Orange Mycena - Mycena leaiana
Big Laughing Gym - Gymnopilus junonius
Common Rosegill - Volvariella speciosa
"White-stalked" Mycena - Mycena cf. niveipesMushroom Expert. Some key features being the coloration, growth on wood and a bleach-like odor. Most mycenas are small and feature a bell-shaped cap. The spore print is white.
I couldn't find a common name used for this mushroom, so I derived one from the species name. I think using common names for mushrooms makes the topic more inviting for beginners and casual readers. I always include a scientific name for more precise communication
Platterful Mushroom - Megacollybia rodmani
I think the the common name, Platterful Mushroom (from the "National Audubon Society Field Guide to North American Mushrooms", by Gary Lincoff) refers to the mushrooms old scientific name, which was Tricholomopsis platyphylla. The old species name platyphylla probably roughly translates to broad (platy-) gill (-phyll). Broadgill is the common name used in "Mushrooms Demystified".
Speaking of my weak knowledge of Latin and Greek (the basis for many scientific names) - one day recently my 8 year old daughter, Naomi came up to me and said "I'm going to practice my old Greek words". I responded enthusiastically and said she could help me learn. Confusion ensued. Finally I realized she had said "I'm going to wear my green cords".