- In botany,
apomixis is a****ual
development of seed or
embryo without fertilization. However,
other definitions include replacement of the seed by a plantlet...
- 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...
- and sterile,
there is some
evidence that it can
occasionally reproduce apogamously.
Asplenium × trudellii is a
small fern, with
evergreen fronds growing...
- 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...
-
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]...
- 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...
-
Archegonia do not form;
antheridia develop and
sometimes release sperm. The
apogamous sporophyte forms in the
apical notch of the gametophyte. Argyrochosma...
-
limestone or
other calcium-rich
rocks and soils.
Myriopteris windhamii is an
apogamous (a****ual)
triploid of
unknown parentage.
NatureServe (November 1, 2024)...
- York: Springer-Verlag. Tryon, A.F. (1968). "Comparisons of ****ual and
apogamous races in the fern
genus Pellaea". Rhodora. 70: 1–24. Tryon, A.F. (1972)...
- The
triploid sporophyte has a
chromosome number of 90.
Reproduction is
apogamous:
triploid spores are
formed by mitosis,
rather than meiosis, and grow...
