Underwood : The genus Stenochlaena 37 



ferences, it seems better, therefore, to recognize only a single 

 genus with four fairly marked sections which maybe distinguished 

 as follows : 



Synopsis of (he sections of Stenochlaena 



Lateral veins springing from a vein lying parallel to the midrib and occasionally con- 

 necting with it ; margins of the pinnae spiny, 



Sporophyls simply pinnate. \ Eustenochlaena. 



Sporophyls normally bipinnate. \ Caf raria Pre si. 



Lateral veins springing direct from the midrib ; pinnae not spiny. 



Climbing stems spiny, not scaly, naked ; leaves trimorphous. 



\ Teratophyllum Mett. 



Climbing stems not spiny, usually more or less densely scaly. 



\ Lomariopsis Fee. 



The species of the first three sections are all confined to the 

 tropics of the Old World. Those of the section Lomariopsis are 

 divided between the tropics of the Old and New worlds, approxi- 

 mately in the ratio of three to two. 



The genus 



i. EUSTENOCHLAENA 



?chlaena was founded by Jc 



and was based on Acrostic/nan scandens * as a type. The species 

 closely allied to this, then, must constitute the section Eustenoch- 

 laena, notwithstanding the fact that there has been a different use 

 for the term.f There are three species of this section, one of 

 which has a wide range and presents considerable variation from 

 its various stations. The other two species have quite a limited 

 range. They may be easily separated by the following synopsis : 



Pinnae of the sporophyls narrow, 3 mm. wide. 3. S. palustris. 



Pinnae of the sporophyls wider, 5-10 mm. wide. 



Pinnae 3.5-4 cm. wide, rounded-obtuse at the base; pinnae of the sporophyls nar- 



row, 5 mm. wide. 



2. S, Afilnei. 



Pinnae 3 cm. wide, truncate at the base ; pinnae of the sporophyls wider, 10 mm. 



I. S. laurifolia. 



wide. 



i. Stenochlaena laurifolia Presl, Epim. Bot. 164. 1851 (type 



from Luzon, Cuming 226). 

 Acrostichum laurifolinm Hook. Sp. Fil. 5 "• 2 50. 1864. — Syn. 



Fil. 412. 



Range: Philippine Islands. 



* Smith (Jour. Bot. Hook. 3: 401. 1841) wrongly attributes this species to Lin- 

 naeus. His context, however, makes clear the species intended. Later he included 

 members of other sections in the genus (Jour. Bot. Hook. 4 : 149. 184 1). 



f Diels, Die natiirlichen Pflanzenfamilien i 4 : 251. 1899 ; where the term Eusttn- 

 ochlaena is used to include also species of Lomariopsis Fee. 



