La structure fine de l'exospore et de la perispore
des filicinees II.
triphylla were trilete, non-chlorophyllous, amber in colour, with slightly rugose perispore
, and nearly rounded in shape, with little variation in size, 32.
The perispore was smooth, with small papillae, or reticulate.
Taxa Size of spore and Germination Filamentous perispore surface in days fase (days) Blechnum 37(41)49 x 24(27)31 6-10 2-5-cells- appendiculatum [micro]m [+ or -] long, cells 2, slightly cylindrical reticulated (14-20) perispore with small granules B.
Perispore morphology and the taxonomy of the Australian Aspleniaceae.
A multivariate morphological-anatomical analysis of the perispore in Aspleniaceae (Pteridophyta).
could be divided into three groups by their perispore
Sporoderm is 4 [micro]m thick, formed by perispore
the middle and outer strata of the perispore
or elements on the outer
1991) suggest that the perispore
is derived from the tapetum.
of meio/microspore: 0 = absent; 1 = thin, conforming to contours of exine; 2 = thick, forming contours of spore wall.
The plasmodium is enclosed by a membrane (the perispore
membrane; Tiwari & Gunning, 1986b) surrounding the tetrads or young free microspores as shown in Tradescantia, Anigozanthos, and Hypaxis [ILLUSTRATION FOR FIGURES 8, 15, 59 OMITTED].