Authors :
Sruthy Krishnan G; Shiney Jacob
Volume/Issue :
Volume 9 - 2024, Issue 1 - January
Google Scholar :
http://tinyurl.com/mr3hcfcj
Scribd :
http://tinyurl.com/yjb64a32
DOI :
https://doi.org/10.5281/zenodo.10629001
Abstract :
Pityrogramma belonging to the pteridaceae
commonly known as Dixie silverback fern is characterised
as the terrestrial herb with erect, densely scaly rhizome
4×2 cm. scales 2.6×0.2- 0.5mm, brownish, linear, entire.
Fronds 80-100×20-22cm, bipinnate, stipe 40-50cm, dark
pinkish brown, polished, lamina triangular in outline,
pinnae 11×2.5cm, lanceolate, acuminate, in outline,
pinnules 1.5×0.7cm, rhomboid to lanceolate, acute. Lobed
to serrate, pinnae and pinnules progressively reduced to
apex, rachis and costa grooved above, raised below, lower
surface of the pinnules were white crusted. Sori
acrostichoid, sporangial capsule 275-312.5×250 μm,
globose, stalk 250μm long. Spores are 50×50μm triangular
in outline, yellowish with pinkish thickening (Easa 2003).
Prothallus of the fern is an essential part in their life.
Spores with proper care and maintenance, the various
stages of prothallial germination can be noticed.
Keywords :
Pityrogramma calomelanos, Prothallus, Gametophyte, Spore.
Pityrogramma belonging to the pteridaceae
commonly known as Dixie silverback fern is characterised
as the terrestrial herb with erect, densely scaly rhizome
4×2 cm. scales 2.6×0.2- 0.5mm, brownish, linear, entire.
Fronds 80-100×20-22cm, bipinnate, stipe 40-50cm, dark
pinkish brown, polished, lamina triangular in outline,
pinnae 11×2.5cm, lanceolate, acuminate, in outline,
pinnules 1.5×0.7cm, rhomboid to lanceolate, acute. Lobed
to serrate, pinnae and pinnules progressively reduced to
apex, rachis and costa grooved above, raised below, lower
surface of the pinnules were white crusted. Sori
acrostichoid, sporangial capsule 275-312.5×250 μm,
globose, stalk 250μm long. Spores are 50×50μm triangular
in outline, yellowish with pinkish thickening (Easa 2003).
Prothallus of the fern is an essential part in their life.
Spores with proper care and maintenance, the various
stages of prothallial germination can be noticed.
Keywords :
Pityrogramma calomelanos, Prothallus, Gametophyte, Spore.
