Taxon Details: Megalastrum inaequale (Kaulf. ex Link) A.R.Sm. & R.C.Moran
Taxon Profile:
Narratives:
Family:
Dryopteridaceae (Pteridophyta)
Dryopteridaceae (Pteridophyta)
Scientific Name:
Megalastrum inaequale (Kaulf. ex Link) A.R.Sm. & R.C.Moran
Megalastrum inaequale (Kaulf. ex Link) A.R.Sm. & R.C.Moran
Accepted Name:
This name is currently accepted.
This name is currently accepted.
Synonyms:
Polypodium inaequale (Kaulf. ex Link) Kaulf. ex Link
Ctenitis inaequale (Kaulf. ex Link) Copel.
Phegopteris marginans Fée
Phegopteris fulgens Mett. ex Schenck
Polypodium inaequale (Kaulf. ex Link) Kaulf. ex Link
Ctenitis inaequale (Kaulf. ex Link) Copel.
Phegopteris marginans Fée
Phegopteris fulgens Mett. ex Schenck
Description:
by: R.C. Moran, J. Prado, and P.H. Labiak
Lectotype: (designated by Moran et al, 2009): collected in Brazil in 1839 and cultivated in the Berlin Botanical Garden, "Hb Link," collector unknown s.n. (B-200059182; duplicates: BM, P)
Description: Leaves to 3 m long; scales of the petiole bases ca. 2 × 0.15 cm, narrowly lanceolate, denticulate, brown, flat (not twisted), en masse not forming a woolly tuft; laminae 2 m long, to 3-pinnate-pinnatifid at base, 2-pinnate-pinnatifid medially, shiny on both surfaces, paler abaxially; basal pinnae 20-40 cm long, stalks to 1 cm long, inequilateral, pinnules acroscopically slightly reduced toward the pinna bases; pinna rachises abaxially non-glandular, pubescent, scaly, hairs 0.1-0.3 mm long, 1-3-celled, antrorsely substrigose (slightly curved toward apex), scales ca. 2.5 mm long, ovate-lanceolate to (less commonly) linear, light brown, subentire, flat to sub-bullate, adaxially non-glandular, densely pubescent, hairs ca. 0.5 mm long, 3- or 4-celled, strigose; costules abaxially non-glandular, pubescent, hairs ca. 0.1-0.2 mm long, 1-3-celled, scaly, scales like those of pinna rachises but more bullate, adaxially with hairs like those of costae; laminar tissue between veins non-glandular and glabrous on both surfaces; veins visible on both surfaces, non-glandular, abaxially sparsely pubescent and inconspicuously scaly, hairs ca. 0.1 mm long, 1-celled, slightly strigose, scales 0.3-0.4 mm long, uniseriate, appressed, reddish, adaxially sparsely puberulent, hairs 0.2-0.3 mm long, 1-3-celled; lamina margins thick, glabrous to sparsely ciliate, hairs ca. 0.1 mm long, 2-celled, strigose; indusia absent or appearijg absent, if present easily overlooked, fugacious.
Distribution: Endemic to coastal Brazil (Rio de Janeiro and São Paulo); 300-1200 m.
Comments: Megalastrum inaequale is characterized by slightly antrorsely strigose hairs on the costae and costules abaxially and moderately dense, subbullate scales on the axes. The laminae are thick, slightly shiny adaxially, and paler abaxially.
