4GS CXLTII. FILICES. 



29. GYMNOGRAMMA, Desv. 



Sori firising from veins over the under surface of the com- 

 pound frond, simple or forked. — Hook, and Baker, St/n. Fil. p. 

 370. Grammitis, Ceterach, and Gymnogramma, Pappe and 

 Bawson, p. 23 and 41-42. 



5 Cape species, whicli range under the sections as under: — 



Section Leptogramma. Habit and mode of growth of Aspidlum. Veins 

 free. — 1 species. 



Section Engymnogrmnma. Habit and mode of growth of Cheilanthes. 

 Veins free. Fronds not waxy on the under surface. — 1 species. 



Section Ceropteris. Like the last, but the fronds covered all over below 

 witli white or yellow powder. — 2 species. 



;Scction Seliiguea. Veins anastomosing copiously. Habit and mode of 

 gi-owth of Ev^polypodium. — 1 species. 



Tribe 11. AcROSTiCHEiE. 



Sori forming a stratum over the under surface of the frond 

 of some or all the pinnae, not confined to the veins only. 



30. ACROSTICHUM, Linn. 



Patches of sori covering the whole of the under surface of 

 the frond, or in one species of the upper pinnae only. — Hook, 

 and Baker, Spi. Fil. p. 399. Stenochl?ena, Olfersia, and Acro- 

 stichum, Pappe and Rawson,p. 43-44. 



6 Cape species, falling under 3 sections, viz. : — 



Section ElapTioglossum. Fronds quite simple. Veins free. — 4 species. 



Section StenocJilcsna. Barren fronds, simply pinnate, fertile 2-pinnate, 

 with very narrow divisions like those of Lomaria. Veins close, free, 

 parallel. — 1 species. 



Section Chrysodium. Fronds simply pinnate. Veins anastomosing co- 

 piously ; lower pinnoe barren. — 1 species. 



Suborder 4. Osinundese. 



Vernation circinate. Capsules 2-valved, opening across the 

 apex, furnished with a very incomplete horizontal ring. 



31. OSMUNDA, Linn. 



Truit bearing part quite distinct from the leafy part of the 

 frond, forming a panicle made up of copious thyrsoid clusters. 

 — Pappe and Pawson, j)- 40. Hook, and Baker, Sj/n. Fil. p. 420. 



1 Cape species. The well-known, widely-diffused O. regalis. 



32. TODEA, Willd. 



Sori on the back of the leafy part of the frond. — Pappe and 

 Pawson, p. 47 ; Hook, and Baker, Si/n. Fil. p. 427. 



