Prosaptia Presl
Small to medium size, erect or pendulous epiphytes. Rhizome dictyostelic, erect to short-creeping with crowded fronds, scales basally attached, ciliate, opaque dark brown. Fronds stipitate, the stipes articulate to the rhizome, lamina elongate, +/- tapered at both ends, pinnatifid to pinnate with adnate contiguous pinnae, each pinnae with a distinct costa, thick and leathery, glabrescent, the rachis with numerous short, stiff, unicellular hairs; veins simple, rarely forked, pinnately arranged about the costule. Sori solitary and terminal on a few apical veins, and/or terminal on each segment, the receptacle +/- elongate, deeply immersed in pockets of the lamina opening on the margin, or submarginally and directed outwards, exindusiate, parphyses lacking, sporangia on a uniseriate stalk, naked, annulus vertical, interrupted of c.11 thickened cells. Spores trilete.
Species in Papuasia
| 1a. |
Sori marginal, approximately in the lamina plane |
2 |
|
Sori almost marginal in oblique pits |
6 |
| 2a. |
Sori plural or terminal on the segments |
3 |
|
Sorus single on the acroscopic margin |
P. davalliacea |
| 3a. |
Sori occupying lobes or teeth |
4 |
|
Margin entire or crenate |
5 |
| 4a. |
Hairs on stipe under 0.5 mm long |
P. contigua |
|
Hairs on stipe and rachis 1-2 mm long |
P. archboldii |
| 5a. |
Frond pinnatifid to within 1 mm of costa |
P. rosenstockii |
|
Frond less deeply pinnatifid |
P. alata |
| 6a. |
Frond 5-8 mm broad |
P. capillipes |
|
Frond much wider |
7 |
| 7a. |
Segments up to 2.5 mm broad |
P. leysii |
|
Segments over 3 mm broad |
P. engleriana |
