Monographs Details:
Authority:
Labiak Evangelista, Paulo H. 2013. Grammitid ferns (Polypodiaceae). I.. Fl. Neotrop. Monogr. 111: 1--130. (Published by NYBG Press)
Labiak Evangelista, Paulo H. 2013. Grammitid ferns (Polypodiaceae). I.
Family:
Polypodiaceae
Polypodiaceae
Description:
Species Description - Plants epiphytic; fronds pendent, indeterminate; rhizome erect, radial, with ventral root insertion, scaly the scales 1-2 x 0.1-0.3 mm, ovate-lanceolate, the apex short-attenuate, clathrate, dark golden brown, glabrous or with only a single apical cilium; petiole 0.5-2 x 0.5 mm, dark brown, narrowly winged, glabrescent or sparsely pubescent, the hairs ca. 0.1 mm long, appressed, simple, 2-celled, yellowish; lamina 10-15 cm long, linear-lanceolate, membranaceous, pinnate, 10-20 pairs of segments, abruptly reduced at the base with 2-3 basal segments shorter than the median ones, the lowermost auriculiform and long-decurrent onto petiole base, broadest above the base, but showing periodic constrictions, the apex gradually reduced, pinnatifid, not ending in a conform or sub-conform segment; rachis straight to slightly flexuous, with dark sclerenchyma visible on both sides, glabrescent abaxially, the hairs 0.1-0.2 mm long, appressed, simple, 2-celled, yellowish, glabrescent adaxially, hairs ca. 0.1-0.2 mm long, appressed, simple, 2-celled, yellowish; segments 0.4-0.5 x 0.3-0.5 cm, sinuate, set 80-90° to rachis, widened and asymmetric at the base, long-decurrent basiscopically, strongly cuneate and slightly lobulate acroscopically, the base attached parallel on the rachis (both sides inserted along the same radius), the lobule not overlapping the base of the next segment, the apex obtuse, the margin slightly crenulate, sinuate, glabrous, abaxial lamina surface glabrescent, the hairs similar to those of the rachis abaxially, adaxial lamina surface glabrous; sinuses narrower than the segments; venation pinnate, with 2-3 (-4) pairs of veins per segment; costae with blackish sclerenchyma obscured by laminar tissue on both sides, sparsely pubescent abaxially, the hairs similar to those of the rachis abaxially, glabrous adaxially; veins simple, without blackish sclerenchyma, ending in hy-dathodes that lack calcareous deposits; sori medial, rounded, not protruding beyond the costa and margin, up to 2(-3) pairs per segment, slightly sunken; sporan-gial capsules glabrous.
Species Description - Plants epiphytic; fronds pendent, indeterminate; rhizome erect, radial, with ventral root insertion, scaly the scales 1-2 x 0.1-0.3 mm, ovate-lanceolate, the apex short-attenuate, clathrate, dark golden brown, glabrous or with only a single apical cilium; petiole 0.5-2 x 0.5 mm, dark brown, narrowly winged, glabrescent or sparsely pubescent, the hairs ca. 0.1 mm long, appressed, simple, 2-celled, yellowish; lamina 10-15 cm long, linear-lanceolate, membranaceous, pinnate, 10-20 pairs of segments, abruptly reduced at the base with 2-3 basal segments shorter than the median ones, the lowermost auriculiform and long-decurrent onto petiole base, broadest above the base, but showing periodic constrictions, the apex gradually reduced, pinnatifid, not ending in a conform or sub-conform segment; rachis straight to slightly flexuous, with dark sclerenchyma visible on both sides, glabrescent abaxially, the hairs 0.1-0.2 mm long, appressed, simple, 2-celled, yellowish, glabrescent adaxially, hairs ca. 0.1-0.2 mm long, appressed, simple, 2-celled, yellowish; segments 0.4-0.5 x 0.3-0.5 cm, sinuate, set 80-90° to rachis, widened and asymmetric at the base, long-decurrent basiscopically, strongly cuneate and slightly lobulate acroscopically, the base attached parallel on the rachis (both sides inserted along the same radius), the lobule not overlapping the base of the next segment, the apex obtuse, the margin slightly crenulate, sinuate, glabrous, abaxial lamina surface glabrescent, the hairs similar to those of the rachis abaxially, adaxial lamina surface glabrous; sinuses narrower than the segments; venation pinnate, with 2-3 (-4) pairs of veins per segment; costae with blackish sclerenchyma obscured by laminar tissue on both sides, sparsely pubescent abaxially, the hairs similar to those of the rachis abaxially, glabrous adaxially; veins simple, without blackish sclerenchyma, ending in hy-dathodes that lack calcareous deposits; sori medial, rounded, not protruding beyond the costa and margin, up to 2(-3) pairs per segment, slightly sunken; sporan-gial capsules glabrous.
Discussion:
Lellingeria pinnata is similar to L. phlegmaria in its short segments (to 0.7 cm long), which are long-decurrent basiscopically and strongly cuneate acroscopically and often bear a lobule on the acroscopic side. The margins of both species are also similar, being crenulate and sinuate. Lellingeria phlegmaria can be distinguished from L. pinnata by its rachis with dark sclerenchyma covered by laminar tissue on both sides, whereas dark sclerenchyma is completely visible (not covered by laminar tissue) in L. pinnata.
Lellingeria pinnata is similar to L. phlegmaria in its short segments (to 0.7 cm long), which are long-decurrent basiscopically and strongly cuneate acroscopically and often bear a lobule on the acroscopic side. The margins of both species are also similar, being crenulate and sinuate. Lellingeria phlegmaria can be distinguished from L. pinnata by its rachis with dark sclerenchyma covered by laminar tissue on both sides, whereas dark sclerenchyma is completely visible (not covered by laminar tissue) in L. pinnata.
Distribution:
Morazán Honduras Central America|
Morazán Honduras Central America|