norstogii show a light brown to ochre tomentum on the megasporophyll
lobule near the horns, whereas C.
Ovulate strobili one or two per apex, erect, cylindrical, beige-yellow tomentose when juvenile, at maturity turning beige-tomentose to glabrous green, 10-30 x 7-11.4 cm, sterile apex obtuse or pungent, 1-2 cm long, strobilus axis glabrous; peduncles 2-5 x 1.5-3 cm, beige-yellow to grey-brown tomentose; megasporophylls
arranged in 5-8 orthostichies of 3-9 sporophylls each, megasporophyll
pedicels 2.5-3.5 cm long, glabrous, bullae with hexagonal to oblong-hexagonal distal face 2.4-3 x 5-5.2 cm and 1-1.4 cm thick, terminal facet broad, slightly protruding, and indented.
On another occasion we observed termites excavating galleries in the megasporophyll
and seed sarcotesta tissues of a female C.
moorei plants produce seeds on a large strobilus (megasporophyll
) which typically contain 300-360 seeds (Jones 1993:44; Low 1991:138; Rolf Kyburz pers.com; pets.
Other, younger, species of Cordianthus exhibited reduction from the above condition in that the telome system, composed of mesomes and telomes (termed by Florin a "megasporophyll
") was much shortened, unbranched, and bore but one ovule at the apex.
microsporophylls, pectinate megasporophyll
apices, glabrous ovules, and
with a proximal stalked portion bearing 2-10
Isoetes is heterosporous, with each leaf a potential microsporophyll or megasporophyll
. There are scattered reports in the literature of the odd sporangium containing both microspores and megaspores, but this is rare and apparently insignificant.
The Taxaceae aril is the fleshy part of the megasporophyll
and the apex of the axillary shoot (Chamberlain, 1935; Coulter & Chamberlain, 1917; Florin, 1954; Wilde, 1944).
In Encephalartos and Stangeria, male and female cones (referred to as microsrobili and megastrobili, respectively) typically consist of a central axis to which numerous tightly-packed cone scales (termed microsporophylls in males and megasporophylls
in females) are attached (Fig.
leaflike, loosely arranged, multiovulate megasporophylls
, and it is
exposed to light entering between megasporophylls
, from April to August.