What's the Limit, Portulaca grandiflora, and Cordyceps Fungi

The students have done a great job on their "What's the Limit" Lab. They will be analyzing their radishes that have been watered with different amounts, to determine the ideal amount of water for radish height.

Students have also been getting their hands dirty in the greenhouse taking care of their Portulaca grandiflora (common name "moss rose"). We have had some students put up hanging baskets after replanting their Portulaca, and the baskets have added a little variety to greenhouse!

The picture above is of a cordyceps fungi from becbrittain.com. Two questions to ask your students...1) what is this? and 2) what type of relationship is depicted?