44 The Philippine Journal of Science m* 



Grammitis coriacea Kaulf is described as differing from G. lan- 

 ceolatea Sw., in being acutiuscula instead of acuminata, and with 

 sori linearibus elongatis instead of costae contigiiis subobliquis. 

 The type locality is the same for both: "Ins. Mascaren." The 

 two are now treated by all authors as identical. 



LOXOGRAMME (Bl.) Presl 



To Presl's diagnosis, the following addition is essential : Genus 

 ab Eupolypodii section e frondibus simplicibus (Gramittide auct. 

 plur.) derivatum. In this section, elongate sori, approaching 

 the type of Loxogramme, are found, notably in Polypodium 

 magellanicum (Desv.) [Grammitis mageUanica Desv. Berl. Mag. 5 

 (1811) 313; P. Billardieri (Willd.) C. Chr., non R. # Br., best 

 known as P. australe Mett., non Fee], and less conspicuously 

 in P. dolichosorum Copel. and many other species. In the same 

 group the occasional anastomosis of veins is far from rare in 

 species or individuals with notably wide fronds. 



The genus is typically Malayan, extending outward as far as 

 Africa, Japan, and Polynesia. It is supposed to include also a 

 Mexican species, L. Salvinii (Hooker) Maxon. I have included 

 this in the key to the species, having no valid reason for not 

 doing so. By diagnosis, it is certainly a Loxogramme, and it 

 has altogether the appearance of one. Still, I suspect that a 

 study more careful than I have been able to give to it and the 

 Eupolypodia of the same region will show that it has had a 

 separate origin in the parent group, and must therefore not be 

 included in the same daughter genus. 



Key to the species. 



1. Fronds very dimorphous. 



2. Fertile frond narrowly linear L. dimorpha Copel. 



2. Fertile frond linear-oblong L. conferta Copel. 



1. Fronds somewhat dimorphous. 



2. Sori parallel to costa or nearly so L. paltonioides Copel. 



2. Sori moderately spreading L. iridif olia (Christ) Copel. 



1. Fronds uniform. 



2. Fronds lanceolate (broadest below the middle) I. Brooksii Copel. 



2. Fronds linear. 



3. Under 20 cm tall L. parallela Copel. 



3. Over 25 cm tall L. linearis Copel. 



2. Fronds linear-oblong, stipitate, small L. africana Copel. 



2. Fronds oblanceolate, broadly or narrowly. 

 3. Fronds 1 to 2 cm broad. 

 4. Fronds opaque. 



5. Sori costular 1. lanceolata (Sw.) Presl. 



5. Sori divergent. 



6. Stipitate L. Fauriei Copel. 



6. Decurrent L. malayana Copel. 



