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
Synonyms:
Grammitis micula Lellinger
Grammitis micula Lellinger
Description:
Species Description - Plants epiphytic; fronds pendent, indeterminate; rhizome radial, with ventral root insertion, scaly, the scales 0.8—1(—1.2) x 0.2-0.3 mm, lanceolate, the apex short-attenuate, clathrate, dark brown, the cilia simple, present on scale margins and apex (apical cilia sometimes furcate); petiole 0.5-l(2) x 0.5 mm, dark brown, terete, glabrescent or sparsely pubescent, the hairs ca. 0.2 mm long, appressed, 1-furcate, 3-celled, whitish; lamina to 20-25 cm long, linear-lanceolate, membranaceous, pinnate-pinnatifid, 20-50 pairs of segments, abruptly reduced at the base with 1-3 basal segments shorter than the median ones, the lowermost auriculiform and only short-decurrent onto the petiole base, broadest above the base, but showing periodic constrictions, the apex abruptly reduced, pinnatifid, not ending in a conform or subconform segment; rachis straight, with dark sclerenchyma visible on both sides, sparsely pubescent on both sides, hairs ca. 0.1 mm long, appressed, entire, 1- to 2-celled, whitish; segments ca. 1.5-2.5 cm x 0.2-0.4 cm, plane or slightly undulate, set 60-70° to rachis, widened and asymmetric at the base, decurrent basiscopically, cuneate acro-scopically, the base attached parallel on the rachis (i.e., both sides inserted along the same radius), margin deeply incised (pinnatifid), the apex acute, glabrous, abaxial lamina surface glabrous or sparsely pubescent, the hairs similar to those of the rachis abaxially, adaxial lamina surface glabrous; sinuses about the same width as the segments; venation pinnate, with 5-7(-8) 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 hydathodes without calcareous deposits; sori medial, rounded, not protruding beyond the costa and margin, to 5 pairs per segment, deeply sunken; sporangial capsules glabrous.
Species Description - Plants epiphytic; fronds pendent, indeterminate; rhizome radial, with ventral root insertion, scaly, the scales 0.8—1(—1.2) x 0.2-0.3 mm, lanceolate, the apex short-attenuate, clathrate, dark brown, the cilia simple, present on scale margins and apex (apical cilia sometimes furcate); petiole 0.5-l(2) x 0.5 mm, dark brown, terete, glabrescent or sparsely pubescent, the hairs ca. 0.2 mm long, appressed, 1-furcate, 3-celled, whitish; lamina to 20-25 cm long, linear-lanceolate, membranaceous, pinnate-pinnatifid, 20-50 pairs of segments, abruptly reduced at the base with 1-3 basal segments shorter than the median ones, the lowermost auriculiform and only short-decurrent onto the petiole base, broadest above the base, but showing periodic constrictions, the apex abruptly reduced, pinnatifid, not ending in a conform or subconform segment; rachis straight, with dark sclerenchyma visible on both sides, sparsely pubescent on both sides, hairs ca. 0.1 mm long, appressed, entire, 1- to 2-celled, whitish; segments ca. 1.5-2.5 cm x 0.2-0.4 cm, plane or slightly undulate, set 60-70° to rachis, widened and asymmetric at the base, decurrent basiscopically, cuneate acro-scopically, the base attached parallel on the rachis (i.e., both sides inserted along the same radius), margin deeply incised (pinnatifid), the apex acute, glabrous, abaxial lamina surface glabrous or sparsely pubescent, the hairs similar to those of the rachis abaxially, adaxial lamina surface glabrous; sinuses about the same width as the segments; venation pinnate, with 5-7(-8) 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 hydathodes without calcareous deposits; sori medial, rounded, not protruding beyond the costa and margin, to 5 pairs per segment, deeply sunken; sporangial capsules glabrous.
Discussion:
Lellingeria micula is very similar to the Andean species L. melanotrichia, from which it differs by having less divided pinnae (about 1/2 the pinnae width) dull green laminae, and nonflexuous rachises. In contrast, L. melanotrichia has deeply dissected segments (about 3/4 the pinnae width), light green laminae, and flexuous rachises.The specimen Skuch 2831 is unusual because it is smaller and resembles Lellingeria hombersleyi in habit However, that species has symmetrical segments with the bases equally expanded to both sides, whereas L micula has asymmetrical segments with the bases cuneate acroscopically and decurrent basiscopically.
Lellingeria micula is very similar to the Andean species L. melanotrichia, from which it differs by having less divided pinnae (about 1/2 the pinnae width) dull green laminae, and nonflexuous rachises. In contrast, L. melanotrichia has deeply dissected segments (about 3/4 the pinnae width), light green laminae, and flexuous rachises.The specimen Skuch 2831 is unusual because it is smaller and resembles Lellingeria hombersleyi in habit However, that species has symmetrical segments with the bases equally expanded to both sides, whereas L micula has asymmetrical segments with the bases cuneate acroscopically and decurrent basiscopically.
Distribution:
Chiriquí Panamá Central America| Alajuela Costa Rica Central America| Guanacaste Costa Rica Central America| Limón Costa Rica Central America|
Chiriquí Panamá Central America| Alajuela Costa Rica Central America| Guanacaste Costa Rica Central America| Limón Costa Rica Central America|