Leptosporangium
Origin
- + lepto + sporangium
Full definition of leptosporangium
Noun
leptosporangium
(plural leptosporangia)- (botany) A sporangium formed from a single epidermal cell.
- 2003, Jill Bailey, Filicinophyta (ferns), entry in The Facts on File Dictionary of Botany, page 84,In the Filicales the leptosporangium has a specialized spore dispersal mechanism involving an annulus of cells with thick walls that ejects spores explosively as it dries out.
- 2010, Lily Bora, Principles of Paleobotany, page 256,The characteristic that unites the Filicales as a monophyletic clade is the presence of leptosporangia with an annulus-an area of specialized cells involved in dehiscence....Leptosporangia typically produce only a few spores, and are most commonly homosporous.
- 2011, Michael G. Simpson, Plant Systematics, page 88,Leptosporangia are unique among vascular plants in (1) developing from a single cell, and (2) having a single layer of cells making up the sporangium wall.