collegium musicum. a group of usually amateur musicians, often connected with a university, who meet to study and perform chiefly old or little-known music.
Spores and Sporangium. Ferns differ from flowering plants and trees because they do not produce seeds. Instead, ferns reproduce using spores. The sporangium is the structure responsible for producing and releasing spores. Sporangium form in many different ways, sometimes appearing as brown fruitdots on the undersides of leaves. Others grow as slender stalks up from the plant. When the sporangia burst, the wind carries spores to new ground, where they form reproductive structures that, if fertilized, will grow into a new fern.
Introduction to plants produce spores: Sporogenesis or spore formation is a type of asexual reproduction. Only one parent is involved in asexual reproduction and produces offspring that are identical to the parent. Sexual reproduction involves of two individuals or gametes, one each from opposite type of sex.hey reproduce by the formation of spores. Ferns reproduce by an alternation of generations, the fern itself being the sporophyte, which produces asexual spores. In most ferns the spore-bearing sacs, sporangia are borne in clusters and called sori. They appear as brown dots or streaks on the lower side of the leaves.