeata. In 1866‘ he more exactly describes the fronds as “erect or 
flexuose and scandent,” and lists three species, 0. tenuifolia, O. 
aculeata, and O. clavata, the first and last being of the small erect 
type, the second of the climbing sort. In 1875? he adopts the same 
point of view, though definitely assigning O. tenuifolia as the type of 
the genus, and, after stating that about a dozen widely distributed 
tropical species constitute the genus, remarks that “they form two 
distinct groups, the first having definite fronds and the other scan- 
dent and indefinite, the latter forming the genus Stenoloma of Fée.” 
(As a matter of fact, Fée’s Stenoloma included plants of both sorts, as 
already stated.) Smith makes no mention of 0. uncinella, the type 
of Fée’s genus Odontosoria. In fact, he credits the genus Odon- 
tosoria to ‘Presl (1836),” ignoring the fact that the name was used 
by Presl only in a sectional or subgeneric sense. From this false 
standpoint he was correct in typifying the genus upon 0. tenuifolia; 
but, as pointed out above, the genus must really date from Fée, with 
O. uncinella as its type. 
The next writer to deal with this group was Kuhn,® who in 1882 
properly distinguished the plants of indefinite scandent growth as a 
distinct generic group, but assigned to them the new name Lind- 
sayopsis, listing three species: Lindsayopsis divaricata (Schlecht.), 
L. aculeata (L.), and L. scandens (Desv.). Since these species, how- 
ever variable in indusium characters, are clearly congeneric with 0. 
uncinella, the name Lindsayopsis becomes a synonym of Odontosoria 
Fée. The small species of upright growth are referred by Kuhn to 
no less than three genera, Lindsaya Dry., Schizoloma Gaud., and 
“Odontosoria Presl.’’ Under Odontosoria he lists three species, one 
of them being O. chinensis (L.), which is the same as Davallia tenui- 
folia Swartz, the type of Presl’s original subgenus Odontosoria. 
Thus, not only John Smith but Kuhn and more recently, Diels ‘ 
have wrongly credited the genus to Presl and perhaps on this account 
have either directly or by implication typified it erroneously upon 
Davallia tenuifolia, instead of O. uncinella. 
The systematic relationship of the many species listed by Kuhn 
under Lindsaya (43 species), Schizoloma (25 species), and Odon- 
tosoria (3 species) needs to be carefully investigated; but it is appar- 
ent that the plants called Odontosoria chinensis and O. clavata by 
Smith, Diels, Christensen, and most recent authors (the Trichomanes 
chinensis and Adiantum clavatum, respectively, of Linnzeus) have no 
place under Lindsaya, Schizoloma, or, in its properly restricted sense, 
Odontosoria. For their accommodation the writer has proposed 
' Ferns Brit. & For. 232, 317. 1866. 
* Hist. Fil. 263. 1875. 
3 Gruppe Chaetop. 25-27. 1882. 
4In Engl. & Prantl, Pflanzenfam. 14: 215. 1899. 