by: R.C. Moran, J. Prado, and P.H. Labiak
Lectotype: (designated by Moran et al, 2009): collected in Brazil in 1839 and cultivated in the Berlin Botanical Garden, "Hb Link," collector unknown s.n. (B-200059182; duplicates: BM, P)
Description: Leaves to 3 m long; scales of the petiole bases ca. 2 × 0.15 cm, narrowly lanceolate, denticulate, brown, flat (not twisted), en masse not forming a woolly tuft; laminae 2 m long, to 3-pinnate-pinnatifid at base, 2-pinnate-pinnatifid medially, shiny on both surfaces, paler abaxially; basal pinnae 20-40 cm long, stalks to 1 cm long, inequilateral, pinnules acroscopically slightly reduced toward the pinna bases; pinna rachises abaxially non-glandular, pubescent, scaly, hairs 0.1-0.3 mm long, 1-3-celled, antrorsely substrigose (slightly curved toward apex), scales ca. 2.5 mm long, ovate-lanceolate to (less commonly) linear, light brown, subentire, flat to sub-bullate, adaxially non-glandular, densely pubescent, hairs ca. 0.5 mm long, 3- or 4-celled, strigose; costules abaxially non-glandular, pubescent, hairs ca. 0.1-0.2 mm long, 1-3-celled, scaly, scales like those of pinna rachises but more bullate, adaxially with hairs like those of costae; laminar tissue between veins non-glandular and glabrous on both surfaces; veins visible on both surfaces, non-glandular, abaxially sparsely pubescent and inconspicuously scaly, hairs ca. 0.1 mm long, 1-celled, slightly strigose, scales 0.3-0.4 mm long, uniseriate, appressed, reddish, adaxially sparsely puberulent, hairs 0.2-0.3 mm long, 1-3-celled; lamina margins thick, glabrous to sparsely ciliate, hairs ca. 0.1 mm long, 2-celled, strigose; indusia absent or appearijg absent, if present easily overlooked, fugacious.
Distribution: Endemic to coastal Brazil (Rio de Janeiro and São Paulo); 300-1200 m.
Comments: Megalastrum inaequale is characterized by slightly antrorsely strigose hairs on the costae and costules abaxially and moderately dense, subbullate scales on the axes. The laminae are thick, slightly shiny adaxially, and paler abaxially.
Related Objects:
• R. Engelmann RE1407, Brazil
• R. Engelmann RE1407, Brazil
• P. H. Labiak E. 4401, Brazil
• P. H. Labiak E. 4401, Brazil
• P. H. Labiak E. 4401, Brazil
• R. Engelmann RE0577, Brazil
• R. Engelmann RE0577, Brazil
• R. Engelmann RE0577, Brazil
• E. Pereira 4133, Brazil
• C. M. Mynssen 1364, Brazil
• C. M. Mynssen 1364, Brazil
• R. Engelmann RE216, Brazil
• R. Engelmann RE260, Brazil
• P. H. Labiak E. 4479, Brazil
• P. H. Labiak E. 4479, Brazil
• P. H. Labiak E. 4479, Brazil
• R. Engelmann RE127, Brazil
• R. Engelmann RE1278, Brazil
• R. Engelmann RE1278, Brazil
• A. C. Brade 8276, Brazil
• P. von Luetzelburg 6911, Brazil
• M. Wacket 21761, Brazil
• A. C. Brade 14017, Brazil
• E. Pereira 353, Brazil
• J. P. P. Carauta 2452, Brazil
• L. B. Smith 2236, Brazil
• R. Engelmann RE1407, Brazil
• P. H. Labiak E. 4401, Brazil
• P. H. Labiak E. 4401, Brazil
• P. H. Labiak E. 4401, Brazil
• R. Engelmann RE0577, Brazil
• R. Engelmann RE0577, Brazil
• R. Engelmann RE0577, Brazil
• E. Pereira 4133, Brazil
• C. M. Mynssen 1364, Brazil
• C. M. Mynssen 1364, Brazil
• R. Engelmann RE216, Brazil
• R. Engelmann RE260, Brazil
• P. H. Labiak E. 4479, Brazil
• P. H. Labiak E. 4479, Brazil
• P. H. Labiak E. 4479, Brazil
• R. Engelmann RE127, Brazil
• R. Engelmann RE1278, Brazil
• R. Engelmann RE1278, Brazil
• A. C. Brade 8276, Brazil
• P. von Luetzelburg 6911, Brazil
• M. Wacket 21761, Brazil
• A. C. Brade 14017, Brazil
• E. Pereira 353, Brazil
• J. P. P. Carauta 2452, Brazil
• L. B. Smith 2236, Brazil