Sorus of Asplenium trichomanes (maidenhair spleenwort), a small fern by Gerd A. Günther

Fern sori - reproductive nodules

Sorus by BlueRidgeKitties, via Flickr

Egreltiotu

Sorus from a Polypodium fern | par andre de kesel

Sphagnum Moss, Klippan nature reserve, Sweden. Photo by Josefine Stenudd.

Hornworts, ANTHOCEROS PUNCTATUS

Reveal the tiny pores plants use for gas exchange.

ferns 9 fern spore closeup internet

Field Horsetail (equisetum arvense) by Fred

Pollen may get up our noses in springtime but, viewed under the microscope, a pollen grain is a thing of beauty. These are microscope images of daisy pollen (family Asteraceae). Daisies are mainly insect pollinated as suggested by the pollen grains’ spiky shape. Spikes help pollen stick to insects’ bodies. Image credit: Australasian Pollen and Spore Atlas.

The sporangium on the leaves of "Bird Nest fern" (Asplenium nidus) [OC] [2262x3600]

Phytoplankton

Henri Koskinen | Reflected light technicue