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Phaeoceros carolinianus
Also called Carolina Hornwort
Phaeoceros carolinianus is a species of hornwort—a group of simple, non-vascular plants—that is found worldwide in damp, shaded areas. It forms flat, dark green, rosette-shaped patches measuring 10–20 mm in diameter on bare soil and rock surfaces. The plant is characterised by its horn-like spore capsules, which grow 40–60 mm tall, and for producing both male and female reproductive structures on the same plant (a monoicous condition). These features, along with its unique spore structure, distinguish it from closely related species like P. laevis.
First described by the French botanist André Michaux in 1803 from specimens collected in the Carolinas, Phaeoceros carolinianus has a complex taxonomic history and was later assigned to the genus Phaeoceros by Johannes Max Proskauer in 1951.
Phaeoceros carolinianus has a subcosmopolitan distribution, spanning temperate and tropical regions globally. In Europe, it is found from the Mediterranean to northern regions, in Asia it occurs across temperate and tropical areas, and in North America it ranges from Canada to Mexico and the Antilles. In the Southern Hemisphere, it has been documented in Australia, New Zealand, various parts of Africa, and South America including Colombia, Peru, Brazil, Chile, Bolivia, and Argentina.
Text excerpted from the Wikipedia article Phaeoceros carolinianus by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
