The sorus is of continuous type. It is protected by the upper indusial flap that is formed by the margins of the pinnae (Fig. 31.7). The receptacle is intramarginal in origin. The lower or the true indusium is absent. The sporangia are unmixed and development of s...
As you may know, Matt and I have been the series editors for theBest American Comics(Houghton Mifflin Harcourt) for the past six years. That means that, every year, we tried to get our hands onevery comicpublished by a North American cartoonist (which is the USA, Canada, and Mexico), ...