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Morphology and ultrastructure of Sphaeropteris spores (Cyatheaceae) from the Neotropics
(Elsevier Science, 2018-08)
Spores of species of Sphaeropteris genus from America were studied with TEM and SEM. Six species were quoted as growing in America (cf. Tryon, 1971; Windisch, 1977): Sphaeropteris brunei (Christ) Tryon, Sphaeropteris ...
Substructural components in the sporoderm of the Family Cyatheaceae
(American Association of Stratigraphic Palynologists Foundation, 2015-05-07)
The ultrastructure of the sporoderm of three genera of the Family Cyatheaceae was studied in detail, with the aim to elucidate its constituent elements. While the perispore of Alsophila and Sphaeropteris is thick and ...