Strobilus

The single extant genus of Equisetophyta, Equisetum, produces strobili in which the lateral organs are sporangiophores.Developmental evidence and comparison with fossil members of the group show that the sporangiophores are reduced stems, rather than leaves.The lateral organs of seed strobili are megasporophylls (modified leaves) that bear two to several marginal ovules.The single living member of the Ginkgophyta, Ginkgo biloba produces pollen strobili, but the ovules are typically borne in pairs at the end of a stem, not in a strobilus.Pollen strobili of Pinophyta are similar to those of cycads (although much smaller) and Ginkgoes in that they are composed of microsporophylls with microsporangia on the abaxial surface.
cestodessporangiadecussatemodified stemssporophyllssporangiophoresLycopodiophytaLycopodiopsidaIsoetopsidamicrophyllsDiphasiastrumLycopodiumSelaginellaEquisetophytaEquisetumovulespollenCycadophytaDioon eduleCycas circinalisCycas revolutaGinkgophytaGinkgo bilobaConifer conePinophytaGnetophytaEphedraGnetumWelwitschiaEphedra intermediaflowerflowering plantsStamensmicrosporangiaanthercarpelsmegasporangiaMagnoliainflorescencescatkinsCasuarinaconvergencedispersalHebrew