166 
lUixDANAO, Zamboanga, monte Baiabac, 1,200 m. s. m., Gopcknul 1770. 
Tlie close affinity of this remarkable fern to Drynaria is shown by the very 
characteristic texture — dry, with thin lamina stiffened by the strongly reinforced 
veinlets — the venation — a line, regular net with free inchided veinlets — the 
dehiscence, from the costa, of the segments of the deeply pinnatifid frond, the 
lleshy, miimtely scaly rhizome, and the hnmus-eollecting habit. The most of 
these features it shares also with Dryostachyum, and w'itli two so-called Polypodia 
of this region — P. hcracleum, and P. mcyeniamim. They show' a near relationship, 
but do not make us regard plants as congeneric. In its humus-collecting struc- 
tures Thayeria is wholly unlike any other known plant, the specialization having 
gone beyond the frond to the ihizome. Each leaf is a unit, .a complete receptacle, 
wholly out of contact w'ith the main rhizome. It is the most perfect of the 
humns-eollecting organs developed in its group, the material collected being 
inclosed on all sides and protected against desiccation with a thoroughness not 
attained even by Asplcnium nidns. The specialization of the branch end as a 
root bearer in the bottom of the cornucopia is a very novel feature. 
After I first found this plant, my appreciation of its novelty grew', and I made 
a second trip — a nearly two days’ journej' into trailless mountains — in a vain 
attempt to secure fruiting specimens. It is common the length of one high 
ridge; but, so far as I could discover, is entirelj' sterile. 
The New Guinea fern described as Polypodium ncctariferum Baker in Beecari’s 
Malesia, 2: 247, Plate 69, is surely a Thayeria, the identification being insured 
by the sterile frond and the tortuous, stout rhizome, both very characteristic. 
I have sterile specimens from Lepanto-Bontoc in northern Luzon, Copeland, 1927, 
agreeing with Beccari’s figure even to the auriculate base. They have elongate, 
rather amorphous palete 7 mm. long, but these are deciduous e.xcept for a ragged, 
peltate base. It is also nectariferous. I call it Thayeria nectarifera (Baker) 
ELAPHOGLOSSUM Schott. 
Elaphoglossum callaefolium (Bl.) Moore. 
Mindanao, Mount Apo, Copeland. 
Java. 
LOMAGRAMMA J. Sm. 
Lomagramma pteroides J. Sm.. Hooker’s Journ. Bot. 4: 152. 
Luzon, Cuming,- Mindoro, McGregor 2115. McGregor’s plant has membranous, 
green pinna?, with evident, but not raised, venation. My Mindanao plants, 
No. 1736, distributed as L. pteroides, are distinct, and I have sterile specimens 
of still another species from Luzon. The genus appears to me to have constant 
and valid characters. 
GLEICHENIA Sm. 
Gleichenia laevissima Christ, Bull. Acad. Mans. 1902, p. 268. 
Luzon, Benguet, Pauai, 1,900 m. s. m., Copeland 1954. 
Cliina. 
Harder in , leaf texture than its local relatives, and conspicuously different in 
the far from horizontal pinnules. 
