Showers and Thunderstorms Across the East; Rain and Mountain Snow out West. A frontal boundary draped from the Mid-Atlantic to Texas will continue to focus showers with the potential for locally heavy precipitation. A new active storm pattern will bring rain with mountain snow to the west. Pacific storms moving into the Central U.S. this week will bring showers and thunderstorms to the northern states. Read More >. Customize Your Weather.gov.
The prothallium produces both male and female sexual organs. When the female organs become fertilized by the male organs, small fern plants begin to grow. In some ferns it can take as long as six months for the first fronds (leaves) to appear after sexual fertilization.
and established stands of bracken usually contain a mixture of green and dead fronds. As bracken is a true fern it does not produce flowers or seeds, but instead produces spores in bodies called âsoriâ, which occur in a continuous line on the undersides of the fronds. The spores are minute. Lifecycle . Bracken is a perennial fern, but the fronds emerge in the spring and die off in autumn. In colder areas fronds will live for only one year, but they can live for two years where conditions are milder . Figure 1: A bracken fern plant. L. McWhirter