468 CXLII. FILICES. 
29. GYMNOGRAMMA, Desv. 
Sori arising from veins over the under surface of the com- 
pound frond, simple or forked.—Hook. and Baker, Syn. Fil. p. 
376. Grammitis, Ceterach, and Gymunogramma, Pappe and 
Rawson, p. 23 and 41-42. 
5 Cape species, which range under the-sections as under.:— 
Section Leptogramma. Habit and mode of growth of Aspidium. Veins 
free.—1 species. 
Section Eugymnogramma. 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 
with white or yellow powder.—2 species. 
Section Selliguea. Veins anastomosing copiously. Habit and mode of 
growth of Hupolypodium.—1 species. 
Tribe 11. AcROSTICHER. 
Sori forming a stratum over the under surface of the frond 
of some or all the pinne, 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 pinne only.—Hook. 
and Baker, Syn. Fil. p. 899. Stenochleena, Olfersia, and Acro- 
stichum, Pappe and Rawson, p. 43-44. 
6 Cape species, falling under 3 sections, viz. :— 
Section Elaphoglossum. Fronds quite simple. Veins free.—4 species. 
Section Stenochlena. 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 pinne barren.—1 species. 
SuzorpErR 4. Osmundee, 
Vernation circinate. Capsules 2-valved, opening across the 
apex, furnished with a very incomplete horizontal ring. 
31. OSMUNDA, Linn. 
Fruit bearing part quite distinct from the leafy part of the 
frond, forming a panicle made up of copious thyrsoid clusters. 
—Pappe and Rawson, p. 46. Hook. and Baker, Syn. Fil. p. 426. 
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 
Rawson, p. 47; Hook. and Baker, Syn. Fil. p. 427. 
