-
microphylls or megaphylls) bear
either megasporangia and thus are
called megasporophylls, or
microsporangia and are
called microsporophylls. The
overlap of...
- sporangia-bearing
leaves are
distinguished as
either microsporophylls or
megasporophylls. In seed plants,
sporangia are
typically located within strobili or...
-
phylogenetically derived from ovule-bearing
leaves or leaf
homologues (
megasporophylls),
which evolved to form a
closed structure containing the ovules. This...
- on
female plants, but
rather a
group of leaf-like
structures called megasporophylls each with
seeds on the
lower margins, and
pollen cones or strobilus...
- leaves).
Zamia sporophylls are born in
vertical rows in cones, and the
megasporophyll apices are
faceted or flattened, not spinose. The
fleshy seeds are subglobular...
-
females in the
cycad genus Cycas,
which form a
loose structure called megasporophylls instead of cones. As with all
heterosporous plants, the gametophytes...
-
produced on
separate plants). The
lateral organs of seed
strobili are
megasporophylls (modified leaves) that bear two to
several marginal ovules. Pollen...
-
heterosporous plant,
giving rise to the
female gametophyte.
Compare microspore.
megasporophyll in
hetersoporous plants, a
modified leaf
bearing one or more megasporangia...
- that is made up of many
overlapping scales (sporophylls, and thus
megasporophylls), each
protecting two ovules, each of
which consists of a megasporangium...
- spines. The
sporophylls are not in
vertical rows in cones, and the
megasporophyll apices are
broadly flattened, upturned, and overlapping.
Species in...
