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.
Vegetative Structures. Asexual reproduction, the vegetative reproduction, is forming a new individual plant from a single parent plant. Many parts of plant are used for the asexual reproduction, but a stem is a common organ for the asexual reproduction.unners or stolons is used for natural vegetative reproduction. Strawberries, grasses and some ferns are examples of runners or stolons. The strawberries and the grasses spread stem stems horizontally everywhere.