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Family: Nephrolepidaceae
[Aspidium biserratum Sw., moreAspidium biserratum var. paraense (Willd.) Farw., Aspidium ensifolium Schkuhr, Aspidium exaltatum var. longipinna Benth., Aspidium gibbosum Willd., Aspidium guineense Schumach., Aspidium hoffmannseggii Poir., Aspidium nigropunctatum Spreng., Aspidium paraense Willd., Aspidium punctulatum (Poir.) Sw., Hypopeltis amygdalina Bory, Hypopeltis biserrata (Sw.) Bory, Hypopeltis palmoides Bory, Lepidoneuron acuminatum (Willd.) Fée, Lepidoneuron biserratum (Sw.) Fée, Lepidoneuron punctulatum (Poir.) Fée, Lepidoneuron rufescens (Schrader) Fée, Nephrodium acuminatum (Willd.) Presl, Nephrodium biserratum (Sw.) C. Presl, Nephrodium gibbosum (Willd.) Gaud., Nephrodium guianense Desv., Nephrodium hoffmanseggii (Poir.) Desv., Nephrodium palmoides (Bory) Rich., Nephrodium punctulatum (Poir.) Desv., Nephrodium timoriense Desv., Nephrolepis acuminata (Willd.) C. Presl, Nephrolepis acuta (Schkuhr) C. Presl, Nephrolepis acuta var. laurifolia Christ, Nephrolepis arthropteroides Kunkel, Nephrolepis biserrata subsp. punctulatum (Poir.) Bonap., Nephrolepis biserrata var. digitiformis G.Kunkel, Nephrolepis biserrata var. glandulosa Kuhn, Nephrolepis biserrata var. mauritiana (Desv.) Kuhn, Nephrolepis biserrata var. rufescens (Schrad.) Luetzelb., Nephrolepis caudata Christ, Nephrolepis dayakorum Bonap., Nephrolepis depauperata de Vriese, Nephrolepis ensifolia (Schkuhr) C. Presl, Nephrolepis exaltata var. biserrata (Sw.) Bak., Nephrolepis gibbosa (Willd.) Presl, Nephrolepis hirsutula var. acuta (Schkuhr) O. Kuntze, Nephrolepis hirsutula var. biserrata (Sw.) O. Kuntze, Nephrolepis hirsutula var. ensifolia (Schkuhr) O. Kuntze, Nephrolepis hirsutula var. rufescens (Schrad.) Bonap., Nephrolepis laurifolia (Christ) Proctor, Nephrolepis macrophylla C. Presl, Nephrolepis mauritiana (Desv.) Moore, Nephrolepis mollis Rosenst., Nephrolepis paraensis (Willd.) Presl, Nephrolepis persicifolia Christ, Nephrolepis pilosula Alderw., Nephrolepis punctulata (Poir.) C. Presl, Nephrolepis punctulata var. hirsuta Mett. ex Kuhn, Nephrolepis punctulata var. rufescens (Schrad.) Kunze, Nephrolepis rufescens (Schrad.) Wawra, Nephrolepis splendens (Willd.) C. Presl, Nephrolepis subcordata Presl, Nephrolepis zollingeriana de Vriese, Polypodium integerrimum Vell., Polypodium nephrolepioides (Spreng.) H. Christ, Polypodium palmoides Bory, Polypodium punctulatum Hook., Polystichum acutum (Schkuhr) C. Presl, Pteris piloselloides Blanco, Pteris signata Merr., Tectaria fraxinea Cav.] |
Stem scales loosely appressed to spreading, concolored or bicolored with pale margins. Tubers absent. Leaves 2--22 × 0.3--3.5 dm. Petiole 0.2--5.4 dm, sparsely to moderately scaly; scales spreading, reddish to light brown throughout (rarely with pale margins). Blade sparsely to densely scaly, glabrous or pubescent, hairs mostly on veins and abaxial, pale to light brown, 0.2--0.7 mm. Rachis 1.8--17 dm, points of pinna attachment 7.5--35 mm apart; scales moderately spaced, pale brown throughout. Central pinnae narrowly deltate to narrowly elliptic-lanceolate, 2.5--23 × 0.5--2 cm, base cuneate, truncate to auriculate-cordate acroscopically, rounded basiscopically, acroscopic lobe small and oblong or absent, margins biserrate to serrulate, apex attenuate; costae adaxially glabrous or densely hairy, hairs erect, pale, 0.3 mm. Indusia circular to horseshoe-shaped, peltate or attached at narrow sinus, 0.8--1.1 mm wide. 2 n = 82. Terrestrial or less commonly epiphytic in forested, relatively wet habitats, e.g., swamps, but occasionally thickets, roadsides, or clearings; 0 m; Fla.; Mexico; West Indies; Central America; South America; Africa; se Asia. Some forms of Nephrolepis biserrata closely resemble N . multiflora in pinna shape and indument but lack the distinctively transparent-margined (i.e., bicolored) and persistent petiole scales of the latter species. Nephrolepis multiflora also has more appressed and darker-colored stem scales.
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