1) Monogenesis 2) Sporulation 
(from the article `fern`) Most ferns are homosporous, each plant having spores of one shape and size, usually 30 to 50 micrometres in length or diameter, although some reach ... A homosporous life history occurs in nearly all bryophytes and in most pteridophytes. It is characterized by morphologically identical spores that ... As pla...
[n] - the development of a single kind of asexual spores
homosporous, homospory Having only one kind of spore; isosporous.
the production of a single kind of spore, neither microspore nor megaspore.