- In botany,
apomixis is a****ual
development of seed or
embryo without fertilization. However,
other definitions include replacement of the seed by a plantlet...
- tetraploid. The
diploid reproduces ****ually,
while the
tetraploid is
normally apogamous. It is now
known that the
tetraploid form of the
species is one of the...
-
Archegonia do not form;
antheridia develop and
sometimes release sperm. The
apogamous sporophyte forms in the
apical notch of the gametophyte. Argyrochosma...
- is a rock plant,
needing a
calcareous substrate. P.
atropurpurea is an
apogamous autotriploid, with 3n=87 (actual base number, n=29), and is one of the...
-
plant are
located on
underside of the leaves. This
species is
normally apogamous, with a
chromosome count of n=90 (triploid; "3n"=90).[citation needed]...
-
limestone or
other calcium-rich
rocks and soils.
Myriopteris windhamii is an
apogamous (a****ual)
triploid of
unknown parentage.
NatureServe (November 1, 2024)...
- cheilanthoids, they are
ferns of dry habitats,
reproducing both ****ually and
apogamously. Many
species have
leaves divided into a
large number of small, bead-like...
- substrates, at 500 to 2400
meters in elevation.
Myriopteris yavapensis is an
apogamous (a****ual,
producing spores without fertilization) tetraploid, apparently...
- and sterile,
there is some
evidence that it can
occasionally reproduce apogamously.
Asplenium × trudellii is a
small fern, with
evergreen fronds growing...
- "hybridization
between a ****ual
tetraploid providing a
diploid egg and an
apogamous diploid providing a
diploid sperm." This meaning, the fern
itself is considered...
