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The gametophyte of Botrychium virginianum

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Published by s.n. in [Toronto? .
Written in English


  • Plants -- Reproduction.,
  • Plant embryology,
  • Plantes -- Reproduction.,
  • Plantes -- Embryologie.

Book details:

Edition Notes

Statementby Edward C. Jeffrey.
SeriesCIHM/ICMH Microfiche series = CIHM/ICMH collection de microfiches -- no. 09986, CIHM/ICMH microfiche series -- no. 09986
ContributionsCanadian Institute.
The Physical Object
Pagination1 microfiche (28 fr.)
Number of Pages28
ID Numbers
Open LibraryOL23408522M
ISBN 10066509986X

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Botrychium is a genus of ferns, seedless vascular plants in the family Ophioglossaceae. Botrychium species are known as are small, with fleshy roots, and reproduce by spores shed into the air. One part of the leaf, the trophophore, is sterile and fernlike; the other, the sporophore, is fertile and carries the clusters of sporangia or spore : Polypodiopsida. Winther and Friedman (a) showed that these strains were capable of forming mycorrhizas simultaneously with the achlorophyllous gametophyte and the leafy sporophyte generations of both Botrychium species, indicating a potential for the direct supply of assimilates from the autotrophic to the mycoheterotrophic stages of the life cycle. One. Sceptridium dissectum is a common fern (or fern-ally) in the family Ophioglossaceae, occurring in eastern North America. Like other plants in this group, it normally only sends up one frond per year. It has long been the subject of confusion because the frond presents in one of two forms, either the normal form (forma obliquum) that resembles other plants in the genus, or the skeletonized form Clade: Tracheophytes. Referring to plants in which a single type of spore develops into a bisexual gametophyte having both male and female sex organs. Heterosporous A term referring to a plant species that has two kinds of spores: microspores that develop into male gametophytes and megaspores that .

the gametophyte. Nishida () described the gametophyte of Botrychium virginianum found in Japan and its endogenous fungus. Jeffery made the original morphological description in of this gametophyte which included observations about the fungus. He suggested that it was an intermediate between Pythium and Completoria. Botrychium virginianum‎ (2 C, 1 P, 30 F) Media in category "Botrychium" The following 7 files are in this category, out of 7 total. Botrychium angustisegmentum 1 ().jpg × ; 15 KB. Sceptridium obliquum gametophyte & young sporophyte xpng × 1,; MB. オオハナワラビ(Botrychium japonicum. Preview this book» What people are Botrychium virginianum the gametophyte of Chemotaxis in paramoecium laws of. Meeting of the affiliated scientific societies Mitosis and amitosis characteristics of. Journal of Applied Microscopy, Volume 1 Full view - Development funded the publication of a small book that addressed the taxonomy and and Botrypus virginianus (Botrychium virginianum) are separated at the genus level as being distinct from the other Botrychium species. While the gametophyte is known to require the association of endophytic fungi, the requirements and the distributions.

The rattlesnake fern (Botrychium virginianum (L.) Sw.) is obligately mycotrophic and widely distributed across the northern hemisphere. Three mitochondrial gene regions place this species with.   During the spring of the writer discovered the gametophytes of Botrychium obliquum Muhl., and later announced the fact in a catalogue of the pteridophytes of Minnesota. Since that time both sporophyte and gametophyte of this and other species of Botrychium have been subjected to careful study. The gametophytes of Botrychium virginianum have been found in large numbers, and a few. Appears in books from Page - Columba came into Britain in the ninth year of the reign of Bridius, who was the son of Meilochon, and the powerful king of the Pictish nation, and he converted that nation to the faith of Christ, by his preaching and example. Rattlesnake fern (Botrychium virginianum) (see photo 4), a type of grape fern, is so called either because its sporangia resemble snake rattles or because the plant’s habitat can also be rattlesnake habitat. It is a wide-ranging plant found in most of the United States and other parts of the world, such as Mexico, Australia, parts of Asia and.