And what country can preserve its liberties if their rulers are not warned from time to time that their people preserve the spirit of resistance? Let them take arms. The remedy is to set them right as to facts, pardon and pacify them. What signify a few lives lost in a century or two? The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants.
Sunday, February 23, 2014
Ferns first appeared some 360 million years ago. Being an ancient plant still surviving today, ferns have evolved mechanisms to help in reproduction. Seen here is the sporangia surrounded by paraphyses. The sporangia contain spores that spread and allow the plant to widely distribute, while paraphyses are sterile hairs that protect the sporangia until they open.