Euphorbia Leuconeura (Madagascar Jewel Plant)-How to Grow Care

Could you please tell me what this plant is?
It is a picture of a plant that I got from a lady from California that has since passed away. It looks tropical and also has a cactus look. 1 inch square stalk, but no spikes or spines anywhere. a small round pod appears and spits small black seeds everywhere. I would appreciate any help you could give to help id this plant Thanks Randy

Why Dracaena Leaves Turn Brown

Hi Judy. I believe I have a Dracaena Carmen (although I once saw it referred to as a Dracaena Art Carmen) that is showing signs of distress (see photo; the “healthy” leaves are firm, dark green with a yellow stripe along each edge). Any idea what I’m doing wrong and how to remedy? I don’t know if it matters, but I recently moved from an almost 100% fluorescent office light interior office to an office with a south facing window that lets in plenty of indirect sunlight and a few hours of direct sunlight. Any help or advice would be greatly appreciated!