Anemia presliana Prantl, Unters. Morph. Gefasskrypt.

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 : 6-8

1.3. Anemia presliana Prantl, Unters. Morph. Gefasskrypt. 2: 104 (1881). Fig. 3c

Plants terrestrial or rupicolous.Stem suberect to erect, with pale brown hairs. Fronds hemidimorphic, erect, sterile fronds 4.5–15.5 cm long, 1-pinnate, fertile fronds 11.5–20 cm long; petiole paleaceous, adaxially sulcate, with dense hairs, petiole of sterile fronds 1.2–3.5 cm long, petiole of fertile fronds 0.6– 4.7(–6) cm long; rachis paleaceous, with dense hairs; sterile laminae 2.8–14 cm long, oblong, chartaceous; sterile pinnae 1–1.8 × 0.6–0.8 cm, 8–12 pairs, oblong, denticulate margins, with hairs on both sides, fertile pinnae inserted immediately below the pair of sterile pinnae, not exceeding the sterile portion of the laminae; veins free.

Examined material: MARANHÃO: Alto ParnaÍba , PNNRP, 10°10’09.8’’S, 45°55’27.4’’W, 21.IV.2023, P. H. C. Aguiar et al. 20 ( CCAA, UB) ; trilha em direção à Cachoeira do Sussuapara , 10°10’10’’S, 45°55’27’’W, 407 m, 15.XII.2023, P. H. Castro-Aguiar et al. 170 ( CCAA, UB). 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.61 ( CCAA); P. H. Castro-Aguiar et al.73 ( CCAA); Cachoeira do Urubu , 10°11’45’’S, 45°47’48’’W, 470 m, 14.XII.2023, P. H. Castro-Aguiar et al. 103 ( CCAA); margem do Rio ParnaÍba , entrando no Maranhão, 09°53’23’’S, 45°51’38’’W, 390 m, 18.III.2023, P. H. Castro-Aguiar et al. 292 ( CCAA, UB). TOCANTINS: São Félix do Tocantins, PNNRP, Cachoeira do Prata , 10°12’22’’S, 46°28’35’’W, 485 m, 15.III.2023, P. H. Castro-Aguiar et al. 249 ( CCAA, UB); P. H. Castro-Aguiar et al. 251 ( CCAA, UB) .

Anemia presliana has a Neotropical distribution, occurring from Mexico to Brazil ( Mickel 2016). In Brazil, it occurs primarily in the Cerrado biome ( Labiak 2023). In the area of study, dense populations were recorded growing on rock formations within the interior of the gallery forest and close to waterfalls.

This species is characterized by the 1-pinnate lamina, with oblong pinnae and fertile fronds approximately the same length as the sterile fronds. One of the species most resembling Anemia presliana is A. pubescens Mickel & Labiak , recently described for the state of Goiás, differing because the latter has long and abundant hairs c. 1mm in length and a thin lamina towards the apex. In comparison, in A. presliana the hairs are shorter than 1 mm, and laminae do not become thinner towards the apex ( Mickel 2016). It resembles Anemia oblongifolia due to the pubescence and format of the pinnae, but it differs with fertile laminae which are the same length as the sterile ones (vs. fertile laminae that surpass the sterile ones).

Figures

Figure 3 – a. Anemia buniifolia – habit. b. Anemia oblongifolia - habit. c. Anemia presliana – habit. d-e. Blechnum areolatum – habit. f.Blechnum asplenioides – habit. g. Telmatoblechnum serrulatum – habit. h. Pteridium esculentum var.harpianum – habit. i. Cyclodium meniscioides – habit. (a. P.H. Castro-Aguiar et al. 280; b. P.H. Castro-Aguiar et al. 290; c. P.H. Castro-Aguiar et al. 170; d. P.H.C. Aguiar et al. 21; e. P.H. Castro-Aguiar et al. 171; f. P.H. Castro-Aguiar et al. 168; g. P.H.C. Aguiar et al. 05; h. P.H. Castro-Aguiar et al. 243; i. P.H. Castro-Aguiar et al. 160).