﻿Q6 8. hymenoPhylldm. 



Arrangement of the sections. 



% 1. EUHYMENOPHYLLUM. Ultimate segments of the fronds entire. 

 § 2. LEPTOCIONIUM. Ultimate segments spinuloso-denticulate. 



§ 1. EUHYMENOPHYLLUM. 



a. Fronds naked. 



h. Main rachis not winged, or winged towards the apex only. 



c. Fronds under 5 c.M. long. (1) H. discosum. 



C.C. Fronds more than 5 c.M. long. 



d. Ultimate segments crisped or complicate. (2) H. ooides. 



d.d. Ultimate segments flattened. 



e. Pinnae rather distant. (3) H. eximium. 



e.e. Pinnae rather imbricating. 



f. Ultimate segments emarginate at the apex. Valves 



of the indusium slightly repand. (4) H. modestum. 



f.f. Ultimate segments entire as are the valves of the 



indusium. (S) H. flabellatum. 



b.b. Main rachis winged throughout. 



1. Valves of the indusium more or less toothed at the outer edge. 



$. Edges crisped. (6) H. australe. 



§.$. Edges not crisped. 



:^. Main rachis slightly winged. (7) H. demissum. 



(8) H. subdemissum. 

 ^.■^. Main rachis broadly winged. (9) H. badium. 



1.1. Valves of the indusium entire, or rarely crenate at the apex. 

 2. Fronds mostly 2 — 5 c.M. long. 



•J>. Sori numerous on the higher pinnae. Receptacle included. 



(10) H. paniculiflorum. 

 f.f. Sori solitary on the higher pinnae. Receptacle exserted. 



(11) H. ringens_ 

 2.2. Fully developed fronds mostly 5 — dS c.M. long. 



3. Edges crisped. (12) H. thuidium. 



3.3. Edges not crisped. 



■1. Stipes winged ± throughout. (15) H. salakense. 

 l:.l. Stipes not winged, or winged towards the apex only. 



