If you have an urgent package to mail out on Monday, youâre out of luck. In addition to the U.S. Postal Service, both UPS and FedEx will be closed on Labor Day, with only USP Express Critical and FEDEX Custom critical packages set for delivery on Monday.
Horsetail was named for its bristly appearance. The genus name Equisetum is derived from the Latin words equus, meaning horse, and seta, meaning bristle. Other names for horsetail include shave-grass, bottle-brush, and paddock-pipes.
View a high magnification image of the horsetail mature strobilus. In similarity to other ancient vascular plants, such as the spike mosses in the division Lycophyta, the only living remnants of the division Sphenophyta, Equisetum have an asexual reproductive structure, the sphenophyte cone or strobilus.iew a high magnification image of the horsetail mature strobilus. In similarity to other ancient vascular plants, such as the spike mosses in the division Lycophyta, the only living remnants of the division Sphenophyta, Equisetum have an asexual reproductive structure, the sphenophyte cone or strobilus.