Dendroceros tubercularis Color photo of an epiphytic hornwort with a swollen midrib and single-celled thallus wings http://www.science.siu.edu/landplants/Anthocerophyta/images/Dendroceros.tub.JPEG

Dendroceros tubercularis Light micrograph showing precocious endosporic spore germination within a capsule. http://www.science.siu.edu/landplants/Anthocerophyta/images/Dendroceros.JPEG

Dendroceros tubercularis SEM of ventral side of thallus showing mucilage clefts (pores) along midrib. http://www.science.siu.edu/landplants/Anthocerophyta/images/Dendroceros.thallus.JPEG

Dendroceros tubercularis SEM of dorsal side of thallus showing antheridial cavities and sunken archegonia. http://www.science.siu.edu/landplants/Anthocerophyta/images/Dendroceros.thallus2.JPEG

Dendroceros tubercularis SEM, enlarged view, showing single antheridium rupturing chamber roof. http://www.science.siu.edu/landplants/Anthocerophyta/images/Dendroceros.antheridium.JPEG

Dendroceros tubercularis SEM, enlarged view, showing two rows of sunken archegonia, each with six rows of neck cells. http://www.science.siu.edu/landplants/Anthocerophyta/images/Dendroceros.archegonium.JPEG

Dendroceros tubercularis TEM of chloroplast showing central pyrenoid (P) composed of irregularly-shaped subunits. http://www.science.siu.edu/landplants/Anthocerophyta/images/Dendroceros.tub.cp.JPEG

Megaceros flagellaris SEM of dehiscing sporophyte showing abundant sporogenous tissue. http://www.science.siu.edu/landplants/Anthocerophyta/images/Megaceros.flag.sporo.JPEG

Megaceros flagellaris SEM showing spores amongst elongated pseudoelaters with spiral thickenings. http://www.science.siu.edu/landplants/Anthocerophyta/images/Megaceros.flag.pseudo.JPEG

Megaceros aenigmaticus TEM of the thallus epidermis showing large plastids with interspersed starch that lack a pyrenoid. http://www.science.siu.edu/landplants/Anthocerophyta/images/Megaceros.aenig.TEM.JPEG

Phaeoceros carolinianus Light micrograph showing unicellular ventral rhizoids. http://www.science.siu.edu/landplants/Anthocerophyta/images/PhaeocerosRhizoids.JPEG