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Crepidomanes (Presl) Presl

Small, +/- erect epiphytes or subepiphytes, or on moss-covered rocks. Rhizome filiform, long-creeping with spaced fronds, lacking roots, densely covered with dark multicellular hairs. Fronds stipitate, the stipes winged, the lamina linear ovate or lanceolate, pinnately compound, with single-veined ultimate segments, the margins entire, the rachis winged, texture membranous, glabrous, submarginal or scattered false veins (striae) always present. Sporangia sessile, borne on an elongate columnar receptacle, terminal on the lamina segments or lobes and immersed in an obconic to tubular, winged involucre (indusium), the mouth strongly bivalved or rarely entire and expanded, the receptacle usualy exserted when mature; paraphyses lacking, annulus complete, oblique. Spores trilete.

Species in Papuasia

1a. Fronds of normal size 3-10 cm tall, at least bipinnatifid 2
Dwarf forms, mostly digitate or pinnatifid C. nymannii
2a. Submarginal false veinlets continuous, other striae few or absent C. bipunctatum
Submarginal veinlet interrupted, other striae present 3
3a. Mouth of involucre bilabiate 4
Mouth of involucre widely dilated, not bilabiate C. christii
4a. Segments commonly 0.8-1.1 mm wide; lips not very fibrous C. bilabiatum
Segments narrower; much fibre in lips 5
5a. Lamina full of false veinlets C. venulosa
Accessory striae comparatively few C. brevipes

Pleuromanes Presl

Small to minute pendulous epiphytes. Rhizome filamentous, long-creeping with spaced fronds, bearing fine fibrous roots. Fronds stipitate, the stipes unwinged, slightly hairy, the lamina ovate, pinnately compound, the rachises usually winged, the ultimate segments single-veined, usually glaucous, margins entire with a 2-seriate submarginal strand, texture membranous, costae wide and thickened with scattered hairs. Sporangia sessile, borne on an elongate columnar receptacle, terminal on the basal acroscopic lobe of the pinnae, immersed in a +/- winged, tubular abconic involucre (indusium), the lip +/- entire, the receptacle exserted when mature; paraphyses lacking, annulus complete, oblique. Spores trilete.

A single species in Papuasia...................................P. pallidum

Gonocormus v.d.B.

Minute epiphytes or subepiphytes. Rhizome filamentous, long-creeping with spaced fronds, generally hairy, lacking roots, little differentiated from the stipes and rachis. Fronds stipitate, the stipes unwinged, sometimes +/- proliferous from the stipes and rachis, the lamina pinnate or flabellate, with +/- pedate veins, the margins moderately or deeply lobed, each lobe with a single vein, texture membranous. Sporangia sessile, borne on an elongate columnar receptacle, terminal on the lobes, immersed in a +/- winged, tubular obconic involucre (indusium), the mouth dilated and entire, the receptacle exserted when mature; paraphyses lacking, annulus complete, oblique. Spores trilete.

Species in Papuasia

1a. Axes not at all proliferous G. saxifragoides
Axes proliferous 2
2a. Proliferations scanty G. minutus
More conspicuously ramose G. proliferus

Microtrichomanes (Mett.) Copel.

Small to minute, pendulous epiphytes. Rhizome filamentous, long-creeping with spaced fronds, bearing roots. Fronds stipitate, the stipes filiform, the lamina +/- orbicular, palmate, repeatedly dichotomous or forked, sometimes monopodial, with single-veined ultimate segments, the axes winged , membranous, mostly glabrous, margins entire, flat, sometimes ciliate. Sporangia sessile, borne on a short columnar receptacle, terminal on the lamina segments and immersed in an obconic, unwinged, sometimes bivalved, involucre (indusium), the receptacle shortly excerted; paraphyses lacking, annulus complete, oblique. Spores trilete.

A single species in Papuasia.......................M. digitatum

Vandenboschia Copel.

Small to moderate-sized terrestrial ferns or spreading epiphytes. Rhizome thick and wiry, long-creeping with spaced fronds, bearing roots. Fronds stipitate, the stipes winged or not, the lamina linear oblong to ovate, simply pinnate with lobed margins to pinnately decompound, with single-veined ultimate segments, or the ultimate segments with several forked veins, the margins deeply to shallowly lobed, each vein branch ending in a lobe, the margins otherwise entire, the rachis sometimes winged, membranous, sometimes brittle; sometimes reduced fronds without lamina at the base of the stipes. Sporangia sessile, borne on an elongate columnar receptacle, terminal on the lamina segments or lobes and immersed in an obconic, winged, +/- entire-lipped, involucre (indusium), the receptacle exserted with mature; paraphyses lacking, annulus complete, oblique. Spores trilete, globose.

Species in Papuasia

1a. Vertical climbers with simply pinnate fronds V. auriculata
Terrestrial or climbing with decompound fronds 2
2a. Vertical climbers with reduced abortive fronds at the base of the stipes V. aphlebioides
Terrestrial without such reduced fronds V. maxima

Reediella Pic.Serm.

Minute epiphytes or subepiphytes. Rhizome filiform, long-creeping with spaced fronds, lacking roots, densely covered with dark multicellular hairs. Fronds stipitate, the stipes winged, the lamina ovate or lanceolate, bi- or subtripinnatifid with free-veined ultimate segments and a winged rachis, margins entire with 1-2 rows of elongate, variously thickened marginal cells, texture membranous, glabrous. Sporangia sessile, borne on an elongate columnar receptacle, terminal on the basal acroscopic lobe of each pinna, immersed in a winged tubular involucre (indusium), the lip expanded, the receptacle exserted when mature; paraphyses lacking, annulus complete, oblique. Spores trilete.

Species in Papuasia

1a. Marginal elongate cells in a single row R. endlicheriana
Marginal elongate cells in a double row R. humilis