cxliii. filices. 407 



Tribe 9. Eupoltpodie^. 



Sori without an involucre, globose or rarely suboblong, 

 placed on the back of the segments, dorsal or terminal on the 

 veins. 



25. POLYPODIUM, Linn. 



Characters of the tribe. — Hooh. mid Balcer, Syn. Fil. p. 304. 

 Polypodium, Goniopteris, Marginaria, Pleopeltis, Phymatodes, 

 and Niphobolus, Fappe and Rawson, p. 39-41. 



A very large genus, and variable as to habit, and yeining. There are two 

 principal sections, viz. Fhegopteris^ with fronds like those of the Aspidieaf 

 stipes continuous with the caudex, and sori always medial on tlie veins ; — 

 and Eiipoli/podium, in which the stipes is jointed at the base, and the sori 

 usually terminal on the veins. The first section is represented at the Cape 

 by 2 species of subsection Goniopfens, which has the veining of Eunephro- 

 dmm. Of the subsections of Eupoly podium, there are — 



Subsection 'Eupolypodium proper. Veins all free. — 3 species. 



Subsection Goniophlehium. Veins forming ample uniform areolse, with 

 the sori terminal on single free veinlets in the centre. — 1 species. 



Subsection JS^iphololus^ with matted fi'onds, and a more complicated 

 venation, — 1 species. 



Subsection Phymatodes. Fronds not matted, veins uniting copiously 

 and irregularly. — 5 species. 



Tribe 10. GrRAMMITIDEiE. 



Sori linear or linear-oblong, without an involucre, dorsal or 

 marginal. 



26. MONOGRAMME, Schk. 



Fronds like small leaves of grass, with only a central mid- 

 rib. Sori in a line close to the midrib. — HooJc. and Bakei\ 

 Syn. Fil. p. 874. 



The simplest in structure of all the plants of the Order. — 1 Cape species. 



27. VITTARIA, Smith. 



Fronds grass-like, with copious, lateral, free veins. Sori 

 linear, continuous, marginal. — Fappe and Rawson,pp. 38,' 53 ; 

 Sooh. and Baher, Syn. Fil. p. 395. 

 A single Cape species. 



28. NOTOCHLJEWA, E. Br. 



Fronds ovate, compound. Sori marginal, at first oblong or 

 subglobose, soon confluent into a continuous marginal line. — 

 Fappe and Eawson, p. 42 ; Hook, and Balcer, Syn. Fil. p. 370. 



4 Cape species, 3 of which are very rare, and nearly or quite endemic, 

 the other probably identical with a plant common round the shores of the 

 Mediterranean. 



2 n 2 



