-
always haploid.
Vascular plants are
either homosporous (or isosporous) or heterosporous.
Plants that are
homosporous produce spores of the same size and type...
-
Ceratopteris is the only
genus among homosporous ferns that is
exclusively aquatic. It is pan-tropical and
classified in the
Parkerioideae subfamily of...
-
during development or
later in life. In the fern
Ceratopteris and
other homosporous fern species, the
default **** is hermaphrodite, but
individuals which...
-
clubmosses and many ferns, that
produce only one type of
spore are said to be
homosporous. They have
exosporic gametophytes — that is, the
gametophyte is free-living...
- true trees.
Strong monopodial growth is exhibited.
Aneurophytales was
homosporous,
while the
remaining groups were heterosporous.
Progymnosperms are a...
- Lycopodiales,
Isoetales and Selaginellales. Club-mosses (Lycopodiales) are
homosporous, but the
genera Selaginella (spikemosses) and
Isoetes (quillworts) are...
-
classification artificially split the ferns,
Christian Luerssen subdivided the
homosporous ferns only into
Eusporangiatae and
Leptosporangiatae in 1884–9. The latter...
- as well as many
lycophytes and most ferns,[clarification needed] are
homosporous (only one kind of
spore is produced). Some lycophytes, such as the Selaginellaceae...
-
photosynthetic and with
whorls of branches.: 12–15
Horsetails are
mostly homosporous,
though in the
field horsetail,
smaller spores give rise to male prothalli...
- spore-cases (sporangia)
contain spores of one kind only, (isosporous,
homosporous), and are
borne on the
upper surface of the leaf
blade of specialized...
