Note Key features of the various tissues. I can think of one that involves climate. Tease open some Sporangia and examine spores with your compound microscopes. Observe Demo of spores Stained with Sudan . Selaginella Selaginella is usually bilaterally flattened and has small dorsal leaves and large ventral leaves.
Some species are erect, however.
They always have Cones and are Heterosporous . They branch dichotomously and are usually Anisotomous . Roots originate from the stems and are usually found at branch points. Roots also branch dichotomously . It is usually found in dark wet areas and is not extremely abundant so don't pick specimens unless you really need one.