are morphologically standardized and have little significant differences in numbers of neck cells and length (Stokey & Atkinson, 1952; Nayar & Kazmi, 1964; Nayar & Kaur, 1969, 1971).
Perigonia outnumbered perichaetia in forests of 15-30 years-since-harvest, as did antheridia compared to archegonia
, thus a male bias occurred.
a large number of archegonia
(200+), and the male gametophyte produces
In Douglas-fir, there are four to six archegonia
per ovule, but an average of less than two of these are fertilized.
sprucei with the appearance of archegonia
, a fact that represent an uncommon pattern in the gametangial development.
to 100 or more archegonia
per megametophtye, though only a few are
This species is considered apogamic because, in vitro, it does not form archegonia
and the sporophytes developed have an apogamic origin.