1. Aspleniaceae Newman

    1. This family is accepted.

[FWTA]

Aspleniaceae, A.H.G Alston. Flora of West Tropical Africa. 1959

Habit
Epiphytic or terrestrial; rhizomes creeping or erect; scales clathrate, usually dark
[FTEA]

Blechnaceae, B.S. Parris. Flora of Tropical East Africa. 2006

Habit
Usually terrestrial ferns, sometimes lithophytic, epiphytic or climbing
Rhizomes
Rhizomes erect to long-creeping, scaly, scales not clathrate
[FWTA]

Blechnaceae, A.H.G Alston. Flora of West Tropical Africa. 1959

Habit
Rhizome forming an erect trunk or wide–climbing, scaly at apex
Distribution
This indusium is really a false indusium or modified leaf margin and the photosynthetic lamina of the fertile frond of Eu–Blechnum, which forms a flange extending beyond the indusium is a new structure (see Bower Ferns 3: 165 (1928))
[FWTA]

Athyriaceae, A.H.G Alston. Flora of West Tropical Africa. 1959

Habit
Rhizomes terrestrial, usually short, stout and suberect; scales not clathrate, with entire or toothed margins
[FTEA]

Woodsiaceae, Bernard Verdcourt. Flora of Tropical East Africa. 2003

Habit
Terrestrial with erect or less often creeping rhizome, sometimes forming a short caudex; stipe not articulate (except in Woodsia), often densely scaly particularly near base, with 2 vascular strands united and U-shaped above
[FTEA]

Thelypteridaceae, Bernard Verdcourt. Flora of Tropical East Africa. 2006

Habit
Terrestrial ferns
Rhizomes
Rhizome creeping or erect with brown non-peltate scales
Stipes
Stipe not articulated, with 2 vascular strands at base which fuse upwards to form a single U-shaped strand
Leaf lamina
Lamina 1–2-pinnate or rarely 3-pinnatifid, usually narrowly oblong in outline, glabrous to pubescent or pilose; the indumentum often comprises stiff acicular unicellular hairs, glands of various sorts and fine soft hairs, sometimes hooked at the apex (multicellular hairs present only in one introduced genus, see addendum p 41); scales are also sometimes present in two African genera along the costae or costules
Leaf veins
Veins free or few to many pairs of veins arising from adjoining costules anastomosing into a vein which runs to the sinus between the pinna-lobes
Sori
Sori round, with or without a reniform indusium to linear and exindusiate
Spores
Spores monolete with perispore.
Note
* Completed almost entirely from revisions of R.E. Holttum particularly his account of the African species in J. S. Afr. bot. 40: 123–168 (1974), and Malesian species in Fl. Mal., ser. II, 1: 331–599 (1981). His own annotated copy of the 1974 paper has been very useful. I have, however, in a few cases found his species concepts too narrow. Holttum divides the family up into 23 genera and stated perhaps 1000 species worldwide. It was partly the large number in Asia (some ten times as many as in Africa) and the cumbrous nature of the Asian species being treated as one genus that forced him to the practical alternative of separate genera; but he admitted that for those concerned only with Africa or part of Africa it was a perfectly reasonable alternative to adopt the one genus Thelypteris as was done by Schelpe in F.Z. Pteridophyta. A.R. Smith in Kubitzki, Fam. Gen. Vasc. Pl. 1: 263–272 (1990) and in Fl. Mesoamericana 1, has recognised 5 genera with numerous subgenera. J.P. Roux, Consp. S. Afr. Pterid. 113–122 (2001) follows Holttum’s classification. Twelve genera, 26 species and one hybrid are dealt with in the present account. Many of the species have been placed in numerous different genera during the past 250 years and for some species the resulting synonymy runs to several pages. A great deal of this that is not relevant to East Africa has been omitted.
[FWTA]

Thelypteridaceae, A.H.G Alston. Flora of West Tropical Africa. 1959

Habit
Rhizomes terrestrial, creeping or erect; roots without a sheath of sclerenchyma; rhizome–scales not peltate, often bearing unicellular hairs on the margin and surface

Images

Aspleniaceae Newman appears in other Kew resources:

First published in Hist. Brit. Ferns : 6. 1840 (1840)

Sources

Flora of Tropical East Africa
Flora of Tropical East Africa
http://creativecommons.org/licenses/by-nc-sa/3.0

Flora of West Tropical Africa
Flora of West Tropical Africa
http://creativecommons.org/licenses/by-nc-sa/3.0

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2018. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0