1 The sun's rays are strongest during the hours of 10 a.m. to 4 p.m. The sun's rays are also stronger at higher altitudes and lower latitudes (closer to the tropics). Reflection off water, sand, or snow can make the sun's burning rays stronger.  Sun lamps can cause severe sunburn.
Division Marchantiophyta&#151Liverworts, genus Marchantia. : The thallus of the haploid gametophyte (n) grows flat on moist ground, and it is many-cells thick. Pores to permit gas exchange are in the top surface, and there are air spaces within the top zone of the thallus. Water is absorbed throughout the surface.
Description. Plantago major is often called plantain, not to be confused with the banana-like plantain which is delicious fried. Plantago is an Eurasian plant that is naturalized throughout much of the United States and considered to be an annoying weed by most who come across it.lantago lanceolata or narrowleaf plantain is a similar species with longer, thinner leaves and a shorter flower cluster on top of a longer stem. It has similar magical and medicinal properties to broadleaf plantain.