I'UILJrri^'K SPECIES OF ATIIYRIUM. 297 
I first mistook this for an Asplenium and the bundles of the stipe did not clear 
its afTinity; but the pales-, though pale, are of Athyriiim type. Its generic 
position is finally established by its quite evident afTinity to A. Bohteri and A. 
Williamsi, and not to any species of Asplenium. 
33. Athyrium Williamsi Copel. comb. nova. Diplazium Williamsi Copel. in 
Philip. Jonrn. Sci. 1 (1906) Suppl. 150. 
Mindanao, San Eanion, Copeland IG/fS. Boyce 13, from Tarlac province, Luzon, 
seems safely referable here. 
There are also two species found about Mount Banajao, which are near A. 
Williamsi, but have the stipes clothed, densely near the base, with crinite, dark 
brown paleiE. The smaller of these was collected by Steere and determined by 
Harrington as A. japonicum, var. coreanum. It is included in Cuming 56, and 
is possibly Asplenium hrachypodum Bakor ; hut this is more probably a synonym 
of Ath. grammiioides. This fern is simply pinnate with lanceolate fronds, and 
auricled, serrate pinnae, the lowest remote, reduced and deflexed. Examples are 
Elmer 796/f and 7065. 
The. other of these Banajao ferns I have also from Mount Canlaon. It varies 
from barely bipinnate to deeply tripinnatifid. 
■ 
GROUP OF A. riNNATUM. 
34. Athyrium pinnatum (Blanco) Copel. Allantodia pinnata Blanco Fl. Filip. 
ed. 2 (1845) 571. CaUipteris silvatica Bory, 1804; Diplazium, Swtz., 1806; 
Athyrium., Milde, 1870, non Milde, 1866, q. v. supra. Diplazium peliolare Presl 
Epim. (1849) 86. Athyrium, Milde, 1870. Diplazium hulhiferum Brack., 1834. 
Asplenium Braekenridgei Baker, 1867. For other synonyms of D. silvatica Swtz, 
see Christensen, who also lists D. tenerum Presl as a synonym of D. hulhiferum. 
Luzon, Mount Mariveles, Williams S3, 205, Copeland 2S8, f383, Whitford ZT,, 
Topping 531, Leiherg, For. Bur. 1328, Borden: Mindoro, For. Bur. 9937 Merritt: 
Samar, Cuming 333 in part: Bohol, Cuming 3^9 in part: :viin(lanao, Lanao, 
Clemens 167, 252; Mount Malindaiig, For. Bur. 1^735 Mearns & Hutchinson; San 
Kamon, Copeland 1678; Davao, Copeland 672. 
India to Polynesia. 
Although various authors and illustrious pteridologists have found it necessary 
to describe this common Philippine fern as a species distinct from D. silvaticum 
Swtz., tlie differences have never been clear to me, and do not tend to become 
more so with the accumulation of material. The pinnae are sometimes rather 
deeply lobed, but usually not more so than is regarded as characteristic of 
D. silvaticum. Both Baker (Syn. Fil. 234) and Christ (Philip. Journ. Sci. 2 
(1907) Bot. 162) try to distinguish the Philippine plant by the stalked pinn£e; 
but we have specimens from China and Java believed to be representative D. 
silvaticum witli the pinnee fully as long-stalked, and the Javan plant is proliferous 
in the same manner as is D. hulhiferum. 
As to the name to be given this fern, I have not used silvaticum because one 
fern is already well known by that binomial and was the first to receive it. 
Blanco's description fits this fern in almost every respect. Mandaloyan, where 
Blanco states that this species is common, is a suburb of :\Tanila, and I doubt if 
the fern survives there now. But it almost certainly grew there once, as it does 
now in similar places farther from the city; and it is the only similar fern which 
dues grow in just such a habitat. Therefore, if Blanco had any Athyrium or 
any fern nearly fitting his diagnosis, which was once common in T^tandaloyan, 
it must have l)een this one. 
