﻿80. POLYBOTRYA. 725 



Rhizome erect or creeping, but not high-scandent. Fronds not articulate 

 to the rhizonae, at least simply pinnate, dimorphous, the fertile ones not 

 Lomaria-like ; veins free in malayan material. 



Pantropical. 



Arrangement of the sections. 



§1. EGENOLFIA. Veins free; leaflets with a tooth or seta in the sinuses of 

 the crenations or lohes. Rhizome short-creeping. Hk. Bk., Syn. Fil., tab. 

 VII, fig. 60, h— j; Diels, in Engl. & Pranll, Nat. Pfl. Fain., l\ fig. 102. 



§2. PSOMIOCARPA. Veins free; leaflets without a tooth or seta in the 

 sinuses. Rhizome erect or slightly tuberous. Diels, 1. c, fig. 105, B. 



§3. EUPOLYBOTRYA. Veins free; leaflets without a tooth or seta in the 

 sinuses. Rhizome wide-creeping, scaly. Hk. Bk., I. c, fig. 60, c — e; 

 Diels, 1. c, fig. 104. (Malayan?). 



§4. ARTHROBOTRYA. Like § 3, but the rhizome naked; leaflets articulate 

 to the racbis. 



§ 5. OLFERSIA. Vein tips united by an intramarginal Iransversing vein. Hk. 

 Bk., 1. c, fig. 60, m— 0. Diels, 1. c, fig. 103, E. (Not in Malaya). 



§ 6. SOROMANES. Veins anastomosing ± as in Nephrodium, but less regu- 

 larly. Hk. Bk., 1. c, fig. 60, r— s; Diels, 1. c, fig, 105, C. (Not in 

 Malaya). 



Key to the species (*). 



a. Pinnae not articulate to the rachis. 



h. Leaflets with a tooth or seta in the sinuses of the crenations or lobes. 



(1) P. appendiculata. 

 b.b. Leaflets without a tooth or seta in the sinuses. 

 c. Fronds 2-pinnatifid. 



d. Pinnae decidiiously scaly at the margin. 



(4) P. stenosemioides. 



d.d. Pinnae not scaly at the margin. (2) P. Nieuwenhuisii. 



c.c. Fronds 2—3-pinnate. (3) P. apiifolia. 



a,a. Pinnae articulate to the rachis. (5) P. articulata. 



(*) Ttie rhizome of one of the species being unknown to me, I don't follow tlio arran- 

 gement of the sections in lliis key. 



