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Nephrolepis cordifolia (L.) C. Presl
Herringbone Fern; Fishbone Fern; Pop-Rock Fern; Aspidium tuberosum Bory ex Willd; Nephrolepis tuberosa Bory ex Willd CPresl sensu Hooker, JD 1864; Nephrolepis radicans var cavernicola Domin; Aspidium volubile var cavernicolum Domin FMBailey; Polypodium cordifolium L; Aspidium cordifolium L Sw; Aspidium cordifolium var tambourinense Domin FMBailey; Nephrolepis auriculata L Trimen; Narrow swordfern; Nephrolepis pendula; Aspidium pendulum

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Nephrolepis cordifolia, sori
© George Yatskievych, 2006-2011 · 1
Nephrolepis cordifolia, sori
Nephrolepis cordifolia, sporangia
© George Yatskievych, 2006-2011 · 1
Nephrolepis cordifolia, sporangia

Nephrolepis cordifolia, entire
© George Yatskievych, 2006-2011 · 1
Nephrolepis cordifolia, entire

Associates · map
FamilyScientific name @ source (records)
Syrphidae  Milesia tenuis @ BPI (1)

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Following modified from Plants Database, United States Department of Agriculture
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Following modified from Flora of North America
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4. Nephrolepis cordifolia (Linnaeus) C. Presl, Tent. Pterid. 79. 1836.

Tuberous sword fern, tuber sword fern

Polypodium cordifolium Linnaeus, Sp. Pl. 2: 1089. 1753; Aspidium cordifolium (Linnaeus) Swartz

Stem scales spreading, concolored. Tubers present or absent. Leaves 2.5--10.7 × 0.3--0.7 dm. Petiole 0.3--2 dm, moderately to densely scaly; scales spreading, pale brown throughout. Blade lacking scales, glabrous (rarely with a few branched hairs abaxially). Rachis 2.2--9 dm, points of pinna attachment 5--12 mm apart; scales moderately spaced to dense, pale to dark brown, point of attachment distinctly darker. Central pinnae oblong to lanceolate-oblong, straight to slightly falcate, 0.9--5 × 0.4--0.9 cm, base auriculate-cordate, acroscopically overlapping rachis, acroscopic lobe deltate, margins entire to serrulate to smoothly crenate, apex acute to bluntly rounded; costae adaxially glabrous. Indusia reniform to lunate or deltate-rounded, attached along broad sinus, 1.1--1.7 mm wide. 2 n = 82.

Terrestrial or epiphytic in wet, shady places, limestone ledges, cliffs, rock, roadsides, and often old homesites or waste places; widely escaped from cultivation and only questionably native to any particular region; 0 m; Fla.; Mexico; West Indies; Central America; South America; Africa; se Asia; Pacific Islands in Hawaii.

Updated: 2020-09-19 10:06:32 gmt
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