leptosporangiate


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Related to leptosporangiate: eusporangiate
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Antonyms for leptosporangiate

(of ferns) having each sporangium formed from a single epidermal cell

References in periodicals archive ?
The development and structure of the gametophytes show some similar characteristics between the sister group Acrostichum and Ceratopteris: 1) Spore germination is of the Vittaria-type; 2) Prothallial developments is of the Ceratopteris-type; 3) Young prothalli are markedly lopsided; 4) Gametangia are the common leptosporangiate type.
Fern phylogeny inferred from 400 leptosporangiate species and three plastid genes.
Phylogeny and evolution of ferns monilophytes with a focus on the early leptosporangiate divergences.
Antheridia were typical of leptosporangiates; when mature, they produced and released sperm cells (Fig.
This is one of the most common patterns of germination within leptosporangiates, and it has been cited as usual in the Pteridaceae (Nayar & Kaur 1969, 1971).
The remaining living ferns consist of heterosporous leptosporangiate genera that are either amphibious (Marsileales) or floating aquatics (Salviniales; Gifford & Foster, 1989).
These include 13 extant homosporous filicaleans, 17 extinct homosporous and heterosporous ferns from Paleozoic strata, five extant and one extinct heterosporous leptosporangiate ferns, two extant marattiaceous ferns, two extant ophioglossaceous ferns, one extant and two extinct equisetophytes, both extant homosporous psilotophytes (i.e., Psilotum and Tmesipteris), one extinct heterosporous progymnosperm, three extinct and one extant seed plants, and the extinct homosporous trimerophyte Psilophyton crenulatum (Appendix 1).
The classical apical cell concept thus is broadly applicable to the shoot apical meristems of leptosporangiate ferns and Osmunda.
The structure and development of haustorial placentas in leptosporangiate ferns provide a clear-cut distinction between euphyllophytes and lycophytes.
Dicranopteris (Gleicheniaceae) and vessel patterns in leptosporangiate ferns.
The gametangia are typical of the leptosporangiate ferns, sporophytes after six and a half months in culture did not appeared.
Gametangia are of the common type for the leptosporangiate advanced ferns.