Lindsaea lancea (L.) Bedd., Suppl. Ferns Brit. India 6: 292. 1876

Castro-Aguiar, Pedro Henrique, Fernandes, Rozijane Santos & Zappi, Daniela Cristina, 2025, Ferns of the Parque Nacional das Nascentes do Rio Parnaíba Brazilian Cerrado, Rodriguesia (e 00612024) 76, pp. 1-24 : 15

10.2. Lindsaea lancea (L.) Bedd., Suppl. Ferns Brit. India 6: 292. 1876 . Fig. 4g

Plants terrestrial. Stem short-creeping, with lanceolate scales, 0.9–1.1 mm long, pale brown to dark brown. Fronds 7.6–35.5 cm long, monomorphic, 1 or 2-pinnate, erect; petiole 3.2–21.8 cm long, dark-brown only at the base, paleaceous distally, quadrangular, not winged, glabrous, with scales similar to those on the stem only at the base; rachis paleaceous to brown, quadrangular, glabrous; laminae 6.6–20.8 × 2.2–15.8 cm, triangular; pinnae 11.4–16.2 × 2.8–3.3 cm, 1-pinnate, 2–4 pairs, up to 12 pairs in 1-pinnate, terminal pinnae conform, usually larger than the lateral pinnae; pinnules 1.2–1.5 × 0.6–0.8 cm, sub-trapeziform, chartaceous, glabrous on both sides, margin entire, apex rounded; veins free. Sori linear along the acroscopic margin of the pinnules; indusia linear.

Examined material: MARANHÃO: Alto ParnaÍba , PNNRP, Cachoeira do Sussuapara , 10°09’56’’S, 45°55’38’’W, 425 m, 21.IV.2022, P. H. C. Aguiar et al. 24 ( CCAA); P. H. C. Aguiar et al. 28 ( CCAA, UB); 15.XII.2022, P. H. Castro-Aguiar et al. 162 ( CCAA); P. H. Castro-Aguiar et al. 167 ( CCAA). PIAUÍ: Barreiras do PiauÍ, PNNRP, Cachoeira do Pintado , 10°11’26’’S, 45°51’08’’W, 436 m, 13.XII.2022, P. H. Castro-Aguiar et al. 70 ( CCAA); Cachoeira do Urubu , 10°11’45’’S, 45°47’48’’W, 470 m, 14.XII.2022, P. H. Castro-Aguiar et al. 98 ( CCAA); P. H. Castro-Aguiar et al. 101 ( CCAA, UB); Cachoeira Várzea Grande, 10°12’11’’S, 45°47’58’’W, 474 m, 14.XII.2022, P. H. Castro-Aguiar et al. 110 ( CCAA) .

Lindsaea lancea has a Neotropical distribution, occurring from Mexico to South America and in the Caribbean region ( Smith & Kessler 2017b; Rojas-Alvarado et al. 2023). In Brazil, it is recorded for the Amazon, Caatinga, Cerrado , Atlantic Rainforest, and Pantanal biomes ( Pena et al. 2023). In the study area, it was recorded growing in gallery forest, humid arenitic cliffs, and on rocks surrounding waterfalls. Lindsaea lancea is characterized by the basally dark brown, distally paleaceous petioles. The fronds are 1–2-pinnate, with pinnae or pinnules c. 1.6 to 2 x longer than wide, slightly narrower towards the apex, sub-trapeziform, with the acroscopic side rounded and basiscopic side angular.

Figures

Figure 4 – a.Elaphoglossum scalpellum – habit.b-c.Dicranopteris flexuosa – b. habit; c. sori on the abaxial surface.d.Trichomanes pilosum – habit. e. Trichomanes pinnatum – habit. f. Lindsaea divaricata – habit. g. Lindsaea lancea – habit. h-i. Metaxya parkeri – h. babit; i. sori on the abaxial surface. (a. P.H. Castro-Aguiar et al. 172; b-c. P.H. Castro-Aguiar et al. 67; d. P.H. Castro-Aguiar et al. 238; e. P.H. Castro-Aguiar et al. 173; f. P.H.C. Aguiar et al. 8; g. P.H.C. Aguiar et al. 28; h-i. P.H. Castro-Aguiar et al. 165).