Contemporary Circumscription Compared with A Utah Flora 4th ed.
Bio430
Selaginellaceae
No differences at the family level.
Key Features
Terrestrial plants with crawling stems that may be broad, but seldom rise over a few cm in height. Stems and roots dichotomously branching, with roots produced from a rhizophore originating at branch-points of stems. Leaves microphyllous, bearing ligules, and often dimorphic with some pointing outward, others more or less parallel along stem. Heterosporous, eusporangiate, sporangia always in a strobilus that is often 4-sided (sometimes round).
Selaginella hansenii habitat
Selaginella hansenii - from California; a species capable of drying out completely and returning to life when rains come.
Selaginella hansenii - from California; a species capable of drying out completely and returning to life when rains come.
Selaginella hansenii - from California; a species capable of drying out completely and returning to life when rains come.
Selaginella - Argentina
Selaginella kraussiana - look closely at leaf dimorphism some selaginella species exhibit
Selaginella kraussiana - rhizophores arise from branch points in stem
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